{"id":3268,"date":"2021-01-13T13:58:44","date_gmt":"2021-01-13T05:58:44","guid":{"rendered":"http:\/\/www.salesforcecrm.cn\/?p=3268"},"modified":"2021-01-13T13:58:44","modified_gmt":"2021-01-13T05:58:44","slug":"%e9%80%82%e7%94%a8%e4%ba%8evisualforce%e5%bc%80%e5%8f%91%e4%ba%ba%e5%91%98%e7%9a%84lightning-web%e7%bb%84%e4%bb%b6-%e5%a4%84%e7%90%86javascript%e4%b8%ad%e7%9a%84%e7%94%a8%e6%88%b7%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3268","title":{"rendered":"\u9002\u7528\u4e8eVisualforce\u5f00\u53d1\u4eba\u5458\u7684Lightning Web\u7ec4\u4ef6 &#8211; \u5904\u7406JavaScript\u4e2d\u7684\u7528\u6237\u64cd\u4f5c"},"content":{"rendered":"<h2 id=\"learning-objectives\"><span>\u5b66\u4e60\u76ee\u6807<\/span><\/h2>\n<p><span>\u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\uff1a<\/span><\/p>\n<ul>\n<li><span>\u521b\u5efa\u4e00\u4e2aSFDX\u9879\u76ee\u3002<\/span><\/li>\n<li><span>\u521b\u5efa\u4e00\u4e2a\u95ea\u7535Web\u7ec4\u4ef6\u3002<\/span><\/li>\n<li><span>\u5e94\u7528\u67b6\u6784\u548c\u7f16\u7801\u6982\u5ff5\u3002<\/span><\/li>\n<\/ul>\n<p><span>\u5728Visualforce\u4e2d\uff0c\u8981\u6267\u884cUI\u66f4\u6539\uff0c\u6709\u65f6\u60a8\u9700\u8981\u5728\u670d\u52a1\u5668\u4e0a\u91cd\u65b0\u5448\u73b0\u9875\u9762\u3002\u5982\u60a8\u6240\u77e5\uff0c\u5728Lightning Web Components\u67b6\u6784\u4e2d\uff0c\u91cd\u65b0\u6e32\u67d3\u53d1\u751f\u5728\u5ba2\u6237\u7aef\u4e0a\u3002\u60a8\u5b66\u4e60\u4e86\u5982\u4f55\u5728JavaScript\u4e2d\u8bbe\u7f6e\u5c5e\u6027\u4ee5\u66f4\u6539\u7ec4\u4ef6\u72b6\u6001\uff0c\u4ece\u800c\u4f7fLightning Web Components\u5f15\u64ce\u91cd\u65b0\u5448\u73b0\u7ec4\u4ef6\u3002\u60a8\u8fd8\u5b66\u4e60\u4e86\u5982\u4f55\u54cd\u5e94JavaScript\u4e2d\u7684\u7528\u6237\u4ea4\u4e92\u3002\u8ba9\u6211\u4eec\u89c2\u5bdf\u4e00\u4e0b\u8fd9\u4e9b\u6982\u5ff5\u3002\u8003\u8651\u6b64\u793a\u4f8bVisualforce\u9875\u9762\u3002<\/span><\/p>\n<p><strong><span>accountSearch.page<\/span><\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token operator\">&lt;<\/span>apex<span class=\"token operator\">:<\/span>page controller<span class=\"token operator\">=<\/span><span class=\"token string\">\"InputController\"<\/span> docType<span class=\"token operator\">=<\/span><span class=\"token string\">\"html-5.0\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>apex<span class=\"token operator\">:<\/span>form<span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>apex<span class=\"token operator\">:<\/span>input type<span class=\"token operator\">=<\/span><span class=\"token string\">\"number\"<\/span> label<span class=\"token operator\">=<\/span><span class=\"token string\">\"Number of Employees\"<\/span> value<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!numberOfEmployees}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>apex<span class=\"token operator\">:<\/span>commandButton value<span class=\"token operator\">=<\/span><span class=\"token string\">\"Reset\"<\/span> action<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!reset}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>apex<span class=\"token operator\">:<\/span>form<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>apex<span class=\"token operator\">:<\/span>page<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong><span>AccountSearchController.cls<\/span><\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountSearchController<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Integer<\/span> numberOfEmployees <span class=\"token punctuation\">{<\/span>get<span class=\"token punctuation\">;<\/span> set<span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">reset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>numberOfEmployees <span class=\"token operator\">=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><span>\u91cd\u7f6e\u6309\u94ae\u6e05\u9664\u8f93\u5165\u503c\uff0c\u7136\u540e\u9875\u9762\u5728\u670d\u52a1\u5668\u4e0a\u91cd\u65b0\u5448\u73b0\u3002\u5728Lightning Web\u7ec4\u4ef6\u4e2d\uff0c\u60a8\u53ef\u4ee5\u5355\u72ec\u4f7f\u7528JavaScript\u8fdb\u884c\u76f8\u540c\u7684UI\u66f4\u6539\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/span><\/p>\n<p><strong><span>accountSearch.html<\/span><\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>template<span class=\"token punctuation\">&gt;<\/span><\/span>\n    <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>card<span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>input\n            type<span class=\"token operator\">=<\/span><span class=\"token string\">\"number\"<\/span>\n            label<span class=\"token operator\">=<\/span><span class=\"token string\">\"Number of Employees\"<\/span>\n            value<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>numberOfEmployees<span class=\"token punctuation\">}<\/span>\n            onchange<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleChange<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>input<span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>button\n            label<span class=\"token operator\">=<\/span><span class=\"token string\">\"Reset\"<\/span>\n            onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>reset<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>button<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>card<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>template<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong><span>accountSearch.js<\/span><\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">}<\/span> from <span class=\"token string\">'lwc'<\/span><span class=\"token punctuation\">;<\/span>\nexport <span class=\"token keyword\">default<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountSearch<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">{<\/span>\n    numberOfEmployees <span class=\"token operator\">=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token function\">handleChange<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>numberOfEmployees <span class=\"token operator\">=<\/span> event<span class=\"token punctuation\">.<\/span>detail<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token function\">reset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>numberOfEmployees <span class=\"token operator\">=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><span>\u4ee3\u7801\u91cd\u70b9\uff1a<\/span><\/p>\n<p><strong><span>accountSearch.html<\/span><\/strong><\/p>\n<ul>\n<li><span>\u7b2c3-8\u884c\uff1a\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a<\/span><code>lightning-input<\/code><span>\u7ec4\u4ef6\u6765\u63a5\u6536\u7528\u6237\u8f93\u5165\u3002<\/span><\/li>\n<li><span>\u7b2c6\u884c\uff1a\u6211\u4eec\u5c06<\/span><code>numberOfEmployees<\/code><span>JavaScript\u5c5e\u6027\u7ed1\u5b9a\u5230<\/span><code>lightning-input<\/code><span>\u7ec4\u4ef6\u7684<\/span><code>value<\/code><span>\u5c5e\u6027\u3002<\/span><\/li>\n<li><span>\u7b2c7\u884c\uff1a\u6211\u4eec\u5c06<\/span><code>handleChange<\/code><span>\u65b9\u6cd5\u7ed1\u5b9a\u5230<\/span><code>lightning-input<\/code><span>\u7ec4\u4ef6\u7684<\/span><code>change<\/code><span>\u4e8b\u4ef6\u3002<\/span><\/li>\n<li><span>\u7b2c9\u81f312\u884c\uff1a\u6211\u4eec\u5b9a\u4e49\u4e86<\/span><code>lightning-button<\/code>\u00a0<span>\u57fa\u672c\u7ec4\u4ef6<\/span><span>\u3002<\/span><\/li>\n<li><span>\u7b2c11\u884c\uff1a\u5f53\u7528\u6237\u5355\u51fb\u6309\u94ae\u65f6\uff0cLightning Web Components\u5f15\u64ce\u5c06\u8c03\u7528\u8be5<\/span><code>reset<\/code><span>\u65b9\u6cd5\u3002<\/span><\/li>\n<\/ul>\n<p><strong><span>accountSearch.js\u00a0<\/span><\/strong><\/p>\n<ul>\n<li><span>\u7b2c5\u884c\uff1a\u8be5<\/span><code>handleChange<\/code><span>\u65b9\u6cd5\u8bfb\u53d6<\/span><code>lightning-input<\/code><span>\u7ec4\u4ef6\u7684<\/span><code>change<\/code><span>\u4e8b\u4ef6\uff0c\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u503c\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728<\/span><code>numberOfEmployees<\/code><span>\u5c5e\u6027\u4e2d\u3002<\/span><\/li>\n<li><span>\u7b2c7\u20139\u884c\uff1a<\/span><code>reset<\/code><span>\u65b9\u6cd5\u6e05\u7a7a<\/span><code>numberOfEmployees<\/code><span>\u5c5e\u6027\u3002\u901a\u5e38\uff0c\u6211\u4eec\u4f7f\u7528handleEventName\u7ea6\u5b9a\u6765\u547d\u540d\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\uff0c\u4f46\u662f\u5728<\/span><code>reset<\/code><span>\u8fd9\u91cc\u6211\u4eec\u7528\u6765\u5f3a\u8c03\u5b83\u4e0eApex\u63a7\u5236\u5668reset\u65b9\u6cd5\u7684\u76f8\u4f3c\u6027\u3002<\/span><\/li>\n<\/ul>\n<p><span>\u5c06\u4f20\u9012<\/span><code>value<\/code><span>\u7ed9<\/span><code>lightning-input<\/code><span>\u4f1a\u5bfc\u81f4\u7ec4\u4ef6\u91cd\u65b0\u5448\u73b0\u3002\u4e0eVisualforce\u5b9e\u73b0\u7684\u533a\u522b\u5728\u4e8e\uff0c\u91cd\u65b0\u6e32\u67d3\u53d1\u751f\u5728\u5ba2\u6237\u7aef\u4e0a\uff0c\u4ece\u800c\u907f\u514d\u4e86\u5bf9\u670d\u52a1\u5668\u7684\u989d\u5916\u8c03\u7528\u3002<\/span><\/p>\n<h2 id=\"respond-to-user-interactions\"><span>\u56de\u5e94\u7528\u6237\u4e92\u52a8<\/span><\/h2>\n<p><span>\u73b0\u5728\uff0c\u6211\u4eec\u5df2\u7ecf\u63a2\u7d22\u4e86Lightning Web Components\u548c\u60a8\u719f\u6089\u7684Visualforce\u5f00\u53d1\u4e4b\u95f4\u7684\u4e00\u4e9b\u533a\u522b\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u793a\u4f8b\u3002<\/span><\/p>\n<p><strong><span>\u5728\u4f60\u5f00\u59cb\u4e4b\u524d<\/span><\/strong><\/p>\n<p><span>Visualforce\u5f00\u53d1\u4eba\u5458\u975e\u5e38\u559c\u6b22\u5728\u5f00\u53d1\u4eba\u5458\u63a7\u5236\u53f0\u4e2d\u5de5\u4f5c\u3002\u4f46\u662f\uff0cLightning Web Components\u7684\u7f16\u7a0b\u6a21\u578b\u9700\u8981\u53e6\u4e00\u5957\u79f0\u4e3aSalesforce DX\uff08\u5f00\u53d1\u4eba\u5458\u4f53\u9a8c\uff09\u7684\u5f00\u53d1\u4eba\u5458\u5de5\u5177\u3002\u5b83\u5305\u62ecSalesforce\u547d\u4ee4\u884c\u754c\u9762\uff08CLI\uff09\u548cVisual Studio\u4ee3\u7801\uff0c\u8be5\u4ee3\u7801\u4e0eSalesforce Extension Pack\u4e00\u8d77\uff0c\u662f\u5728Salesforce\u5e73\u53f0\u4e0a\u5f00\u53d1\u7684\u63a8\u8350\u4ee3\u7801\u7f16\u8f91\u5668\u3002Salesforce DX\u73af\u5883\u65e8\u5728\uff1a<\/span><\/p>\n<ul>\n<li><span>\u7b80\u5316\u6574\u4e2a\u5f00\u53d1\u751f\u547d\u5468\u671f<\/span><\/li>\n<li><span>\u4fc3\u8fdb\u81ea\u52a8\u5316\u6d4b\u8bd5<\/span><\/li>\n<li><span>\u652f\u6301\u6301\u7eed\u96c6\u6210<\/span><\/li>\n<li><span>\u4f7f\u53d1\u5e03\u5468\u671f\u66f4\u52a0\u654f\u6377\u548c\u9ad8\u6548<\/span><\/li>\n<\/ul>\n<p><span>\u5728\u5f00\u59cb\u672c\u6a21\u5757\u7684\u52a8\u624b\u7ec3\u4e60\u548c\u52a8\u624b\u6311\u6218\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u60a8\u5df2\u5b8c\u6210\u300a\u00a0<\/span><span>\u5feb\u901f\u5165\u95e8\uff1a\u95ea\u7535Web\u7ec4\u4ef6\u300b<\/span><span>\u3002\u8be5\u5fbd\u7ae0\u7684\u524d\u4e24\u4e2a\u6b65\u9aa4\u5c06\u9010\u6b65\u8bbe\u7f6eSalesforce DX\u5f00\u53d1\u73af\u5883\u3002<\/span><\/p>\n<p><strong><span>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Trailhead\u6e38\u4e50\u573a<\/span><\/strong><\/p>\n<p><span>\u5bf9\u4e8e\u6b64\u9879\u76ee\uff0c\u60a8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Trailhead Playground\u3002\u6eda\u52a8\u5230\u8be5\u9875\u9762\u7684\u5e95\u90e8\uff0c\u5355\u51fb\u201c\u542f\u52a8\u201d\u65c1\u8fb9\u7684\u5411\u4e0b\u7bad\u5934\uff0c\u7136\u540e\u9009\u62e9\u201c<\/span><strong><span>\u521b\u5efaTrailhead\u6e38\u4e50\u573a\u201d<\/span><\/strong><span>\u3002\u521b\u5efa\u65b0\u7684Trailhead\u6e38\u4e50\u573a\u901a\u5e38\u9700\u89813-4\u5206\u949f\u3002<\/span><\/p>\n<p><strong><span>\u6ce8\u610f\uff1a<\/span><\/strong><span>\u662f\u7684\uff0c\u6211\u4eec\u7684\u610f\u601d\u662f\u5168\u65b0\u7684Trailhead\u6e38\u4e50\u573a\uff01\u5982\u679c\u60a8\u4f7f\u7528\u73b0\u6709\u7684\u7ec4\u7ec7\u6216\u6e38\u4e50\u573a\uff0c\u5219\u53ef\u80fd\u4f1a\u9047\u5230\u65e0\u6cd5\u5b8c\u6210\u6311\u6218\u7684\u95ee\u9898\u3002<\/span><\/p>\n<p><strong><span>\u83b7\u53d6\u60a8\u7684Trailhead Playground\u7528\u6237\u540d\u548c\u5bc6\u7801<\/span><\/strong><\/p>\n<p><span>\u8f6c\u5230\u60a8\u7684Trailhead\u6e38\u4e50\u573a\u3002\uff08\u5982\u679c\u5c1a\u672a\u6253\u5f00\uff0c\u8bf7\u6eda\u52a8\u81f3\u8be5\u9875\u9762\u7684\u5e95\u90e8\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u542f\u52a8<\/span><\/strong><span>\u3002\uff09\u5982\u679c\u60a8\u5728\u7ec4\u7ec7\u4e2d\u770b\u5230\u4e00\u4e2a\u6807\u7b7e\u4e3aGet Your Login Credentials\u7684\u6807\u7b7e\uff0c\u592a\u597d\u4e86\uff01\u8df3\u81f3\u6b65\u9aa41\u3002\u00a0<\/span><\/p>\n<p><span>\u5426\u5219\uff0c\u8bf7\u4ece\u5e94\u7528\u542f\u52a8\u5668\uff08<\/span><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/modules\/lwc-for-visualforce-developers\/handle-user-actions-in-javascript\/images\/7af94811d2d6b1451a80fbbd35055ca6_381-da-514-7002-4-a-6-b-b-6-b-0-5640-dc-198422.png\" alt=\"\u5e94\u7528\u542f\u52a8\u5668\" width=\"20\" height=\"21\" \/><span>\uff09\u4e2d\u627e\u5230\u5e76\u6253\u5f00Playground Starter\uff0c\u7136\u540e\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\u3002\u5982\u679c\u60a8\u6ca1\u6709\u770b\u5230Playground Starter\u5e94\u7528\u7a0b\u5e8f\uff0c\u8bf7\u5728Trailhead\u5e2e\u52a9\u4e2d\u7b7e\u51fa\u00a0<\/span><span>\u67e5\u627eTrailhead Playground\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801<\/span><span>\u3002<\/span><\/p>\n<ol>\n<li><span>\u5355\u51fb<\/span><strong><span>\u83b7\u53d6\u60a8\u7684\u767b\u5f55\u51ed\u636e<\/span><\/strong><span>\u9009\u9879\u5361\uff0c\u5e76\u8bb0\u4e0b\u60a8\u7684\u7528\u6237\u540d\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>\u91cd\u7f6e\u6211\u7684\u5bc6\u7801<\/span><\/strong><span>\u3002\u8fd9\u4f1a\u5c06\u7535\u5b50\u90ae\u4ef6\u53d1\u9001\u5230\u4e0e\u60a8\u7684\u7528\u6237\u540d\u5173\u8054\u7684\u5730\u5740\u3002<\/span><\/li>\n<li><span>\u5355\u51fb\u7535\u5b50\u90ae\u4ef6\u4e2d\u7684\u94fe\u63a5\u3002<\/span><\/li>\n<li><span>\u8f93\u5165\u65b0\u5bc6\u7801\uff0c\u786e\u8ba4\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u66f4\u6539\u5bc6\u7801<\/span><\/strong><span>\u3002<\/span><\/li>\n<\/ol>\n<p><span>\u51c6\u5907\u597d\u52a8\u624b\u4e86\u5417\uff1f\u6211\u4eec\u8d70\u5427\u3002<\/span><\/p>\n<p><span>\u5728\u672c\u7ec3\u4e60\u4e2d\uff0c\u60a8\u5c06\u521b\u5efa\u4e00\u4e2aLightning Web\u7ec4\u4ef6\uff0c\u4ee5\u54cd\u5e94\u7528\u6237\u4ea4\u4e92\u800c\u91cd\u65b0\u6e32\u67d3\u3002<\/span><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><span>\u521b\u5efa\u4e00\u4e2a\u65b0\u9879\u76ee\uff1a<\/span>\n<ol>\n<li><span>\u6253\u5f00Visual Studio\u4ee3\u7801\u3002<\/span><\/li>\n<li><span>\u6253\u5f00\u547d\u4ee4\u9762\u677f\uff1a\u5355\u51fb<\/span><strong><span>\u67e5\u770b<\/span><\/strong><span>|\u00a0<\/span><strong><span>\u547d\u4ee4\u9762\u677f<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5728\u547d\u4ee4\u9762\u677f\u4e2d\uff0c\u9009\u62e9<\/span><strong><span>SFDX\uff1a\u521b\u5efa\u9879\u76ee<\/span><\/strong><span>\u3002\uff08\u5982\u679c\u60a8\u6ca1\u6709\u5728\u5217\u8868\u4e2d\u770b\u5230\u5b83\uff0c\u8bf7\u952e\u5165<\/span><code>SFDX: Create Project<\/code><span>\uff0c\u7136\u540e\u6309<\/span><strong><span>Enter<\/span><\/strong><span>\u3002\uff09<\/span><\/li>\n<li><span>\u63a5\u53d7\u6807\u51c6\u6a21\u677f\u3002<\/span><\/li>\n<li><span>\u8f93\u5165\u9879\u76ee\u540d\u79f0\uff0c<\/span><code>lwcForVisualforceDevs<\/code><span>\u7136\u540e\u6309Enter\u3002<\/span><\/li>\n<li><span>\u9009\u62e9\u65b0\u9879\u76ee\u7684\u4f4d\u7f6e\uff0c\u7136\u540e\u5355\u51fb\u201c<\/span><strong><span>\u521b\u5efa\u9879\u76ee\u201d<\/span><\/strong><span>\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u6388\u6743\u60a8\u7684Trailhead\u6e38\u4e50\u573a\uff1a<\/span>\n<ol>\n<li><span>\u5728\u547d\u4ee4\u9009\u9879\u677f\u4e2d\uff0c\u9009\u62e9\uff08\u6216\u8f93\u5165\uff09<\/span><strong><span>SFDX\uff1a\u6388\u6743\u7ec4\u7ec7<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u9009\u62e9<\/span><strong><span>\u751f\u4ea7\uff1alogin.salesforce.com<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5bf9\u4e8e\u522b\u540d\uff0c\u8bf7\u8f93\u5165<\/span><code>lwc_for_vf_devs<\/code><span>\uff0c\u7136\u540e\u6309<\/span><strong><span>Enter<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u4f7f\u7528\u60a8\u7684Trailhead Playground\u7528\u6237\u540d\u548c\u5bc6\u7801\u767b\u5f55\u3002<\/span><\/li>\n<li><span>\u767b\u5f55\u5230Trailhead Playground\u540e\uff0c\u5c06\u5176\u4fdd\u6301\u6253\u5f00\u72b6\u6001\u5e76\u8fd4\u56de\u5230Visual Studio Code\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u5728Visual Studio Code\u4e2d\uff0c\u6253\u5f00\u4e00\u4e2a\u7ec8\u7aef\u7a97\u53e3\uff1a<\/span><strong><span>\u5355\u51fbTerminal<\/span><\/strong><span>\u00a0|\u3002<\/span><strong><span>\u65b0\u822a\u7ad9\u697c<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5728\u7ec8\u7aef\u4e2d\uff0c\u5c06Trailhead Playground\u8bbe\u7f6e\u4e3a\u8be5\u9879\u76ee\u7684\u9ed8\u8ba4\u8bbe\u7f6e\uff1a\u8f93\u5165\u6b64\u547d\u4ee4\uff0c\u7136\u540e\u6309<\/span><strong><span>Enter<\/span><\/strong><span>\uff1a<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">sfdx config<span class=\"token operator\">:<\/span>set defaultusername<span class=\"token operator\">=<\/span>lwc_for_vf_devs\n<\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><span>\u521b\u5efa\u4e00\u4e2a\u95ea\u7535Web\u7ec4\u4ef6\uff1a<\/span>\n<ol>\n<li><span>\u5728\u201c\u8d44\u6e90\u7ba1\u7406\u5668\u201d\u7a97\u683c\u4e2d\uff0c\u5c55\u5f00\u201c\u00a0<\/span><strong><span>\u00a0force-app \/ main \/ default\u201d\u3002<\/span><\/strong><\/li>\n<li><span>\u53f3\u952e\u5355\u51fb<\/span><strong><span>lwc<\/span><\/strong><span>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u9009\u62e9<\/span><strong><span>SFDX\uff1aCreate Lightning Web Component<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u8f93\u5165\u7ec4\u4ef6\u540d\u79f0\uff0c<\/span><code>accountSearch<\/code><span>\u7136\u540e\u6309<\/span><strong><span>Enter\u952e<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u518d\u6b21\u6309<\/span><strong><span>Enter<\/span><\/strong><span>\u63a5\u53d7\u9ed8\u8ba4\u76ee\u5f55\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362accountSearch.html\u6587\u4ef6\u7684\u5185\u5bb9\uff1a<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>template<span class=\"token punctuation\">&gt;<\/span><\/span>\n  <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>card<span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>input\n          type<span class=\"token operator\">=<\/span><span class=\"token string\">\"number\"<\/span>\n          label<span class=\"token operator\">=<\/span><span class=\"token string\">\"Number of Employees\"<\/span>\n          value<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>numberOfEmployees<span class=\"token punctuation\">}<\/span>\n          onchange<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleChange<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>input<span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>button\n          label<span class=\"token operator\">=<\/span><span class=\"token string\">\"Reset\"<\/span>\n          onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>reset<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>button<span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>card<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>template<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><span>\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362accountSearch.js\u6587\u4ef6\u7684\u5185\u5bb9\uff1a<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">}<\/span> from <span class=\"token string\">'lwc'<\/span><span class=\"token punctuation\">;<\/span>\nexport <span class=\"token keyword\">default<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountSearch<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">{<\/span>\n    numberOfEmployees <span class=\"token operator\">=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token function\">handleChange<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>numberOfEmployees <span class=\"token operator\">=<\/span> event<span class=\"token punctuation\">.<\/span>detail<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token function\">reset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>numberOfEmployees <span class=\"token operator\">=<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><span>\u8981\u4f7f\u6b64\u7ec4\u4ef6\u5728\u7ec4\u7ec7\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u4e0a\u53ef\u7528\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362accountCreator.js-meta.xml\u6587\u4ef6\u7684\u5185\u5bb9\uff1a<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">?<\/span>xml version<span class=\"token operator\">=<\/span><span class=\"token string\">\"1.0\"<\/span> encoding<span class=\"token operator\">=<\/span><span class=\"token string\">\"UTF-8\"<\/span><span class=\"token operator\">?<\/span><span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">LightningComponentBundle<\/span> xmlns<span class=\"token operator\">=<\/span><span class=\"token string\">\"http:\/\/soap.sforce.com\/2006\/04\/metadata\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>apiVersion<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token number\">48.0<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>apiVersion<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>isExposed<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token boolean\">true<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>isExposed<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>targets<span class=\"token punctuation\">&gt;<\/span><\/span>\n        <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>target<span class=\"token punctuation\">&gt;<\/span><\/span>lightning__AppPage<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>target<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>targets<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span><span class=\"token class-name\">LightningComponentBundle<\/span><span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol>\n<li><span>\u4fdd\u5b58\u60a8\u7f16\u8f91\u7684\u4e09\u4e2a\u6587\u4ef6\uff1aaccountSearch.html\uff0caccountSearch.js\u548caccountSearch.js-meta.xml\u3002<\/span><\/li>\n<li><span>\u5c06\u9879\u76ee\u6587\u4ef6\u90e8\u7f72\u5230Trailhead Playground\uff1a\u53f3\u952e\u5355\u51fb<\/span><strong><span>lwc<\/span><\/strong><span>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u9009\u62e9<\/span><strong><span>SFDX\uff1a\u5c06\u6e90\u90e8\u7f72\u5230Org<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5982\u679c\u60a8\u7684Trailhead Playground\u5c1a\u672a\u6253\u5f00\uff0c\u8bf7\u6253\u5f00\u5b83\u3002\uff08\u5728\u547d\u4ee4\u9009\u9879\u677f\u4e2d\uff0c\u9009\u62e9\uff08\u6216\u8f93\u5165\uff09<\/span><strong><span>SFDX\uff1aOpen Default Org<\/span><\/strong><span>\u3002\uff09<\/span><\/li>\n<li><span>\u5728\u60a8\u7684Trailhead\u6e38\u4e50\u573a\u4e2d\uff0c\u70b9\u51fb\u00a0<\/span><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/modules\/lwc-for-visualforce-developers\/handle-user-actions-in-javascript\/images\/9afad35aa02e042718ea2b52d2b5e100_226-a-003-d-5-f-4-c-4297-8-c-53-e-2-fcb-322851-a.png\" alt=\"\u8bbe\u5b9a\" \/><span>\uff0c\u7136\u540e\u70b9\u51fb<\/span><strong><span>\u8bbe\u7f6e<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5728\u201c\u5feb\u901f\u67e5\u627e\u201d\u6846\u4e2d\uff0c\u8f93\u5165<\/span><code>Lightning App Builder<\/code><span>\uff0c\u7136\u540e\u9009\u62e9<\/span><strong><span>Lightning App Builder<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u95ea\u7535\u9875\u9762\uff1a<\/span>\n<ol>\n<li><span>\u70b9\u51fb<\/span><strong><span>\u65b0\u5efa<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u9009\u62e9<\/span><strong><span>\u5e94\u7528\u7a0b\u5e8f\u9875\u9762<\/span><\/strong><span>\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u4e0b\u4e00\u6b65<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5bf9\u4e8e\u6807\u7b7e\uff0c\u8f93\u5165<\/span><code>LWC Visualforce Devs<\/code><span>\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u4e0b\u4e00\u6b65<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5bf9\u4e8e\u5e03\u5c40\uff0c\u9009\u62e9<\/span><strong><span>Header\u548cLeft Sidebar<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u70b9\u51fb<\/span><strong><span>\u5b8c\u6210<\/span><\/strong><span>\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u5c06<\/span><strong><span>accountSearch<\/span><\/strong><span>\u7ec4\u4ef6\u62d6\u52a8\u5230\u9875\u9762\u4fa7\u680f\u3002<\/span><\/li>\n<li><span>\u4fdd\u5b58\u9875\u9762\u3002<\/span><\/li>\n<li><span>\u6fc0\u6d3b\u9875\u9762\uff1a<\/span>\n<ol>\n<li><span>\u70b9\u51fb<\/span><strong><span>\u6fc0\u6d3b<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u4fdd\u7559\u9ed8\u8ba4\u7684\u5e94\u7528\u7a0b\u5e8f\u540d\u79f0\uff08LWC Visualforce Devs\uff09\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u4fdd\u5b58<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5f53\u63d0\u793a\u60a8\u5c06\u9875\u9762\u6dfb\u52a0\u5230\u5bfc\u822a\u83dc\u5355\u65f6\uff0c\u70b9\u51fb<\/span><strong><span>\u5b8c\u6210<\/span><\/strong><span>\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u9000\u51faLightning 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