{"id":3820,"date":"2024-01-07T10:44:27","date_gmt":"2024-01-07T02:44:27","guid":{"rendered":"http:\/\/www.ponybai.com\/?p=3820"},"modified":"2023-12-02T10:46:21","modified_gmt":"2023-12-02T02:46:21","slug":"javascript%e4%bb%a3%e7%a0%81","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3820","title":{"rendered":"JavaScript"},"content":{"rendered":"\n<p>\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u5fc5\u987b\u6709\u4e00\u4e2a JavaScript \u6587\u4ef6\u3002Lightning Web \u7ec4\u4ef6\u4e2d\u7684 JavaScript \u6587\u4ef6\u662f ES6 \u6a21\u5757\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"share-javascript-code\">\u5171\u4eab JavaScript \u4ee3\u7801<\/h2>\n\n\n\n<p>\u82e5\u8981\u5728\u7ec4\u4ef6\u4e4b\u95f4\u5171\u4eab\u4ee3\u7801\uff0c\u8bf7\u5728\u670d\u52a1\u7ec4\u4ef6\u4e2d\u521b\u5efa\u4e00\u4e2a ES6 \u6a21\u5757\uff0c\u5e76\u4f7f\u7528\u6807\u51c6 JavaScript \u8bed\u6cd5\u5bfc\u51fa\u8981\u5171\u4eab\u7684\u53d8\u91cf\u6216\u51fd\u6570\u3002<\/p>\n\n\n\n<p>ES6 \u6a21\u5757\u662f\u4e00\u4e2a JavaScript \u6587\u4ef6\uff0c\u5b83\u663e\u5f0f\u5bfc\u51fa\u5176\u4ed6\u6a21\u5757\u53ef\u4ee5\u4f7f\u7528\u7684\u53d8\u91cf\u6216\u51fd\u6570\u3002\u6a21\u5757\u4f7f\u6784\u5efa\u4ee3\u7801\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n\n\n\n<p>LWC \u6709\u4e24\u79cd\u7528\u4e8e\u5171\u4eab\u4ee3\u7801\u7684\u6a21\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa JavaScript \u6587\u4ef6\uff0c\u8fd9\u4e9b\u6587\u4ef6\u5c06\u4ee3\u7801\u5bfc\u51fa\u5230\u4e0e\u5bfc\u5165\u4ee3\u7801\u7684\u7ec4\u4ef6\u76f8\u540c\u7684\u6587\u4ef6\u5939\u4e2d\u3002\u4f7f\u7528\u76f8\u5bf9\u8def\u5f84\u5bfc\u5165\u4ee3\u7801\u3002\u5176\u4ed6\u7ec4\u4ef6\u65e0\u6cd5\u76f4\u63a5\u5bfc\u5165\u6b64\u6587\u4ef6\u3002\u6b64\u65b9\u6cd5\u652f\u6301\u5728\u7ec4\u4ef6\u4e2d\u6784\u5efa\u4ee3\u7801\uff0c\u800c\u4e0d\u662f\u4e0e\u5176\u4ed6\u7ec4\u4ef6\u5171\u4eab\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u7ec4\u4ef6\uff08\u5e93\uff09\uff0c\u8be5\u7ec4\u4ef6\u662f\u4e00\u4e2a\u7ec4\u4ef6\u6587\u4ef6\u5939\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u6216\u591a\u4e2a\u7528\u4e8e\u5bfc\u51fa\u4ee3\u7801\u7684 JavaScript \u6587\u4ef6\u3002\u4e3a\u4e86\u5bfc\u5165\u4ee3\u7801\uff0c\u5176\u4ed6\u7ec4\u4ef6\u4f7f\u7528\u8bed\u6cd5\u3002\u7ec4\u4ef6\u53ea\u80fd\u4ece\u4e3b JavaScript \u6587\u4ef6\u5bfc\u5165\u4ee3\u7801\uff0c\u8be5\u6587\u4ef6\u4e0e\u6587\u4ef6\u5939\u540d\u79f0\u540c\u540d\u3002\u82e5\u8981\u5171\u4eab\u5e93\u4e2d\u8865\u5145 JavaScript \u6587\u4ef6\u4e2d\u7684\u4ee3\u7801\uff0c\u8bf7\u4ece\u8fd9\u4e9b\u6587\u4ef6\u4e2d\u5bfc\u51fa\u4ee3\u7801\uff0c\u7136\u540e\u4ece\u4e3b JavaScript \u6587\u4ef6\u4e2d\u91cd\u65b0\u5bfc\u51fa\u3002\u8bf7\u53c2\u9605<strong>\u5982\u4f55\u5728\u8865\u5145 JavaScript \u6587\u4ef6\u4e2d\u8bbf\u95ee\u5bfc\u51fa<\/strong>\u90e8\u5206\u3002<code>c\/componentName<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u793a\u4f8b\u4f7f\u7528\u7b2c\u4e00\u79cd\u6a21\u5f0f\u3002\u53ea\u80fd\u4ece \u548c \u5bfc\u5165\u4ee3\u7801\u3002<code>myComponent.js<\/code><code>utils.js<\/code><code>myFunction.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lwc\n  \u2514\u2500\u2500\u2500myComponent\n    \u251c\u2500\u2500myComponent.html\n    \u251c\u2500\u2500myComponent.js\n    \u251c\u2500\u2500myComponent.js-meta.xml\n    \u251c\u2500\u2500myFunction.js\n    \u2514\u2500\u2500utils.js<\/code><\/pre>\n\n\n\n<p>\u82e5\u8981\u5bfc\u5165\u4ee3\u7801\uff0c\u8bf7\u4f7f\u7528\u76f8\u5bf9\u8def\u5f84\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myComponent.js\nimport { getAmount, calculateCost } from \".\/utils\";\nimport myFunction from \".\/myFunction\";<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p>JavaScript \u6587\u4ef6\u53ef\u4ee5\u5bfc\u51fa\u547d\u540d\u5bfc\u51fa\u6216\u9ed8\u8ba4\u5bfc\u51fa\u3002\u8981\u5bfc\u5165\u547d\u540d\u5bfc\u51fa\uff0c\u4ee3\u7801\u5c06\u4f7f\u7528 \u4e2d\u7684\u7279\u5b9a\u540d\u79f0\u3002\u82e5\u8981\u5bfc\u5165\u9ed8\u8ba4\u5bfc\u51fa\uff0c\u4ee3\u7801\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u540d\u79f0\u3002\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u4f7f\u7528\u547d\u540d\u5bfc\u51fa\u5e76\u4f7f\u7528\u9ed8\u8ba4\u5bfc\u51fa\u3002<code>{}<\/code><code>utils.js<\/code><code>myFunction.js<\/code><\/p>\n\n\n\n<p>\u6b64\u793a\u4f8b\u662f\u4e00\u4e2a\u670d\u52a1\u7ec4\u4ef6\uff08\u5e93\uff09\u3002\u6587\u4ef6\u5939\u548c\u4e00\u4e2a JavaScript \u6587\u4ef6\u5fc5\u987b\u5177\u6709\u76f8\u540c\u7684\u540d\u79f0\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u540d\u79f0\u4e3a \u3002<code>mortgageUtils<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lwc\n  \u251c\u2500\u2500mortgageUtils\n    \u251c\u2500\u2500mortgageUtils.js\n    \u2514\u2500\u2500mortgageUtils.js-meta.xml\n  \u2514\u2500\u2500\u2500myComponent\n    \u251c\u2500\u2500myComponent.html\n    \u251c\u2500\u2500myComponent.js\n    \u2514\u2500\u2500myComponent.js-meta.xml<\/code><\/pre>\n\n\n\n<p>\u82e5\u8981\u5c06\u4ee3\u7801\u5bfc\u5165\u5230\u5176\u4ed6\u7ec4\u4ef6\u4e2d\uff0c\u8bf7\u4f7f\u7528\u8bed\u6cd5\u3002<code>c\/componentName<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myComponent.js\nimport { getTermOptions, calculateMonthlyPayment } from \"c\/mortgageUtils\";<\/code><\/pre>\n\n\n\n<p>\u91cd\u8981<\/p>\n\n\n\n<p>\u5728\u8bed\u53e5\u4e2d\uff0c\u6307\u5b9a\u8981\u4ece\u4e2d\u5bfc\u5165\u7684\u6587\u4ef6\u5939\uff0c\u800c\u4e0d\u662f\u6587\u4ef6\uff0c\u4e0d\u8981\u6307\u5b9a\u6587\u4ef6\u6269\u5c55\u540d\u3002\u5176\u4ed6\u7ec4\u4ef6\u53ea\u80fd\u4ece\u5e93\u7684\u4e3b JavaScript \u6587\u4ef6\u5bfc\u5165\u4ee3\u7801\uff0c\u8be5\u6587\u4ef6\u4e0e\u6587\u4ef6\u5939\u540c\u540d\u3002\u7ec4\u4ef6\u65e0\u6cd5\u4ece\u5177\u6709\u5176\u4ed6\u540d\u79f0\u7684\u8865\u5145 JavaScript \u6587\u4ef6\u6216\u5d4c\u5957\u6587\u4ef6\u5939\u4e2d\u7684\u6587\u4ef6\u5bfc\u5165\u3002\u82e5\u8981\u5171\u4eab\u6b64\u7c7b\u6587\u4ef6\u4e2d\u7684\u4ee3\u7801\uff0c\u8bf7\u5bfc\u51fa\u5176\u51fd\u6570\u6216\u53d8\u91cf\uff0c\u7136\u540e\u4ece\u4e3b JavaScript \u6587\u4ef6\u4e2d\u518d\u6b21\u5bfc\u51fa\u5b83\u4eec\u3002<code>import<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5bfc\u51fa\u9ed8\u8ba4\u51fd\u6570\u548c\u53d8\u91cf<\/h2>\n\n\n\n<p>ES6 \u6a21\u5757\u53ef\u4ee5\u5bfc\u51fa\u5355\u4e2a\u9ed8\u8ba4\u51fd\u6570\u6216\u53d8\u91cf\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lwc\n  \u2514\u2500\u2500myComponent\n    \u251c\u2500\u2500myComponent.html\n    \u251c\u2500\u2500myComponent.js\n    \u251c\u2500\u2500myComponent.js-meta.xml\n    \u2514\u2500\u2500myFunction.js<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myFunction.js\nexport default function () { \u00b7\u00b7\u00b7 }<\/code><\/pre>\n\n\n\n<p>\u6b64\u8bed\u6cd5\u4e5f\u6709\u6548\u3002<code>export<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myFunction.js\nexport { myFunction as default, \u2026 };<\/code><\/pre>\n\n\n\n<p>\u82e5\u8981\u5f15\u7528\u9ed8\u8ba4\u5bfc\u51fa\uff0c\u5bfc\u5165\u51fd\u6570\u7684\u7ec4\u4ef6\u5fc5\u987b\u5728\u8bed\u53e5\u4e2d\u9009\u62e9\u4e00\u4e2a\u540d\u79f0\u3002\u5b83\u4e0d\u4e00\u5b9a\u662f\u5bfc\u51fa\u7684\u51fd\u6570\u6216 JavaScript \u6587\u4ef6\u7684\u540d\u79f0\uff0c\u8fd9\u53ea\u662f\u4e00\u4e2a\u7ea6\u5b9a\u3002<code>import<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myComponent.js\nimport myFunction from \".\/myFunction\";<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5bfc\u51fa\u547d\u540d\u51fd\u6570\u548c\u53d8\u91cf<\/h2>\n\n\n\n<p>\u4e00\u4e2a ES6 \u6a21\u5757\u53ef\u4ee5\u5bfc\u51fa\u591a\u4e2a\u547d\u540d\u51fd\u6570\u6216\u53d8\u91cf\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ mortgage.js\nconst getTermOptions = () =&gt; {\n  return &#91;\n    { label: \"20 years\", value: 20 },\n    { label: \"25 years\", value: 25 },\n  ];\n};\n\nconst calculateMonthlyPayment = (principal, years, rate) =&gt; {\n  \/\/ Your calculation logic here\n};\n\nexport { getTermOptions, calculateMonthlyPayment };<\/code><\/pre>\n\n\n\n<p>\u5bfc\u5165\u51fd\u6570\u7684\u7ec4\u4ef6\u4f7f\u7528\u5bfc\u51fa\u7684\u540d\u79f0\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myComponent.js\nimport { getTermOptions, calculateMonthlyPayment } from \"c\/mortgage\";<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>lwc\n  \u251c\u2500\u2500mortgage\n    \u251c\u2500\u2500mortgage.js\n    \u2514\u2500\u2500mortgage.js-meta.xml\n  \u2514\u2500\u2500myComponent\n    \u251c\u2500\u2500myComponent.html\n    \u251c\u2500\u2500myComponent.js\n    \u2514\u2500\u2500myComponent.js-meta.xml<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p>\u8bf7\u53c2\u9605\u00a0lwc-recipes\u00a0\u793a\u4f8b\u5b58\u50a8\u5e93\u3002<code>mortgagemiscSharedJavaScript<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">LWC \u7f16\u8bd1\u5668\u5982\u4f55\u89e3\u6790\u7ec4\u4ef6\u5165\u53e3\u70b9<\/h2>\n\n\n\n<p>LWC \u6a21\u5757\u4ec5\u5c06\u5176\u4e00\u4e2a\u6587\u4ef6\u516c\u5f00\u4e3a\u5165\u53e3\u70b9\u3002\u5165\u53e3\u70b9\u53ef\u4ee5\u662f\u5176\u00a0JavaScript\u00a0\u6587\u4ef6\u6216\u00a0CSS \u6587\u4ef6\u3002LWC \u7f16\u8bd1\u5668\u6309\u4ee5\u4e0b\u987a\u5e8f\u89e3\u6790\u6a21\u5757\u7684\u5165\u53e3\u70b9\u3002<code>c\/moduleNamemoduleName<\/code><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5982\u679c\u5b58\u5728\uff0c\u5219\u4e3a\u5165\u53e3\u70b9\u3002<code>moduleName.js<\/code><\/li>\n\n\n\n<li>\u5426\u5219\uff0c\u662f\u5165\u53e3\u70b9\u3002<code>moduleName.css<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u5982\u679c\u4e24\u4e2a\u6587\u4ef6\u90fd\u672a\u627e\u5230\uff0c\u5219\u7f16\u8bd1\u5931\u8d25\u3002<\/p>\n\n\n\n<p>\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u662f\u6a21\u5757\u7684\u5165\u53e3\u70b9\uff1a<code>utils.js<\/code><code>c\/utils<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>utils\n   \u251c\u2500\u2500utils.js\n   \u2514\u2500\u2500other.js<\/code><\/pre>\n\n\n\n<p>\u5c06\u51fd\u6570\u4ece resolves \u5bfc\u5165\u5230 \u3002<code>c\/utils<\/code><code>utils.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ someComponent.js\n\/\/ This import is valid\nimport { getSomething } from \"c\/utils\";<\/code><\/pre>\n\n\n\n<p>\u6240\u6709\u8fd9\u4e9b\u5bfc\u5165\u90fd\u5931\u8d25\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ someComponent.js\n\/\/ These imports are invalid\nimport { getSomething } from \"c\/utils\/utils.js\";\nimport { getSomething } from \"c\/utils\/other.js\";\nimport { getSomething } from \"c\/utils\/utils\";<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u4f55\u8bbf\u95ee\u8865\u5145 JavaScript \u6587\u4ef6\u4e2d\u7684\u5bfc\u51fa<\/h2>\n\n\n\n<p>\u8865\u5145 JavaScript \u6587\u4ef6\u4f7f\u7528\u7684\u6587\u4ef6\u540d\u4e0e\u7ec4\u4ef6\u6216\u6a21\u5757\u540d\u79f0\u4e0d\u540c\u3002\u82e5\u8981\u4ece\u8865\u5145 JavaScript \u6587\u4ef6\u8bbf\u95ee\u5bfc\u51fa\uff0c\u8bf7\u4f7f\u7528\u8bed\u6cd5\u5c06\u5176\u5bfc\u5165\u5e76\u5728\u4e3b JavaScript \u6587\u4ef6\u4e2d\u91cd\u65b0\u5bfc\u51fa\u3002\u6b64\u8bed\u6cd5\u662f \u548c \u7684\u7ec4\u5408\u3002<code>export from<\/code><code>import<\/code><code>export<\/code><\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u8981\u4ece\u8865\u5145\u6587\u4ef6\u5bfc\u51fa\u4ee3\u7801\u3002<code>moreUtils.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lwc\n  \u2514\u2500\u2500\u2500utils\n    \u251c\u2500\u2500utils.js\n    \u2514\u2500\u2500moreUtils.js<\/code><\/pre>\n\n\n\n<p>\u5728 \u4e2d\uff0c\u5bfc\u51fa\u4ee3\u7801\u3002<code>moreUtils.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ moreUtils.js\nconst someFunction = () =&gt; {\n    \/\/ logic\n};\n\nconst someOtherFunction = (arg1 arg2) =&gt; {\n    \/\/ logic\n};\n\nexport{ someFunction, someOtherFunction };<\/code><\/pre>\n\n\n\n<p>\u5728 \u4e2d\uff0c\u6b64\u8bed\u53e5\u5bfc\u51fa\u51fd\u6570\u5e76\u4f7f\u5176\u53ef\u7528\u4e8e\u5176\u4ed6 Lightning Web \u7ec4\u4ef6\u3002\u8fd9\u4e9b\u51fd\u6570\u4e0d\u53ef\u7528\uff0c\u9664\u975e\u60a8\u8fd8\u50cf\u672c\u9875\u7684\u7b2c\u4e00\u4e2a\u793a\u4f8b\u4e00\u6837\u5bfc\u5165\u5b83\u4eec\u3002<code>utils.js<\/code><code>utils.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ utils.js\nexport { someFunction, someOtherFunction } from \".\/moreUtils\";<\/code><\/pre>\n\n\n\n<p>\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528\u901a\u914d\u7b26\u4ece\u8865\u5145\u6a21\u5757\u5bfc\u51fa\u6240\u6709\u8d44\u6e90\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ utils.js\nexport * from \".\/moreUtils\";<\/code><\/pre>\n\n\n\n<p>\u5728\u7ec4\u4ef6\u4e2d\uff0c\u5bfc\u5165\u51fd\u6570\uff0c\u5c31\u50cf\u5b83\u4eec\u4f4d\u4e8e \u4e2d\u4e00\u6837\u3002<code>utils.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ someComponent.js\nimport { someFunction, someOtherFunction } from \"c\/utils\";\n\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"use-third-party-javascript-libraries\">\u4f7f\u7528\u7b2c\u4e09\u65b9 JavaScript \u5e93<\/h2>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p>\u5728\u4f7f\u7528\u7b2c\u4e09\u65b9 JavaScript \u5e93\u4e4b\u524d\uff0c\u6211\u4eec\u5efa\u8bae\u60a8\u5728\u00a0AppExchange\u00a0\u4e2d\u67e5\u627e\u7b26\u5408\u60a8\u8981\u6c42\u7684\u7b2c\u4e09\u65b9\u5e94\u7528\u7a0b\u5e8f\u3002\u6216\u8005\uff0c\u68c0\u67e5\u57fa\u672c\u7ec4\u4ef6\u662f\u5426\u63d0\u4f9b\u6240\u9700\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u5c06\u7b2c\u4e09\u65b9 JavaScript \u5e93\u4e0e Lightning Web \u7ec4\u4ef6\u4e00\u8d77\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u5177\u6709\u4ea4\u4e92\u5f0f\u56fe\u8868\u548c\u56fe\u5f62\u7684\u5e93\u6216\u964d\u4f4e\u4ee3\u7801\u590d\u6742\u6027\u7684\u5e93\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4ece\u7b2c\u4e09\u65b9\u5e93\u7684\u7ad9\u70b9\u4e0b\u8f7d\u5e93\u3002<\/li>\n\n\n\n<li>\u5c06\u5e93\u4f5c\u4e3a\u9759\u6001\u8d44\u6e90\u4e0a\u4f20\u5230\u60a8\u7684 Salesforce \u7ec4\u7ec7\uff0c\u8fd9\u662f Lightning Web \u7ec4\u4ef6\u5185\u5bb9\u5b89\u5168\u7b56\u7565\u7684\u8981\u6c42\u3002<\/li>\n\n\n\n<li>\u5728\u6269\u5c55\u7684 JavaScript \u7c7b\u4e2d\uff1a<code>LightningElement<\/code>\n<ul class=\"wp-block-list\">\n<li>\u6309\u5e93\u7684\u9759\u6001\u8d44\u6e90\u540d\u79f0\u5bfc\u5165\u5e93\u3002<code>import RESOURCE_NAME from \"@salesforce\/resourceUrl\/RESOURCE_NAME\";<\/code>\u4f8b\u5982\uff0c\u5982\u679c\u5c06\u9759\u6001\u8d44\u6e90\u547d\u540d\u4e3a \uff1a<code>myLib<\/code><code>import myLib from \"@salesforce\/resourceUrl\/myLib\";<\/code><\/li>\n\n\n\n<li>\u4ece\u6a21\u5757\u5bfc\u5165\u65b9\u6cd5\u3002<code>platformResourceLoaderimport { loadStyle, loadScript } from \"lightning\/platformResourceLoader\";<\/code>\u8bf7\u53c2\u9605\u00a0<code>lightning\/platformResourceLoader<\/code>\u00a0\u53c2\u8003\u6587\u6863\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u52a0\u8f7d\u5e93\u5e76\u5728\u65b9\u6cd5\u4e2d\u8c03\u7528\u5176\u51fd\u6570\u3002<code>then()<\/code><code>loadScript(this, myLib + \"\/myLib.js\").then(() =&gt; { let result = myLib.myFunction(2, 2); });<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u91cd\u8981<\/p>\n\n\n\n<p>\u5982\u679c\u60a8\u7684\u7ec4\u4ef6\u5728\u672a\u542f\u7528 Lightning Web Security \uff08LWS\uff09 \u7684\u7ec4\u7ec7\u4e2d\u8fd0\u884c\uff0c\u5219\u60a8\u7684\u7ec4\u4ef6\u4f7f\u7528\u7684\u5e93\u5fc5\u987b\u6ee1\u8db3 Lightning Locker \u8981\u6c42\u3002\u8bf7\u53c2\u9605\u786e\u5b9a JavaScript \u5e93\u662f\u5426\u7b26\u5408 Locker \u6807\u51c6\u3002\u5982\u679c\u7ec4\u7ec7\u4f7f\u7528\u7684\u662f Lightning Web Security \uff08LWS\uff09\uff0c\u5219\u5927\u591a\u6570\u7b2c\u4e09\u65b9\u5e93\u65e0\u9700\u66f4\u6539\u5373\u53ef\u6309\u9884\u671f\u5de5\u4f5c\u3002\u4f46\u662f\uff0c\u67d0\u4e9b\u5e93\u9700\u8981\u66f4\u6539\u624d\u80fd\u4e0e LWS \u4e00\u8d77\u4f7f\u7528\u3002\u8bf7\u53c2\u9605\u00a0LWS \u7684\u7b2c\u4e09\u65b9\u5e93\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f7f\u7528 JavaScript \u64cd\u4f5c DOM<\/h2>\n\n\n\n<p>\u4e0d\u5efa\u8bae\u4f7f\u7528 JavaScript \u6765\u64cd\u4f5c DOM\uff0c\u56e0\u4e3a Lightning Web \u7ec4\u4ef6\u5f15\u64ce\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u6267\u884c\u6b64\u64cd\u4f5c\u3002\u4f46\u662f\uff0c\u6709\u4e00\u4e9b\u7b2c\u4e09\u65b9 JavaScript \u5e93\u63a5\u7ba1\u4e86 DOM\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>Salesforce \u4e0d\u63d0\u4f9b\u5bf9\u7b2c\u4e09\u65b9 JavaScript \u5e93\u7684\u652f\u6301\u3002\u6f14\u793a\u5982\u4f55\u4f7f\u7528\u7b2c\u4e09\u65b9 JavaScript \u5e93\u7684\u6587\u6863\u548c\u793a\u4f8b\u5e76\u4e0d\u6784\u6210\u5bf9\u7b2c\u4e09\u65b9 JavaScript \u5e93\u7684\u8ba4\u53ef\u3002\u6211\u4eec\u5efa\u8bae\u60a8\u67e5\u770b\u7b2c\u4e09\u65b9 JavaScript \u5e93\u6587\u6863\uff0c\u4e86\u89e3\u4f7f\u7528\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u8c03\u7528\u64cd\u4f5c DOM\uff0c\u5219\u6837\u5f0f\u4e0d\u4f1a\u5e94\u7528\u4e8e\u8ffd\u52a0\u7684\u5143\u7d20\u3002<code>appendChild()<\/code><\/p>\n\n\n\n<p>\u5728 Lightning Web \u7ec4\u4ef6\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u5e93\u65f6\uff0c\u8bf7\u6dfb\u52a0\u5230\u8981\u4f7f\u7528 JavaScript \u64cd\u4f5c\u7684\u4efb\u4f55 HTML \u5143\u7d20\u4e2d\u3002\u5f53\u5f15\u64ce\u770b\u5230\u8be5\u6307\u4ee4\u65f6\uff0c\u5b83\u4f1a\u4fdd\u7559\u5c01\u88c5\u3002<code>lwc:dom=\"manual\"<\/code><\/p>\n\n\n\n<p>\u5c06\u6307\u4ee4\u6dfb\u52a0\u5230\u7a7a\u7684\u672c\u673a HTML \u5143\u7d20\u4e2d\u3002\u7ec4\u4ef6\u7684\u6240\u6709\u8005\u8c03\u7528\u8be5\u5143\u7d20\u6765\u624b\u52a8\u63d2\u5165 DOM\u3002<code>lwc:dom=\"manual\"<\/code><code>appendChild()<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;template&gt;\n  &lt;div lwc:dom=\"manual\"&gt;&lt;\/div&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p>D3 \u4ee3\u7801\u662f\u00a0lwc-recipes\u00a0\u5b58\u50a8\u5e93\u4e2d\u7684\u7ec4\u4ef6\u3002<code>libsD3<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u793a\u4f8b\uff1aD3 JavaScript \u5e93<\/h2>\n\n\n\n<p>\u6b64\u7ec4\u4ef6\u4f7f\u7528 D3 JavaScript \u5e93\u521b\u5efa\u4ea4\u4e92\u5f0f\u6570\u636e\u53ef\u89c6\u5316\u6548\u679c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" src=\"https:\/\/developer.salesforce.com\/1\/content-asset\/immutable\/s\/17013859660000000\/salesforcedocslwc\/content\/media\/third_party_lib.png\" alt=\"\u663e\u793a\u7531\u7ebf\u8fde\u63a5\u7684\u5f69\u8272\u70b9\u7684\u56fe\u5f62\u7684\u7ec4\u4ef6\u3002\u60a8\u53ef\u4ee5\u5355\u51fb\u5e76\u62d6\u52a8\u70b9\u6765\u66f4\u6539\u56fe\u5f62\u7684\u5f62\u72b6\u3002\" style=\"width:690px;height:auto\"\/><\/figure>\n\n\n\n<p>\u5728\u00a0d3js.com\u00a0\u4e0b\u8f7d D3\u3002\u4f5c\u4e3a\u9759\u6001\u8d44\u6e90\u4e0a\u4f20\u5230\u60a8\u7684 Salesforce \u7ec4\u7ec7\u3002<code>d3.zip<\/code><\/p>\n\n\n\n<p>\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u7ec4\u4ef6\u6765\u5305\u542b\u5730\u56fe\u3002\u5728\u8fd9\u91cc\uff0c\u5bb9\u5668\u662f\u4e00\u4e2a\u7a7a\u7684\u3002<code>lwc\uff1adom=\u201cmanual\u201d<\/code>\u00a0\u6307\u4ee4\u544a\u8bc9 LWC \u5143\u7d20\u4e2d\u7684 DOM \u5df2\u624b\u52a8\u63d2\u5165\u3002<code>&lt;svg>&lt;svg><\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- libsD3.html --&gt;\n&lt;template&gt;\n  &lt;div class=\"slds-m-around_medium\"&gt;\n    &lt;svg class=\"d3\" width={svgWidth} height={svgHeight} lwc:dom=\"manual\"&gt;&lt;\/svg&gt;\n  &lt;\/div&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<p>\u5728\u7ec4\u4ef6\u7684 JavaScript \u7c7b\u4e2d\uff0cimport \u548c from .\u540c\u65f6\u5bfc\u5165\u9759\u6001\u8d44\u6e90\u3002\u8bf7\u6ce8\u610f\uff0c\u8fd9\u662f\u7528\u4e8e\u52a0\u8f7d\u8d44\u6e90\u7684\u9759\u6001\u8d44\u6e90\u5f15\u7528\uff0c\u5e76\u4e14\u662f\u4e0a\u4f20\u5230 Salesforce \u7684\u9759\u6001\u8d44\u6e90\u7684\u540d\u79f0\u3002<code>loadStyle<\/code><code>loadScript<\/code><code>lightning\/platformResourceLoader<\/code><code>d3<\/code><code>D3<\/code><code>d3<\/code><\/p>\n\n\n\n<p>\u82e5\u8981\u521b\u5efa\u56fe\u5f62\uff0c\u8bf7\u5728\u7b2c\u4e00\u6b21\u6e32\u67d3\u65f6\u8c03\u7528 \u548c in\u3002\u4f7f\u7528\u53ef\u786e\u4fdd\u9875\u9762\u5728\u521b\u5efa\u56fe\u5f62\u4e4b\u524d\u52a0\u8f7d\u5e76\u5448\u73b0\u5bb9\u5668\u3002<code>loadStyle<\/code><code>loadScript<\/code><code>renderedCallback()<\/code><code>renderedCallback()<\/code><\/p>\n\n\n\n<p>\u8c03\u7528\u548c\u8fd4\u56de promise\u3002\u7528\u4e8e\u805a\u5408\u7ed3\u679c\uff0c\u5e76\u786e\u4fdd\u5728\u8c03\u7528\u56de\u8c03\u4e4b\u524d\u89e3\u6790\u8fd9\u4e24\u4e2a\u6587\u4ef6\u3002\u53ea\u6709\u5728\u52a0\u8f7d\u5b8c\u6210\u540e\uff0c\u5e76\u4e14\u53ea\u6709\u5728\u6ca1\u6709\u53d1\u751f\u9519\u8bef\u65f6\u624d\u4f1a\u8c03\u7528\u56de\u8c03\u3002\u60a8\u53ef\u4ee5\u9009\u62e9\u63d0\u4f9b\u56de\u8c03\u6765\u5904\u7406\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u53d1\u751f\u7684\u4efb\u4f55\u6f5c\u5728\u9519\u8bef\u3002<code>loadStyle<\/code><code>loadScript<\/code><code>Promise.all()<\/code><code>then()<\/code><code>catch()<\/code><\/p>\n\n\n\n<p>\u8981\u5728 promise \u56de\u8c03\u4e2d\u521d\u59cb\u5316\u56fe\u5f62\uff0c\u8bf7\u8c03\u7528 \uff0c\u5b83\u8fdb\u5165 DOM \u5e76\u83b7\u53d6\u5bf9\u663e\u793a\u56fe\u5f62\u7684\u5bb9\u5668\u7684\u5f15\u7528\uff0c\u8fd9\u91cc\u662f\u4e00\u4e2a\u5143\u7d20\u3002<code>initializeD3()<\/code><code>&lt;svg&gt;<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ libsD3.js\n\/* global d3 *\/\nimport { LightningElement } from \"lwc\";\nimport { ShowToastEvent } from \"lightning\/platformShowToastEvent\";\nimport { loadScript, loadStyle } from \"lightning\/platformResourceLoader\";\nimport D3 from \"@salesforce\/resourceUrl\/d3\";\nimport DATA from \".\/data\";\n\nexport default class LibsD3 extends LightningElement {\n  svgWidth = 400;\n  svgHeight = 400;\n\n  d3Initialized = false;\n\n  renderedCallback() {\n    if (this.d3Initialized) {\n      return;\n    }\n    this.d3Initialized = true;\n\n    Promise.all(&#91;loadScript(this, D3 + \"\/d3.v5.min.js\"), loadStyle(this, D3 + \"\/style.css\")])\n      .then(() =&gt; {\n        this.initializeD3();\n      })\n      .catch((error) =&gt; {\n        this.dispatchEvent(\n          new ShowToastEvent({\n            title: \"Error loading D3\",\n            message: error.message,\n            variant: \"error\",\n          }),\n        );\n      });\n  }\n\n  initializeD3() {\n    \/\/ Example adopted from https:\/\/bl.ocks.org\/mbostock\/2675ff61ea5e063ede2b5d63c08020c7\n    const svg = d3.select(this.template.querySelector(\"svg.d3\"));\n    const width = this.svgWidth;\n    const height = this.svgHeight;\n    const color = d3.scaleOrdinal(d3.schemeDark2);\n\n    const simulation = d3\n      .forceSimulation()\n      .force(\n        \"link\",\n        d3.forceLink().id((d) =&gt; {\n          return d.id;\n        }),\n      )\n      .force(\"charge\", d3.forceManyBody())\n      .force(\"center\", d3.forceCenter(width \/ 2, height \/ 2));\n\n    const link = svg\n      .append(\"g\")\n      .attr(\"class\", \"links\")\n      .selectAll(\"line\")\n      .data(DATA.links)\n      .enter()\n      .append(\"line\")\n      .attr(\"stroke-width\", (d) =&gt; {\n        return Math.sqrt(d.value);\n      });\n\n    const node = svg\n      .append(\"g\")\n      .attr(\"class\", \"nodes\")\n      .selectAll(\"circle\")\n      .data(DATA.nodes)\n      .enter()\n      .append(\"circle\")\n      .attr(\"r\", 5)\n      .attr(\"fill\", (d) =&gt; {\n        return color(d.group);\n      })\n      .call(d3.drag().on(\"start\", dragstarted).on(\"drag\", dragged).on(\"end\", dragended));\n\n    node.append(\"title\").text((d) =&gt; {\n      return d.id;\n    });\n\n    simulation.nodes(DATA.nodes).on(\"tick\", ticked);\n\n    simulation.force(\"link\").links(DATA.links);\n\n    function ticked() {\n      link\n        .attr(\"x1\", (d) =&gt; d.source.x)\n        .attr(\"y1\", (d) =&gt; d.source.y)\n        .attr(\"x2\", (d) =&gt; d.target.x)\n        .attr(\"y2\", (d) =&gt; d.target.y);\n      node.attr(\"cx\", (d) =&gt; d.x).attr(\"cy\", (d) =&gt; d.y);\n    }\n\n    function dragstarted(d) {\n      if (!d3.event.active) {\n        simulation.alphaTarget(0.3).restart();\n      }\n      d.fx = d.x;\n      d.fy = d.y;\n    }\n\n    function dragged(d) {\n      d.fx = d3.event.x;\n      d.fy = d3.event.y;\n    }\n\n    function dragended(d) {\n      if (!d3.event.active) {\n        simulation.alphaTarget(0);\n      }\n      d.fx = null;\n      d.fy = null;\n    }\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5728 Lightning Web \u7ec4\u4ef6\u4e2d\uff0c\u4e0d\u80fd\u7528\u4e8e\u67e5\u8be2 DOM \u5143\u7d20\u3002\u8bf7\u6539\u7528 .\u4f8b\u5982\uff0c\u6b64 D3 \u4ee3\u7801\u793a\u4f8b\u4f7f\u7528 .\u8bf7\u53c2\u9605\u00a0DOM \u8bbf\u95ee\u904f\u5236\u3002<code>documentthis.templatethis.template.querySelector('svg.d3')<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6709\u7528\u7684\u6a21\u5f0f<\/h2>\n\n\n\n<p>\u4e0b\u9762\u662f\u4e00\u4e9b\u7528\u4e8e\u52a0\u8f7d\u4ee3\u7801\u7684\u6709\u7528\u6a21\u5f0f\u3002\u6b64\u4ee3\u7801\u52a0\u8f7d\u4e00\u4e2a\u6ca1\u6709 CSS \u6587\u4ef6\u7684 JavaScript\u5e93\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>loadScript(this, RESOURCE_NAME + \"\/lib.js\").then(() =&gt; {\n  \/* callback *\/\n});<\/code><\/pre>\n\n\n\n<p>\u6b64\u4ee3\u7801\u5e76\u884c\u52a0\u8f7d\u591a\u4e2a JavaScript\u6587\u4ef6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Promise.all(&#91;\n  loadScript(this, RESOURCE_NAME + \"\/lib1.js\"),\n  loadScript(this, RESOURCE_NAME + \"\/lib2.js\"),\n  loadScript(this, RESOURCE_NAME + \"\/lib3.js\"),\n]).then(() =&gt; {\n  \/* callback *\/\n});<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"determine-whether-a-javascript-library-is-locker-compliant\">\u786e\u5b9a JavaScript\u5e93\u662f\u5426\u7b26\u5408\u4fdd\u9669\u7bb1<\/h2>\n\n\n\n<p>\u4f7f\u7528\u672c\u6307\u5357\u53ef\u786e\u5b9a\u7b2c\u4e09\u65b9 JavaScript\u5e93\u662f\u5426\u4e0e Lightning Locker \u517c\u5bb9\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u672c\u6307\u5357\u9002\u7528\u4e8e\u7ec4\u7ec7\u4f7f\u7528 Lightning Locker \u7684\u60c5\u51b5\u3002\u5982\u679c\u7ec4\u7ec7\u542f\u7528\u4e86\u00a0Lightning Web Security\u00a0\uff08LWS\uff09\uff0c\u5219\u5927\u591a\u6570\u7b2c\u4e09\u65b9 JavaScript\u5e93\u65e0\u9700\u66f4\u6539\u5373\u53ef\u6309\u9884\u671f\u5de5\u4f5c\u3002\u4f46\u662f\uff0c\u663e\u5f0f\u8bbe\u7f6e\u7684\u5e93\u9700\u8981\u66f4\u6539\u624d\u80fd\u4f7f\u7528 LWS\u3002\u8bf7\u53c2\u9605\u00a0LWS \u7684\u7b2c\u4e09\u65b9\u5e93\u6ce8\u610f\u4e8b\u9879\u3002<code>\"use strict\"<\/code><\/p>\n\n\n\n<p>\u7ec4\u4ef6\u4f7f\u7528\u7684\u4efb\u4f55\u5e93\u90fd\u5fc5\u987b\u6ee1\u8db3\u4e0e\u7ec4\u4ef6\u76f8\u540c\u7684 Lightning Locker \u8981\u6c42\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u907f\u514d\u8de8\u547d\u540d\u7a7a\u95f4\u76f4\u63a5\u64cd\u4f5c DOM\u3002\u8bf7\u53c2\u9605\u00a0DOM \u8bbf\u95ee\u904f\u5236\u3002<\/li>\n\n\n\n<li>\u652f\u6301 JavaScriptES5 \u4e25\u683c\u6a21\u5f0f\uff0c\u5982\u00a0JavaScript\u4e25\u683c\u6a21\u5f0f\u5f3a\u5236\u6267\u884c\u4e2d\u6240\u8ff0\u3002<\/li>\n\n\n\n<li>\u907f\u514d\u4f7f\u7528 Lightning Locker \u963b\u6b62\u7684 JavaScriptAPI\uff0c\u5982\u00a0Lightning Locker \u5de5\u5177\u4e2d\u6240\u8ff0\u7684\u00a0Locker API \u67e5\u770b\u5668\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8981\u786e\u5b9a\u7b2c\u4e09\u65b9\u5e93\u662f\u5426\u4e0e Lightning Locker \u517c\u5bb9\uff0c\u6211\u4eec\u5efa\u8bae\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u521b\u5efa\u4e00\u4e2a\u4f7f\u7528\u8be5\u5e93\u7684\u5c0f\u578b\u793a\u4f8b\u5e94\u7528\u3002<\/li>\n\n\n\n<li>\u9a8c\u8bc1\u5e93\u52a0\u8f7d\u65f6\u662f\u5426\u6b63\u786e\uff0c\u4ee5\u53ca\u662f\u5426\u53ef\u4ee5\u8c03\u7528\u57fa\u672c\u529f\u80fd\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u542f\u7528\u4e86 Locker \u7684\u00a0Locker \u63a7\u5236\u53f0\u3002<\/li>\n\n\n\n<li>\u68c0\u67e5\u4ee5\u4e0b\u5e38\u89c1\u8fdd\u89c4\u884c\u4e3a\uff1a\u58f0\u660e\u4e00\u4e2a\u53d8\u4e3a\u5168\u5c40\u53d8\u91cf\u7684\u53d8\u91cf\u4e25\u683c\u6a21\u5f0f\u4e0d\u5141\u8bb8\u53d8\u91cf\u6210\u4e3a\u5168\u5c40\u53d8\u91cf\u3002\u4e3a\u907f\u514d\u8fdd\u53cd\u6b64\u89c4\u5219\uff0c\u8bf7\u5728\u5e93\u4e2d\u663e\u5f0f\u5730\u5c06\u5e93\u5168\u5c40\u9644\u52a0\u5230 \u3002<code>windowwindow.myLib = (function () { return { myFunction: function (a, b) { return a * b; }, }; })();<\/code>CSP \u8fdd\u89c4\u626b\u63cf\u4ee3\u7801\u4ee5\u67e5\u627e \u3001 \u6216 \u6807\u8bb0\u7684\u4efb\u4f55\u7528\u6cd5\u3002<code>eval()new Function()&lt;script><\/code>DOM \u8bbf\u95ee\u51b2\u7a81\u5982\u679c\u5e93\u5c1d\u8bd5\u5bf9 DOM \u8fdb\u884c\u5e7f\u6cdb\u626b\u63cf\uff0c\u800c\u4e0d\u662f\u4ec5\u64cd\u4f5c\u4f20\u9012\u7ed9\u5176 API \u7684\u5143\u7d20\uff0c\u5219\u5b83\u4eec\u5c06\u88ab\u963b\u6b62\u3002\u5982\u679c\u5e93\u64cd\u4f5c DOM\uff0c\u5219\u53ef\u4ee5\u5c06\u8be5\u6307\u4ee4\u6dfb\u52a0\u5230\u672c\u673a HTML \u5143\u7d20\u4ee5\u5141\u8bb8\u5b83\uff0c\u5982\u4f7f\u7528\u7b2c\u4e09\u65b9 JavaScript\u5e93\u4e2d\u6240\u8ff0\u3002<code>lwc:dom=\"manual\"<\/code>\u4f7f\u7528\u975e\u6807\u51c6\u6216\u4e0d\u53d7\u652f\u6301\u7684 DOM API\u8bf7\u53c2\u9605\u5728 Locker API \u67e5\u770b\u5668\u4e2d\u6807\u8bb0\u4e3a\u201c\u652f\u6301\u201d\u548c\u201c\u4e0d\u652f\u6301\u201d\u7684 API\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5982\u679c\u5e93\u4e0d\u5408\u89c4\uff0c\u8bf7\u8981\u6c42\u5e93\u7ef4\u62a4\u4eba\u5458\u66f4\u65b0\u4ee3\u7801\u4ee5\u7b26\u5408 Lightning Locker\uff0c\u6216\u8005\uff0c\u5982\u679c\u9879\u76ee\u662f\u5f00\u6e90\u7684\uff0c\u8bf7\u81ea\u5df1\u8d21\u732e\u66f4\u6539\u3002\u53e6\u4e00\u79cd\u9009\u62e9\u662f\u5206\u53c9\u5b58\u50a8\u5e93\uff0c\u8fdb\u884c\u66f4\u6539\uff0c\u7136\u540e\u6784\u5efa\u81ea\u5df1\u7684\u5e93\u7248\u672c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"lws-compliant-javascript-libraries\">\u7b26\u5408 LWS \u7684 JavaScript\u5e93<\/h2>\n\n\n\n<p>\u542f\u7528 LWS \u540e\uff0c\u5927\u591a\u6570\u7b2c\u4e09\u65b9\u5e93\u90fd\u4f1a\u6309\u9884\u671f\u8fd0\u884c\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\uff0c\u67d0\u4e9b\u5e93\u9700\u8981\u7a0d\u4f5c\u66f4\u6539\u3002\u8bf7\u53c2\u9605\u00a0LWS \u7684\u7b2c\u4e09\u65b9\u5e93\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"call-apis-from-javascript\">\u4ece JavaScript\u8c03\u7528 API<\/h2>\n\n\n\n<p>\u4ece Lightning Web \u7ec4\u4ef6\u8c03\u7528 Salesforce API \u548c\u7b2c\u4e09\u65b9 API\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u60a8\u65e0\u6cd5\u4ece JavaScript\u4ee3\u7801\u5efa\u7acb WebSocket \u8fde\u63a5\u6216\u8c03\u7528\u7b2c\u4e09\u65b9 API\u3002\u4e3a\u6b64\uff0c\u8bf7\u5c06\u8fdc\u7a0b\u7ad9\u70b9\u6dfb\u52a0\u4e3a\u53d7\u4fe1\u4efb\u7684 URL\uff08\u4ee5\u524d\u79f0\u4e3a CSP \u53d7\u4fe1\u4efb\u7684\u7ad9\u70b9\uff09\u3002<\/p>\n\n\n\n<p>Lightning \u7ec4\u4ef6\u6846\u67b6\u4f7f\u7528\u5185\u5bb9\u5b89\u5168\u7b56\u7565 \uff08CSP\uff09\uff08\u4e00\u79cd W3C \u6807\u51c6\uff09\u6765\u63a7\u5236\u53ef\u5728\u9875\u9762\u4e0a\u52a0\u8f7d\u7684\u5185\u5bb9\u6e90\u3002\u9ed8\u8ba4 CSP \u7b56\u7565\u4e0d\u5141\u8bb8\u4ece JavaScript\u4ee3\u7801\u8fdb\u884c API \u8c03\u7528\u3002\u901a\u8fc7\u6dfb\u52a0\u53d7\u4fe1\u4efb\u7684 URL \u6765\u66f4\u6539\u7b56\u7565\u548c CSP \u6807\u5934\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Salesforce API \u63a5\u53e3<\/h2>\n\n\n\n<p>\u4f7f\u7528\u00a0Lightning \u6570\u636e\u670d\u52a1 \uff08LDS\uff09\u00a0\u5904\u7406 Salesforce \u8bb0\u5f55\u7684\u6570\u636e\u548c\u5143\u6570\u636e\u3002Lightning Data Service \u5efa\u7acb\u5728\u516c\u5171\u7528\u6237\u754c\u9762 API \u4e4b\u4e0a\uff0c\u4f46\u5b83\u4ec5\u652f\u6301 API \u7684\u4e00\u4e2a\u5b50\u96c6\u3002\u8be5\u5b50\u96c6\u6db5\u76d6\u4e86\u8bb8\u591a\u5904\u7406\u6570\u636e\u7684\u5178\u578b\u7528\u4f8b\u3002\u60a8\u65e0\u6cd5\u4ece JavaScript\u4ee3\u7801\u8c03\u7528\u9664 LDS \u4e4b\u5916\u7684 Salesforce API\u3002<\/p>\n\n\n\n<p>\u5982\u679c LDS \u4e0d\u652f\u6301\u60a8\u8981\u4f7f\u7528\u7684\u5bf9\u8c61\uff0c\u6216\u8005\u5982\u679c\u60a8\u60f3\u4f7f\u7528\u5176\u4ed6 Salesforce API\uff0c\u8bf7\u7f16\u5199\u4e00\u4e2a Apex \u7c7b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e09\u65b9 API<\/h2>\n\n\n\n<p>\u8c03\u7528 Salesforce API \u6216\u7b2c\u4e09\u65b9 API \u901a\u5e38\u9700\u8981\u4f7f\u7528 OAuth 2.0 \u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u548c\u6388\u6743\u3002\u51fa\u4e8e\u6f14\u793a\u76ee\u7684\uff0c\u67d0\u4e9b API \u8fd8\u4f1a\u5728\u672a\u7ecf\u8eab\u4efd\u9a8c\u8bc1\u548c\u6388\u6743\u7684\u60c5\u51b5\u4e0b\u63d0\u4f9b\u5176\u6570\u636e\uff0c\u4f8b\u5982\u4f7f\u7528\u00a0Google API \u8d44\u6e90\u7ba1\u7406\u5668\u3002\u6211\u4eec\u5efa\u8bae\u60a8\u67e5\u770b\u7b2c\u4e09\u65b9 API \u6587\u6863\uff0c\u4e86\u89e3\u4f7f\u7528\u8be6\u60c5\u3002<\/p>\n\n\n\n<p>\u8c28\u614e<\/p>\n\n\n\n<p>\u5982\u679c\u9700\u8981\u5728\u8c03\u7528\u4e2d\u5305\u542b\u8eab\u4efd\u9a8c\u8bc1\u6807\u5934\uff0c\u8bf7\u4f7f\u7528 Apex\u00a0<code>HttpRequest<\/code>\u00a0\u7c7b\u53d1\u9001\u8bf7\u6c42\u3002\u5728 JavaScript\u4e2d\u63d0\u4f9b\u5bc6\u94a5\u5e76\u4e0d\u5b89\u5168\u3002<\/p>\n\n\n\n<p>\u82e5\u8981\u8c03\u7528\u7b2c\u4e09\u65b9 API\uff0c\u5fc5\u987b\u5148\u5c06\u7b2c\u4e09\u65b9 URL \u6dfb\u52a0\u5230\u201c\u8bbe\u7f6e\u201d\u4e2d\u7684\u201c\u53d7\u4fe1\u4efb\u7684 URL\u201d\u9875\u3002\u5982\u679c\u8981\u4ece \u83b7\u53d6\u6570\u636e\uff0c\u8bf7\u5c06\u57fa URL \u6dfb\u52a0\u4e3a\u53d7\u4fe1\u4efb\u7684 URL\u3002<code>https:\/\/www.example.com\/items\/v1\/brands<\/code><code>https:\/\/www.example.com\/<\/code><\/p>\n\n\n\n<p>\u4f7f\u7528 Fetch API \u8fdb\u884c\u7b2c\u4e09\u65b9\u00a0API\u00a0\u8c03\u7528\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 Fetch API \u4ece Lightning Web \u7ec4\u4ef6\u53d1\u51fa HTTP \u8bf7\u6c42\uff0c\u7136\u540e\u4f7f\u7528\u8be5\u65b9\u6cd5\u89e3\u6790 JSON \u54cd\u5e94\u3002<code>.json()<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>async getItems() {\n  const response = await fetch(\"http:\/\/example.com\/items.json\");\n  const items = await response.json();\n}<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p>lwc-recipes \u5b58\u50a8\u5e93\u4e2d\u7684\u00a0miscRestApiCall\u00a0\u7ec4\u4ef6\u4f1a\u5411 Google \u56fe\u4e66 API \u53d1\u9001\u8bf7\u6c42\u4ee5\u6267\u884c\u56fe\u4e66\u641c\u7d22\u3002<\/p>\n\n\n\n<p>Fetch API \u8fd4\u56de\u4e00\u4e2a promise\uff0c\u8fd9\u5728\u5904\u7406\u5f02\u6b65\u8bf7\u6c42\u65f6\u5f88\u6709\u7528\u3002\u4f7f\u7528\u8be5\u65b9\u6cd5\u53d1\u51fa\u8bf7\u6c42\u5e76\u83b7\u53d6\u8d44\u6e90\u3002\u4ec5\u5f53\u8bf7\u6c42\u5b8c\u5168\u5931\u8d25\u65f6\uff08\u4f8b\u5982\uff0c\u5f53\u7528\u6237\u5904\u4e8e\u8131\u673a\u72b6\u6001\u6216\u8bf7\u6c42\u8d85\u65f6\u65f6\uff09\u65f6\uff0c\u624d\u4f1a\u8c03\u7528\u8be5\u65b9\u6cd5\u3002\u8981\u5904\u7406 4XX \u6216 5XX \u9519\u8bef\uff0c\u8bf7\u4f7f\u7528 \u6216\u5728\u5757\u5185\u68c0\u67e5\u00a0<code>response.status<\/code>\u00a0\u5c5e\u6027\u3002<code>fetch()catch()then()try<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>async getItems() {\n  try {\n    const response = await fetch(\"http:\/\/example.com\/items.json\");\n    if (!response.ok) {\n      throw Error(response);\n    }\n    const myItems = await response.json();\n  } catch (error) {\n    console.error(\"There's a problem with your fetch operation:\", error);\n  } finally {\n    \/\/ do something regardless of whether the operation was successful\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u6709\u5173\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u00a0<em>MDN Web \u6587\u6863<\/em>\uff1a\u4f7f\u7528 Fetch API\u3002\u6216\u8005\uff0c\u60a8\u8fd8\u53ef\u4ee5\u627e\u5230\u7b26\u5408\u60a8\u8981\u6c42\u7684\u7b2c\u4e09\u65b9 Web \u7ec4\u4ef6 \uff08beta\uff09\u00a0\u6216\u7b2c\u4e09\u65b9 JavaScript\u5e93\u3002<\/p>\n\n\n\n<p>\u91cd\u8981<\/p>\n\n\n\n<p>\u867d\u7136\u60a8\u53ef\u4ee5\u901a\u8fc7\u53d7\u4fe1\u4efb\u7684 URL \u8c03\u7528\u7b2c\u4e09\u65b9 API\uff0c\u4f46\u65e0\u6cd5\u4ece\u7b2c\u4e09\u65b9\u7ad9\u70b9\u52a0\u8f7d JavaScript\u8d44\u6e90\uff0c\u5373\u4f7f\u4ece\u53d7\u4fe1\u4efb\u7684 URL \u4e5f\u662f\u5982\u6b64\u3002\u82e5\u8981\u4f7f\u7528\u7b2c\u4e09\u65b9\u7ad9\u70b9\u4e2d\u7684 JavaScript\u5e93\uff0c\u8bf7\u5c06\u5176\u6dfb\u52a0\u5230\u9759\u6001\u8d44\u6e90\uff0c\u7136\u540e\u5c06\u9759\u6001\u8d44\u6e90\u6dfb\u52a0\u5230\u7ec4\u4ef6\u4e2d\u3002\u4ece\u9759\u6001\u8d44\u6e90\u52a0\u8f7d\u5e93\u540e\uff0c\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\u5b83\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"dynamically-instantiate-components\">\u52a8\u6001\u5b9e\u4f8b\u5316\u7ec4\u4ef6<\/h2>\n\n\n\n<p>\u52a8\u6001\u7ec4\u4ef6\u5b9e\u4f8b\u5316\u53ef\u4ee5\u5e2e\u52a9\u60a8\u907f\u514d\u52a0\u8f7d\u5e76\u4e0d\u603b\u662f\u9700\u8981\u7684\u5927\u578b\u6a21\u5757\u3002\u6b64\u5916\uff0c\u5f53\u57fa\u7840\u7ec4\u4ef6\u6784\u9020\u51fd\u6570\u76f4\u5230\u8fd0\u884c\u65f6\u624d\u77e5\u9053\u65f6\uff0c\u53ef\u4ee5\u5b9e\u4f8b\u5316\u7ec4\u4ef6\u5b9e\u4f8b\u3002\u52a8\u6001\u5bfc\u5165\u662f\u4e00\u79cd\u65b9\u4fbf\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u4f7f\u7ec4\u4ef6\u66f4\u5177\u53ef\u5b9a\u5236\u6027\u3002\u4f46\u662f\uff0c\u7531\u4e8e\u5b83\u5f15\u5165\u4e86\u8fd0\u884c\u65f6\u6027\u80fd\u5f00\u9500\uff0c\u5b83\u5e76\u4e0d\u603b\u662f\u6700\u4f73\u89e3\u51b3\u65b9\u6848\uff0c\u56e0\u6b64\u4e0d\u8981\u8fc7\u5ea6\u4f7f\u7528\u5b83\u3002<\/p>\n\n\n\n<p>\u5982\u4f55\u4f7f\u7528\u52a8\u6001 Lightning Web \u7ec4\u4ef6<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/youtube.com\/watch?v=df7P22seEL8\n<\/div><\/figure>\n\n\n\n<p>\u91cd\u8981<\/p>\n\n\n\n<p>\u8981\u52a8\u6001\u5bfc\u5165\u548c\u5b9e\u4f8b\u5316 Lightning Web \u7ec4\u4ef6\uff0c\u60a8\u5fc5\u987b\u542f\u7528 Lightning Web Security\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u914d\u7f6e\u52a8\u6001\u7ec4\u4ef6\u529f\u80fd<\/h2>\n\n\n\n<p>\u82e5\u8981\u5b9e\u4f8b\u5316\u52a8\u6001\u7ec4\u4ef6\uff0c\u7ec4\u4ef6\u7684\u914d\u7f6e\u6587\u4ef6\u5fc5\u987b\u5305\u542b\u8be5\u529f\u80fd\u3002\u4f8b\u5982\uff1a<code>lightning__dynamicComponent<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;\n&lt;LightningComponentBundle xmlns=\"http:\/\/soap.sforce.com\/2006\/04\/metadata\"&gt;\n  &lt;apiVersion&gt;59.0&lt;\/apiVersion&gt;\n  &lt;capabilities&gt;\n    &lt;capability&gt;lightning__dynamicComponent&lt;\/capability&gt;\n  &lt;\/capabilities&gt;\n&lt;\/LightningComponentBundle&gt;<\/code><\/pre>\n\n\n\n<p>\u82e5\u8981\u4f7f\u7528\u6b64\u529f\u80fd\uff0c\u5fc5\u987b\u5c06\u8be5\u5c5e\u6027\u8bbe\u7f6e\u4e3a 55.0 \u6216\u66f4\u9ad8\u7248\u672c\u3002<code>apiVersion<\/code><\/p>\n\n\n\n<p>\u6709\u5173\u7ec4\u4ef6\u914d\u7f6e\u6587\u4ef6\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u7ec4\u4ef6\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u52a8\u6001\u7ec4\u4ef6\u8bed\u6cd5<\/h2>\n\n\n\n<p>\u82e5\u8981\u52a8\u6001\u5b9e\u4f8b\u5316\u7ec4\u4ef6\uff0c\u8bf7\u5728\u7ec4\u4ef6\u7684 HTML \u6587\u4ef6\u4e2d\u5c06\u6258\u7ba1\u5143\u7d20\u4e0e\u6307\u4ee4\u4e00\u8d77\u4f7f\u7528\u3002<code>&lt;lwc:component&gt;<\/code><code>lwc:is<\/code><\/p>\n\n\n\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528 .<code>&lt;lwc:component&gt;<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;template&gt;\n    &lt;div class=\"container\"&gt;\n        &lt;lwc:component lwc:is={componentConstructor}&gt;&lt;\/lwc:component&gt;\n    &lt;\/div&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<p><code>&lt;lwc:component&gt;<\/code>\u5728 DOM \u4e2d\u7528\u4f5c\u5360\u4f4d\u7b26\uff0c\u7528\u4e8e\u5448\u73b0\u6307\u5b9a\u7684\u52a8\u6001\u7ec4\u4ef6\u3002\u60a8\u5fc5\u987b\u4e0e\u6307\u4ee4\u4e00\u8d77\u4f7f\u7528\u3002<code>&lt;lwc:component&gt;<\/code><code>lwc:is<\/code><\/p>\n\n\n\n<p>\u8be5\u6307\u4ee4\u5728\u8fd0\u884c\u65f6\u5411\u6258\u7ba1\u5143\u7d20\u63d0\u4f9b\u5bfc\u5165\u7684\u6784\u9020\u51fd\u6570\u3002 \u63a5\u53d7\u5728\u8fd0\u884c\u65f6\u89e3\u6790\u4e3a\u6784\u9020\u51fd\u6570\u7684\u8868\u8fbe\u5f0f\u3002<code>lwc:is<\/code><code>&lt;lwc:component&gt;<\/code><code>lwc:is<\/code><code>LightningElement<\/code><\/p>\n\n\n\n<p>\u5982\u679c\u6784\u9020\u51fd\u6570\u662f\u4f2a\u9020\u7684\uff0c\u5219\u4e0d\u4f1a\u5448\u73b0\u6807\u8bb0\u53ca\u5176\u6240\u6709\u5b50\u7ea7\u3002<code>&lt;lwc:component><\/code><\/p>\n\n\n\n<p>\u5982\u679c\u5b9a\u4e49\u4e86\u8868\u8fbe\u5f0f\u503c\uff0c\u4f46\u672a\u5b9a\u4e49\u6784\u9020\u51fd\u6570\uff0c\u5219\u4f1a\u5f15\u53d1\u9519\u8bef\u3002<code>LightningElement<\/code><\/p>\n\n\n\n<p>\u5728\u7ec4\u4ef6\u7684 JavaScript\u6587\u4ef6\u4e2d\uff0c\u4f7f\u7528\u00a0<code>import\uff08\uff09<\/code>\u00a0\u52a8\u6001\u5bfc\u5165\u8bed\u6cd5\u5bfc\u5165\u81ea\u5b9a\u4e49\u5143\u7d20\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { LightningElement } from \"lwc\";\nexport default class extends LightningElement {\n  componentConstructor;\n  \/\/ Use connectedCallback() on the dynamic component\n  \/\/ to signal when it's attached to the DOM\n  connectedCallback() {\n    import(\"c\/concreteComponent\")\n      .then(({ default: ctor }) =&gt; (this.componentConstructor = ctor))\n      .catch((err) =&gt; console.log(\"Error importing component\"));\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u8be5\u8c03\u7528\u8fd4\u56de\u4e00\u4e2a\u89e3\u6790\u4e3a\u6784\u9020\u51fd\u6570\u7684 promise\u3002\u7136\u540e\u5448\u73b0\u5143\u7d20\u800c\u4e0d\u662f\u5360\u4f4d\u7b26\u3002\u7528\u4e8e\u52a8\u6001\u7ec4\u4ef6\u7684\u6807\u8bb0\u540d\u79f0\u662f\u4e3a\u7ed9\u5b9a\u6784\u9020\u51fd\u6570\u8fd4\u56de\u7684\u503c\u3002<code>import()<\/code><code>LightningElement<\/code><code>lwc:component<\/code><\/p>\n\n\n\n<p>\u4e0e\u5e38\u89c4\u7ec4\u4ef6\u7c7b\u4f3c\uff0c\u52a8\u6001\u7ec4\u4ef6\u88ab\u5b9e\u4f8b\u5316\u5e76\u9644\u52a0\u5230 DOM\u3002\u5982\u679c\u52a8\u6001\u7ec4\u4ef6\u7684\u6784\u9020\u51fd\u6570\u53d1\u751f\u66f4\u6539\uff0c\u5219\u4f1a\u4ece DOM \u4e2d\u5220\u9664\u73b0\u6709\u5143\u7d20\u3002<\/p>\n\n\n\n<p>\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u5bfc\u5165\u5b8c\u6210\u540e\u5c06\u5448\u73b0\u4ee5\u4e0b HTML\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"container\"&gt;\n  &lt;c-concrete-component&gt;&lt;\/c-concrete-component&gt;\n&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<p>\u9664\u4e86\u4f7f\u7528\u00a0<code>then\uff08\uff09<\/code>\u00a0\u65b9\u6cd5\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 and \u8fd0\u7b97\u7b26\u8fd4\u56de\u7ec4\u4ef6\u6784\u9020\u51fd\u6570\u3002<code>asyncawait<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { LightningElement } from \"lwc\";\nexport default class App extends LightningElement {\n  componentConstructor;\n  async connectedCallback() {\n    const { default: ctor } = await import(\"c\/myComponent\");\n    this.componentConstructor = ctor;\n  }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u9009\u62e9\u52a8\u6001\u7ec4\u4ef6<\/h2>\n\n\n\n<p>\u5fc5\u987b\u5148\u5c06\u81ea\u5b9a\u4e49\u5143\u7d20\u9644\u52a0\u5230 DOM\uff0c\u7136\u540e\u624d\u80fd\u9009\u62e9\u5b83\u3002\u82e5\u8981\u9009\u62e9\u52a8\u6001\u7ec4\u4ef6\uff0c\u8bf7\u4f7f\u7528\u6307\u4ee4\u6216\u4f7f\u7528\u5206\u914d\u7ed9\u8be5\u7ec4\u4ef6\u7684\u5c5e\u6027\uff0c\u4f8b\u5982\u7c7b\u540d\u3002<code>lwc:ref<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;template&gt;\n    &lt;lwc:component lwc:is={componentConstructor}\n                lwc:ref=\"myCmp\"&gt;\n    &lt;\/lwc:component&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<p>\u8981\u786e\u5b9a\u52a8\u6001\u7ec4\u4ef6\u662f\u5426\u9644\u52a0\u5230 DOM\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u52a8\u6001\u7ec4\u4ef6\u4e2d\u7528\u4e8e\u5728\u9644\u52a0\u5230 DOM \u65f6\u53d1\u51fa\u4fe1\u53f7\u3002<code>connectedCallback<\/code><\/li>\n\n\n\n<li>\u5728\u7236\u7ec4\u4ef6\u4e0a\u4f7f\u7528\u4ee5\u68c0\u6d4b\u52a8\u6001\u7ec4\u4ef6\u4f55\u65f6\u5448\u73b0\u4e3a DOM\u3002<code>renderedCallback<\/code><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>import { LightningElement } from \"lwc\";\nexport default class extends LightningElement {\n  componentConstructor;\n\n  connectedCallback() {\n    import(\"lightning\/concreteComponent\")\n      .then(({ default: ctor }) =&gt; (this.componentConstructor = ctor))\n      .catch((err) =&gt; console.log(\"Error importing component\"));\n  }\n\n  renderedCallback() {\n    \/\/ this.refs.myCmp will be available on the next rendering cycle after the constructor is set\n    if (this.refs.myCmp) {\n      \/\/ this.refs.myCmp will contain a reference to the DOM node\n      console.log(this.refs.myCmp);\n    }\n  }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5206\u914d\u5c5e\u6027\u548c\u6a21\u677f\u6307\u4ee4<\/h2>\n\n\n\n<p>\u6240\u6709\u53ef\u5e94\u7528\u4e8e \u7684\u53d7\u652f\u6301\u7684 HTML \u5c5e\u6027\u4e5f\u53ef\u4ee5\u5e94\u7528\u4e8e \u3002<code>HTMLElement<\/code><code>lwc:component<\/code><\/p>\n\n\n\n<p>\u4e00\u4e9b\u4f8b\u5b50\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6807\u51c6\u5168\u5c40 HTML \u5c5e\u6027<\/li>\n\n\n\n<li>\u81ea\u5b9a\u4e49 HTML \u5c5e\u6027\uff0c\u4f8b\u5982<code>data-*<\/code><\/li>\n\n\n\n<li>\u4e8b\u4ef6\u4fa6\u542c\u5668<\/li>\n<\/ul>\n\n\n\n<p>\u52a8\u6001\u7ec4\u4ef6\u7684\u884c\u4e3a\u7c7b\u4f3c\u4e8e\u6807\u51c6\u7684 Lightning Web \u7ec4\u4ef6\u3002 \u652f\u6301\u00a0HTML \u5143\u7d20\u7684\u6307\u4ee4\uff0c\u4f46 .<code>lwc:componentlwc:external<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b50\u5143\u7d20<\/h2>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u5728\u52a8\u6001\u7ec4\u4ef6\u4e0a\u5305\u542b\u5b50\u5143\u7d20\u3002 \u9996\u5148\u5448\u73b0\u52a8\u6001\u7ec4\u4ef6\uff0c\u7136\u540e\u5448\u73b0\u5176\u5b50\u7ec4\u4ef6\u3002\u6bcf\u6b21\u52a8\u6001\u7ec4\u4ef6\u66f4\u6539\u65f6\uff0c\u90fd\u4f1a\u4ece DOM \u4e2d\u5220\u9664\u73b0\u6709\u5143\u7d20\u53ca\u5176\u6240\u6709\u5b50\u5143\u7d20\u3002\u7136\u540e\uff0c\u65b0\u7684\u52a8\u6001\u7ec4\u4ef6\u5c06\u4e0e\u5176\u5b50\u7ec4\u4ef6\u4e00\u8d77\u5448\u73b0\u3002<code>&lt;lwc:component&gt;<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;template&gt;\n    &lt;lwc:component lwc:is={ctor}&gt;\n        &lt;span&gt;child&lt;\/span&gt;\n    &lt;\/lwc:component&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728\u6807\u8bb0\u4e2d\u4f20\u9012\u5c5e\u6027<\/h2>\n\n\n\n<p>\u5c06\u5c5e\u6027\u4f20\u9012\u7ed9\u52a8\u6001\u7ec4\u4ef6\u7c7b\u4f3c\u4e8e\u5c06\u5c5e\u6027\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6\u3002\u5728\u52a8\u6001\u7ec4\u4ef6\u4e2d\uff0c\u4f7f\u7528\u5c5e\u6027\u8fdb\u884c\u6279\u6ce8\u5e76\u5728\u6a21\u677f\u4e2d\u4f7f\u7528\u5b83\u3002<code>@api<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ dynamicCmp.js\nimport { LightningElement, api } from \"lwc\";\n\nexport default class extends LightningElement {\n  @api text;\n}<\/code><\/pre>\n\n\n\n<p>\u5728\u5360\u4f4d\u7b26\u7ec4\u4ef6\u4e2d\uff0c\u5bfc\u5165\u81ea\u5b9a\u4e49\u5143\u7d20\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myApp.js\nimport { LightningElement } from \"lwc\";\nimport DynamicCmp from \"c\/dynamicCmp\";\n\nexport default class extends LightningElement {\n  componentConstructor = DynamicCmp;\n}<\/code><\/pre>\n\n\n\n<p>\u4f20\u5165\u5c5e\u6027\u7684\u503c\u3002<code>text<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- myApp.html --&gt;\n&lt;template&gt;\n  &lt;lwc:component lwc:is={componentConstructor} text=\"I love dynamic components!\"&gt;&lt;\/lwc:component&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u65e0\u6cd5\u901a\u8fc7\u6807\u51c6\u6807\u8bb0\u8bed\u6cd5\u8bbe\u7f6e\u52a8\u6001\u7ec4\u4ef6\u53ef\u4ee5\u63a5\u53d7\u7684\u6240\u6709\u6f5c\u5728\u5c5e\u6027\u3002\u4f8b\u5982\uff0c\u5f53\u8981\u5b9e\u4f8b\u5316\u7684\u7ec4\u4ef6\u4e8b\u5148\u4e0d\u77e5\u9053\uff0c\u6216\u8005\u8981\u5b9e\u4f8b\u5316\u7684\u7ec4\u4ef6\u63a5\u53d7\u4e00\u7ec4\u4e0d\u540c\u7684\u516c\u5171\u5c5e\u6027\u65f6\u3002<\/p>\n\n\n\n<p>\u5728\u8fd9\u4e9b\u7279\u5b9a\u60c5\u51b5\u4e0b\uff0c[lwc&#8217; \u8fd8\u4f7f\u5143\u7d20\u80fd\u591f\u63a5\u53d7\u5728\u8fd0\u884c\u65f6\u7ed1\u5b9a\u4e3a\u5c5e\u6027\u7684\u5bf9\u8c61\u3002<code>lwc:spread directive](..\/create\/create-components-spread-properties.md) can be used to dynamically set to dynamic component properties at runtime.<\/code><\/p>\n\n\n\n<p>\u901a\u8fc7\u4f7f\u7528 \u6ce8\u91ca\u5c5e\u6027\uff0c\u4f7f\u5c5e\u6027\u516c\u5f00\u3002<code>@api<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ dynamicCmp.js\nimport { LightningElement, api } from \"lwc\";\n\nexport default class extends LightningElement {\n  @api city;\n  @api state;\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528\u6a21\u677f\u4e2d\u7684\u5c5e\u6027\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- dynamicCmp.html --&gt;\n&lt;template&gt;\n  &lt;p&gt;{city}, {state}&lt;\/p&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<p>\u50cf\u5f80\u5e38\u4e00\u6837\u5bfc\u5165\u81ea\u5b9a\u4e49\u5143\u7d20\uff0c\u5e76\u4f7f\u7528\u5c5e\u6027\u540d\u79f0\u548c\u503c\u521b\u5efa\u5bf9\u8c61\u3002<code>childProps<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ myApp.js\nimport { LightningElement } from \"lwc\";\n\nexport default class extends LightningElement {\n  componentConstructor;\n  childProps = { city: \"San Francisco\", state: \"CA\" };\n\n  connectedCallback() {\n    \/\/ import your custom element\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u7528\u4e8e\u4f20\u5165\u5c5e\u6027\uff0c\u7136\u540e\u5728\u52a8\u6001\u7ec4\u4ef6\u4e0a\u5448\u73b0\u201cSan Francisco\uff0c CA\u201d\u3002<code>lwc:spread<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- myApp.html--&gt;\n&lt;template&gt;\n  &lt;lwc:component lwc:is={componentConstructor} lwc:spread={childProps}&gt;&lt;\/lwc:component&gt;\n&lt;\/template&gt;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5305\u4e2d\u7684\u52a8\u6001\u7ec4\u4ef6<\/h2>\n\n\n\n<p>\u60a8\u53ea\u80fd\u5728\u6258\u7ba1\u5305\u4e2d\u4f7f\u7528\u52a8\u6001\u7ec4\u4ef6\u3002\u4e0d\u652f\u6301\u672a\u9501\u5b9a\u5305\u4e2d\u7684\u52a8\u6001\u7ec4\u4ef6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6027\u80fd\u6ce8\u610f\u4e8b\u9879<\/h2>\n\n\n\n<p>\u7531\u4e8e\u52a8\u6001\u5bfc\u5165\u672c\u8d28\u4e0a\u662f\u201c\u52a8\u6001\u201d\u7684\uff0c\u56e0\u6b64\u6846\u67b6\u4e0d\u4f1a\u63d0\u524d\u9884\u53d6\u8fd9\u4e9b\u6a21\u5757\uff0c\u8fd9\u6709\u65f6\u4f1a\u5bf9\u7528\u6237\u4f53\u9a8c\u9020\u6210\u4e0d\u5229\u5f71\u54cd\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u9759\u6001 import \u8bed\u53e5\u65f6\uff0c\u6846\u67b6\u4f1a\u5728\u8fd0\u884c\u65f6\u5728\u5355\u4e2a JavaScript\u6587\u4ef6\u4e2d\u63d0\u4f9b\u7ec4\u4ef6\u53ca\u5176\u6240\u6709\u4f9d\u8d56\u9879\u3002\u82e5\u8981\u83b7\u53d6\u52a8\u6001\u5bfc\u5165\u7684\u7ec4\u4ef6\uff0c\u5982\u679c\u5185\u5bb9\u5c1a\u672a\u5b58\u50a8\u5728\u6d4f\u89c8\u5668 HTTP \u7f13\u5b58\u4e2d\uff0c\u5219\u6846\u67b6\u5fc5\u987b\u6267\u884c\u7f51\u7edc\u5f80\u8fd4\u3002<\/p>\n\n\n\n<p>\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u7ec4\u4ef6\u7c7b\u4e0e\u7ec4\u4ef6\u7c7b\u4e00\u8d77\u4f5c\u4e3a\u5355\u4e2a JavaScript\u6a21\u5757\u63d0\u4f9b\u7ed9\u6d4f\u89c8\u5668\u3002\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u5c06\u5728\u8fd0\u884c\u65f6\u68c0\u7d22\u7ec4\u4ef6\u7c7b\u3002<code>BundleExampleStaticImportDynamicImportloadModule<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { LightningElement } from \"lwc\";\nimport StaticImport from \"c\/static-import\";\n\nexport default class BundleExample extends LightningElement {\n  async loadModule() {\n    const { default: DynamicImport } = await import(\"c\/dynamic-import\");\n    return DynamicImport;\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528\u52a8\u6001\u7ec4\u4ef6\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u5efa\u8bae\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u52a8\u6001\u5bfc\u5165\u53ef\u9759\u6001\u5206\u6790<\/h3>\n\n\n\n<p>\u867d\u7136\u76ee\u524d\u5c1a\u672a\u5b9e\u73b0\uff0c\u4f46\u672a\u6765\u7684\u6846\u67b6\u4f18\u5316\u53ef\u4ee5\u4f18\u5316\u53ef\u9759\u6001\u5206\u6790\u52a8\u6001\u5bfc\u5165\u7684\u4ee3\u7801\u3002\u5c06 JavaScript \u5b57\u7b26\u4e32\u6587\u5b57\u4f20\u9012\u7ed9\u51fd\u6570\uff1a<code>import()<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import(\"c\/analyzable\"); \/\/ \ud83d\udc4d: Statically analyzable\nimport(\"c\/\" + \"analyzable\"); \/\/ \ud83d\udc4e: Not statically analyzable\nimport(\"c\/\" + componentName); \/\/ \ud83d\udc4e: Not statically analyzable<\/code><\/pre>\n\n\n\n<p>\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u5bfc\u5165\u603b\u662f\u65e0\u6cd5\u8fdb\u884c\u9759\u6001\u5206\u6790\u3002\u5f53\u901a\u8fc7\u5143\u6570\u636e\u5b9a\u4e49\u7ec4\u4ef6\u540d\u79f0\u65f6\uff0c\u8fd9\u79cd\u60c5\u51b5\u5c24\u5176\u5982\u6b64\u3002\u5bf9\u4e8e\u6240\u6709\u5176\u4ed6\u60c5\u51b5\uff0c\u6211\u4eec\u5f3a\u70c8\u5efa\u8bae\u5c06\u6240\u6709\u52a8\u6001\u5bfc\u5165\u8fdb\u884c\u9759\u6001\u5206\u6790\uff0c\u4ee5\u4fbf\u5c06\u6765\u8fdb\u884c\u6846\u67b6\u4f18\u5316\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e0d\u8981\u8fc7\u5ea6\u4f7f\u7528\u52a8\u6001\u5bfc\u5165<\/h3>\n\n\n\n<p>\u52a8\u6001\u5bfc\u5165\u662f\u4e00\u79cd\u65b9\u4fbf\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u4f7f\u7ec4\u4ef6\u66f4\u5177\u53ef\u5b9a\u5236\u6027\u3002\u4f46\u662f\uff0c\u5b83\u5e76\u4e0d\u603b\u662f\u6700\u4f73\u89e3\u51b3\u65b9\u6848\uff0c\u56e0\u4e3a\u5b83\u5f15\u5165\u4e86\u8fd0\u884c\u65f6\u6027\u80fd\u5f00\u9500\u3002\u8ba9\u6211\u4eec\u7528\u4e00\u4e9b\u4f8b\u5b50\u6765\u8bf4\u660e\u6f5c\u5728\u7684\u9677\u9631\u3002<\/p>\n\n\n\n<p>\u5728\u7b2c\u4e00\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u56fe\u8868\u7ec4\u4ef6 .\u5b83\u63a5\u53d7\u56fe\u8868\u7c7b\u578b\u4f5c\u4e3a\u516c\u5171\u5c5e\u6027\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u6761\u5f62\u56fe\u3001\u997c\u56fe\u6216\u6298\u7ebf\u56fe\u3002\u5728\u5185\u90e8\uff0c\u8be5\u7ec4\u4ef6\u4f7f\u7528 c\/barChart\u3001c\/pieChart \u6216 c\/lineChart \u7ec4\u4ef6\u4e4b\u4e00\u6765\u6839\u636e\u7c7b\u578b\u5448\u73b0\u56fe\u8868\u3002<code>c\/chart<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \ud83d\udc4e DON'T USE THIS\n\/\/ Example with non statically analyzable dynamic import:\nimport { LightningElement, api } from \"lwc\";\n\nconst KNOWN_TYPE = new Set(&#91;\"bar\", \"pie\", \"line\"]);\n\nexport default class App extends LightningElement {\n  chartCtor;\n\n  _type = \"line\";\n\n  @api\n  get type() {\n    return this._type;\n  }\n  set type(val) {\n    if (!KNOWN_TYPE.has(val)) {\n      console.warn(`Unknown chart type: ${val}`);\n    }\n\n    this._type = val;\n\n    const chartComponentName = `c\/${val}Chart`;\n    import(chartComponentName).then(({ default: ChartCtor }) =&gt; {\n      this.chartCtor = ChartCtor;\n    });\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u5982\u679c \u3001 \u548c \u7684\u603b\u6346\u7ed1\u5305\u5927\u5c0f\u8f83\u5c0f\uff0c\u5219\u6700\u597d\u5c06\u7ec4\u4ef6\u66f4\u65b0\u4e3a\u4f7f\u7528\u9759\u6001\u5bfc\u5165\uff0c\u4ee5\u907f\u514d\u8fd0\u884c\u65f6\u7684\u7f51\u7edc\u5f80\u8fd4\u3002\u901a\u5e38\uff0c\u6211\u4eec\u5efa\u8bae\u60a8\u4ece\u9759\u6001\u5bfc\u5165\u5f00\u59cb\uff0c\u5982\u679c\u7531\u4e8e\u5bfc\u5165\u975e\u4e25\u683c\u9700\u8981\u7684\u7ec4\u4ef6\u800c\u5bfc\u81f4\u6027\u80fd\u6210\u4e3a\u95ee\u9898\uff0c\u5219\u4f7f\u7528\u52a8\u6001\u5bfc\u5165\u3002<code>c\/barChart<\/code><code>c\/pieChart<\/code><code>c\/lineChart<\/code><code>c\/chart<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \ud83d\udc4d USE THIS\n\/\/ Example with static imports:\nimport { LightningElement, api } from \"lwc\";\n\nimport BarChart from \"c\/barChart\";\nimport PieChart from \"c\/pieChart\";\nimport LineChart from \"c\/lineChart\";\n\nconst KNOWN_TYPE = new Set(&#91;\"bar\", \"pie\", \"line\"]);\nconst CHART_MAPPING = {\n  bar: BarChart,\n  pie: PieChart,\n  line: LineChart,\n};\n\nexport default class App extends LightningElement {\n  chartCtor;\n\n  _type = \"line\";\n\n  @api\n  get type() {\n    return this._type;\n  }\n  set type(val) {\n    if (!KNOWN_TYPE.has(val)) {\n      console.warn(`Unknown chart type: ${val}`);\n    }\n\n    this._type = val;\n    this.chartCtor = CHART_MAPPING&#91;val];\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u9759\u6001\u5bfc\u5165\u6240\u6709\u4e09\u4e2a\u6a21\u5757\u7531\u4e8e\u5305\u5927\u5c0f\u589e\u52a0\u800c\u5bf9\u8fd0\u884c\u65f6\u6027\u80fd\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\uff0c\u4ecd\u7136\u53ef\u4ee5\u66f4\u65b0\u793a\u4f8b\u4ee5\u5c06\u975e\u9759\u6001\u53ef\u5206\u6790\u7684\u52a8\u6001\u5bfc\u5165\u8f6c\u6362\u4e3a\u9759\u6001\u53ef\u5206\u6790\u7684\u52a8\u6001\u5bfc\u5165\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \ud83d\udc4d USE THIS\n\/\/ Example with statically analyzable dynamic import:\nimport { LightningElement, api } from \"lwc\";\n\nconst KNOWN_TYPE = new Set(&#91;\"bar\", \"pie\", \"line\"]);\nconst CHART_MAPPING = {\n  bar: () =&gt; import(\"c\/barChart\"),\n  pie: () =&gt; import(\"c\/pieChart\"),\n  line: () =&gt; import(\"c\/lineChart\"),\n};\n\nexport default class App extends LightningElement {\n  chartCtor;\n\n  _type = \"line\";\n\n  @api\n  get type() {\n    return this._type;\n  }\n  set type(val) {\n    if (!KNOWN_TYPE.has(val)) {\n      console.warn(`Unknown chart type: ${val}`);\n    }\n\n    this._type = val;\n    CHART_MAPPING&#91;val]().then(({ default: ChartCtor }) =&gt; {\n      this.chartCtor = ChartCtor;\n    });\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u662f\u53e6\u4e00\u4e2a\u8bf4\u660e\u8fd9\u4e00\u539f\u5219\u7684\u4f8b\u5b50\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u8d1f\u8d23\u5448\u73b0\u5b9e\u4f53\u5b57\u6bb5\u503c\u7684\u7ec4\u4ef6\u3002\u7531\u4e8e\u5b83\u662f\u4e00\u4e2a\u6cdb\u578b\u7ec4\u4ef6\uff0c\u56e0\u6b64\u5b83\u63a5\u53d7\u4e00\u4e2a\u6e32\u67d3\u5668\u516c\u5171\u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u662f\u7528\u4e8e\u6e32\u67d3\u6b64\u5b57\u6bb5\u7684\u7ec4\u4ef6\u7684\u540d\u79f0\u3002\u4e0e\u524d\u9762\u7684\u793a\u4f8b\u4e0d\u540c\uff0c\u5df2\u77e5\u6e32\u67d3\u5668\u7684\u5217\u8868\u4e8b\u5148\u662f\u672a\u77e5\u7684\uff0c\u56e0\u4e3a\u7ec4\u4ef6\u53ef\u80fd\u63a5\u53d7\u4efb\u4f55\u7ec4\u4ef6\u540d\u79f0\u3002<code>c\/field<\/code><code>c\/field<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \ud83d\udc4e DON'T USE THIS\n\/\/ Example with component name as prop:\nimport { LightningElement, api } from \"lwc\";\n\nexport default class Field extends LightningElement {\n  rendererCtor;\n\n  _renderer;\n\n  @api\n  get renderer() {\n    return this._renderer;\n  }\n  set renderer(val) {\n    this._renderer = val;\n\n    import(val).then(({ default: rendererCtor }) =&gt; {\n      this.rendererCtor = rendererCtor;\n    });\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u6027\u80fd\u66f4\u9ad8\u7684\u65b9\u6cd5\u662f\u8ba9\u7ec4\u4ef6\u63a5\u53d7\u6e32\u67d3\u5668\u6784\u9020\u51fd\u6570\u4f5c\u4e3a\u516c\u5171\u5c5e\u6027\uff0c\u800c\u4e0d\u662f\u6e32\u67d3\u5668\u7ec4\u4ef6\u540d\u79f0\u3002\u4ec5\u5f53\u7ec4\u4ef6\u672a\u66b4\u9732\u7ed9\u6784\u5efa\u5668\uff08\u5982 Lightning \u5e94\u7528\u7a0b\u5e8f\u6784\u5efa\u5668\uff09\u65f6\uff0c\u8fd9\u624d\u6709\u6548\u3002<code>c\/field<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \ud83d\udc4d USE THIS\n\/\/ Example with component constructor as prop:\nimport { LightningElement, api } from \"lwc\";\n\nexport default class Field extends LightningElement {\n  @api rendererCtor;\n}<\/code><\/pre>\n\n\n\n<p>\u5728\u8fd9\u79cd\u66ff\u4ee3\u8bbe\u8ba1\u4e2d\uff0c\u5b57\u6bb5\u7ec4\u4ef6\u5c06\u6e32\u67d3\u5668\u7ec4\u4ef6\u7c7b\u7684\u52a0\u8f7d\u59d4\u6258\u7ed9\u5176\u7236\u7ec4\u4ef6\u3002\u7236\u7ec4\u4ef6\u73b0\u5728\u53ef\u4ee5\u6839\u636e\u5176\u8981\u6c42\u4f7f\u7528\u9759\u6001\u6216\u52a8\u6001\u5bfc\u5165\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u5fc5\u987b\u6709\u4e00\u4e2a JavaScript \u6587\u4ef6\u3002Lightning Web \u7ec4\u4ef6\u4e2d\u7684 JavaScript \u6587\u4ef6\u662f ES6 \u6a21\u5757\u3002<\/p>\n","protected":false},"author":1,"featured_media":3821,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[240],"class_list":["post-3820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lightning-web-","tag-javascript-"],"yoast_head":"<!-- This site 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