{"id":3310,"date":"2021-01-13T15:39:37","date_gmt":"2021-01-13T07:39:37","guid":{"rendered":"http:\/\/www.salesforcecrm.cn\/?p=3310"},"modified":"2021-01-13T15:39:37","modified_gmt":"2021-01-13T07:39:37","slug":"%e5%9c%a8%e9%97%aa%e7%94%b5web%e7%bb%84%e4%bb%b6%e4%b9%8b%e9%97%b4%e9%80%9a%e4%bf%a1-%e4%bb%8e%e5%ad%a9%e5%ad%90%e5%88%b0%e7%88%b6%e6%af%8d%e6%b2%9f%e9%80%9a","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3310","title":{"rendered":"\u5728\u95ea\u7535Web\u7ec4\u4ef6\u4e4b\u95f4\u901a\u4fe1 &#8211; \u4ece\u5b69\u5b50\u5230\u7236\u6bcd\u6c9f\u901a"},"content":{"rendered":"<h2 id=\"learning-objectives\"><span>\u5b66\u4e60\u76ee\u6807<\/span><\/h2>\n<p><span>\u5728\u6b64\u9879\u76ee\u4e2d\uff0c\u60a8\u5c06\uff1a<\/span><\/p>\n<ul>\n<li><span>\u6784\u5efa\u5f7c\u6b64\u901a\u4fe1\u7684Lightning Web\u7ec4\u4ef6\u3002<\/span><\/li>\n<li><span>\u4ece\u5b50\u7ec4\u4ef6\u4e0e\u5176\u7236\u7ec4\u4ef6\u8fdb\u884c\u901a\u4fe1\u3002<\/span><\/li>\n<li><span>\u4ece\u7236\u7ec4\u4ef6\u4e0e\u5b50\u7ec4\u4ef6\u8fdb\u884c\u901a\u4fe1\u3002<\/span><\/li>\n<li><span>\u4ece\u7ec4\u4ef6\u901a\u4fe1\u5230\u4e0d\u76f8\u5173\u7684\u7ec4\u4ef6\u3002<\/span><\/li>\n<\/ul>\n<p><span>\u8be5\u9879\u76ee\u662f\u4e3a\u5177\u6709\u4e00\u5b9a\u7684Lightning Web\u7ec4\u4ef6\u7ecf\u9a8c\u7684Salesforce\u5f00\u53d1\u4eba\u5458\u8bbe\u8ba1\u7684\u3002\u5982\u679c\u60a8\u8fd8\u4e0d\u719f\u6089Lightning Web\u7ec4\u4ef6\uff0c\u6211\u4eec\u5efa\u8bae\u60a8\u00a0\u5728\u7ee7\u7eed\u8fdb\u884c\u6b64\u9879\u76ee\u4e4b\u524d\uff0c\u5148\u5b8c\u6210<\/span><span>Build Lightning Web Components<\/span><span>\u8def\u5f84\u4e2d\u7684\u4e00\u4e9b\u6807\u5fd7\u00a0\u3002<\/span><\/p>\n<h2 id=\"how-components-communicate\"><span>\u7ec4\u4ef6\u5982\u4f55\u901a\u4fe1<\/span><\/h2>\n<p><span>\u5f53\u591a\u4e2aLightning Web\u7ec4\u4ef6\u7ec4\u6210\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u6211\u4eec\u901a\u5e38\u5e0c\u671b\u8fd9\u4e9b\u7ec4\u4ef6\u5171\u4eab\u4fe1\u606f\u3002\u6211\u4eec\u5982\u4f55\u4ece\u4e00\u4e2a\u7ec4\u4ef6\u4f20\u9012\u5230\u53e6\u4e00\u7ec4\u4ef6\u53d6\u51b3\u4e8e\u7ec4\u4ef6\u662f\u5426\u76f8\u5173\u4ee5\u53ca\u5982\u4f55\u5173\u8054\u3002\u53e6\u4e00\u4e2a\u7ec4\u4ef6\u5185\u90e8\u7684\u7ec4\u4ef6\u5c06\u521b\u5efa\u7236\u5b50\u5173\u7cfb\u3002\u7236\u6bcd\u4e0e\u5b69\u5b50\u4ea4\u6d41\u7684\u65b9\u5f0f\u4e0e\u5b69\u5b50\u4e0e\u7236\u6bcd\u4ea4\u6d41\u7684\u65b9\u5f0f\u4e0d\u540c\u3002\u8fd9\u4e9b\u90fd\u4e0e\u4e0d\u76f8\u5173\u7684\u7ec4\u4ef6\uff08\u72ec\u7acb\u7684DOM\u5b50\u6811\u4e2d\u7684\u7ec4\u4ef6\uff09\u76f8\u4e92\u901a\u4fe1\u7684\u65b9\u5f0f\u4e0d\u540c\u3002<\/span><\/p>\n<p><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/6bd71f51405a917dfbf0a227070b64a4_8-b-7-d-782-e-21-cb-4-ca-3-b-7-d-5-0-cc-8-da-8-d-1473.png\" alt=\"\u901a\u8baf\u7c7b\u578b\uff1a\u5b50\u5bf9\u7236\uff0c\u7236\u5b50\u5bf9\u4ee5\u53ca\u4e0d\u76f8\u5173\u7684\u7ec4\u4ef6\u3002\" \/><\/p>\n<p><span>\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\uff0c\u60a8\u5c06\u5728\u6bcf\u4e2a\u5173\u7cfb\u4e2d\u7684\u7ec4\u4ef6\u4e4b\u95f4\u5efa\u7acb\u901a\u4fe1\u3002\u00a0<\/span><\/p>\n<h2 id=\"before-you-begin\"><span>\u5728\u4f60\u5f00\u59cb\u4e4b\u524d<\/span><\/h2>\n<p><span>\u6211\u4eec\u5047\u8bbe\u60a8\u5df2\u7ecf\u8bbe\u7f6e\u4e86Salesforce DX\u5f00\u53d1\u73af\u5883\uff0c\u5e76\u4e14\u53ef\u4ee5\u8f7b\u677e\u5730\u4f7f\u7528\u5b83\u6765\u521b\u5efaLightning Web\u7ec4\u4ef6\u5e76\u5c06\u5176\u90e8\u7f72\u5230\u7ec4\u7ec7\u4e2d\u3002\u5982\u679c\u60a8\u8fd8\u4e0d\u719f\u6089\u6b64\u8fc7\u7a0b\uff0c<\/span><span>\u8bf7\u5148<\/span><span>\u5b8c\u6210\u201c\u00a0\u5feb\u901f\u5165\u95e8\uff1a\u95ea\u7535Web\u7ec4\u4ef6\u201d\u00a0\u9879\u76ee\uff0c\u7136\u540e\u518d\u7ee7\u7eed\u8fdb\u884c\u6b64\u9879\u76ee\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\u6e38\u4e50\u573a\u540d\u79f0\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u521b\u5efaTrailhead\u6e38\u4e50\u573a<\/span><\/strong><span>\u3002\u521b\u5efa\u65b0\u7684Trailhead\u6e38\u4e50\u573a\u901a\u5e38\u9700\u89813-4\u5206\u949f\u3002\u00a0<\/span><\/p>\n<p><span>\u6ce8\u610f\uff1a\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>\u8ba9\u6211\u4eec\u5f00\u59cb\u5427\u3002\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\u5426\u5219\uff0c\u8bf7\u4eceApp Launcher\uff08<\/span><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/0cfd12cf07754b6c3428a8b1d64325f9_icon_app_launcher.png\" alt=\"\u5e94\u7528\u542f\u52a8\u5668\" width=\"29\" \/><span>\uff09\u4e2d\u627e\u5230\u5e76\u6253\u5f00<\/span><strong><span>Playground Starter\uff0c<\/span><\/strong><span>\u7136\u540e\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\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\u00a0<\/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\u3002<\/span><\/strong><\/li>\n<\/ol>\n<p><strong><span>\u8bbe\u7f6e\u9879\u76ee<\/span><\/strong><\/p>\n<ol>\n<li><span>\u5728Visual Studio Code\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u7684Salesforce DX\u9879\u76ee<\/span><code>Event Comms<\/code><span>\u3002<\/span><\/li>\n<li><span>\u6388\u6743\u60a8\u7684Trailhead\u6e38\u4e50\u573a\u3002<\/span><\/li>\n<\/ol>\n<h2 id=\"communicate-with-a-custom-event\"><span>\u4e0e\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u8fdb\u884c\u4ea4\u6d41<\/span><\/h2>\n<p><span>\u8ba9\u6211\u4eec\u4ece\u4e00\u4e2a\u7b80\u5355\u7684\u573a\u666f\u5f00\u59cb\u3002\u5b50\u7ec4\u4ef6\u8c03\u5ea6\u4e00\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff0c\u8be5\u4e8b\u4ef6\u89e6\u53d1\u7236\u7ec4\u4ef6\u4e2d\u7684\u66f4\u65b0\u3002<\/span><\/p>\n<p><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/dc937f5a9a449605a5d325560f991141_dfbb-97-b-5-1432-461-a-b-627-bbb-1-eed-1354-b.png\" alt=\"\u4e00\u4e2a\u540d\u4e3acontrols\u7684\u5b50\u7ec4\u4ef6\u5305\u542b\u5728\u5176\u7236\u7ec4\u4ef6\uff08\u5206\u5b50\u7ec4\u4ef6\uff09\u4e2d\u5e76\u4e0e\u5176\u901a\u4fe1\u3002\" width=\"330\" \/><\/p>\n<p><span>\u53d1\u9001\u4e8b\u4ef6\u65f6\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u53d1\u9001\u4e00\u4e9b\u6570\u636e\uff0c\u5e76\u5141\u8bb8\u4e8b\u4ef6\u5728DOM\u4e2d\u5192\u6ce1\u3002\u8ba9\u6211\u4eec\u4ece\u4e00\u4e2a\u7b80\u5355\u7684\u573a\u666f\u5f00\u59cb\u3002\u5b50\u7ec4\u4ef6\u8c03\u5ea6\u4e00\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff0c\u8be5\u4e8b\u4ef6\u89e6\u53d1\u7236\u7ec4\u4ef6\u4e2d\u7684\u66f4\u65b0\u3002<\/span><\/p>\n<p><strong><span>\u4ece\u63a7\u4ef6\u7ec4\u4ef6\u4f20\u9012\u5230\u5206\u5b50\u7ec4\u4ef6<\/span><\/strong><\/p>\n<ol>\n<li><span>\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u4e09\u4e2a\u533a\u57df\u7684Lightning\u5e94\u7528\u7a0b\u5e8f\u9875\u9762<\/span><code>Event Comms<\/code><span>\uff1a<\/span>\n<ol>\n<li><span>\u5728\u60a8\u7684\u7ec4\u7ec7\uff08\u60a8\u7684Trailhead\u6e38\u4e50\u573a\uff09\u4e2d\uff0c\u6253\u5f00\u201c\u8bbe\u7f6e\u201d\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>\u70b9\u51fb<\/span><strong><span>\u65b0\u5efa<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u9009\u62e9\u201c\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u201d\u540e\uff0c\u5355\u51fb\u201c<\/span><strong><span>\u4e0b\u4e00\u6b65\u201d<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5bf9\u4e8e\u6807\u7b7e\uff0c\u8f93\u5165<\/span><code>Event Comms<\/code><span>\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u4e0b\u4e00\u6b65<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u9009\u62e9<\/span><strong><span>\u4e09\u4e2a\u533a\u57df<\/span><\/strong><span>\uff0c\u7136\u540e\u5355\u51fb<\/span><strong><span>\u5b8c\u6210<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>\u4fdd\u5b58<\/span><\/strong><span>\uff0c<\/span><strong><span>\u6fc0\u6d3b<\/span><\/strong><span>\uff0c<\/span><strong><span>\u4fdd\u5b58<\/span><\/strong><span>\u548c<\/span><strong><span>\u5b8c\u6210<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/f2dae0bfede98c60d8a7826592d6d7ab_icon_app_builder_back.png\" alt=\"\u80cc\u90e8\" width=\"30\" \/><span>\u00a0\u4ee5\u9000\u51faLightning App Builder\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u521b\u5efa\u540d\u4e3a\u7684\u7236Lightning Web\u7ec4\u4ef6<\/span><code>numerator<\/code><span>\uff1a<\/span>\n<ol>\n<li><span>\u5728Visual Studio Code\u4e2d\u7684<\/span><strong><span>force-app \/ main \/ default\u4e0b<\/span><\/strong><span>\uff0c\u53f3\u952e\u5355\u51fb\u00a0<\/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<\/span><code>numerator<\/code><span>\u65b0\u7ec4\u4ef6\u7684\u540d\u79f0\u3002<\/span><\/li>\n<li><span>\u6309<\/span><strong><span>Enter<\/span><\/strong><span>\uff0c\u7136\u540e\u518d\u6b21\u6309<\/span><strong><span>Enter<\/span><\/strong><span>\u63a5\u53d7\u9ed8\u8ba4\u503c<\/span><code>force-app\/main\/default\/lwc<\/code><span>\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u7f16\u5199\u5206\u5b50\u7ec4\u4ef6\u6587\u4ef6\u7684\u4ee3\u7801\uff1a<\/span>\n<ol>\n<li><span>\u5728<\/span><strong><span>numerator.js\u4e2d<\/span><\/strong><span>\uff0c\u5c06\u6b64\u4ee3\u7801\u7c98\u8d34\u5230<\/span><code>Numerator<\/code><span>\u7c7b\u4e2d\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  counter <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n  \n  <span class=\"token function\">handleIncrement<\/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>counter<span class=\"token operator\">++<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n  <span class=\"token function\">handleDecrement<\/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>counter<span class=\"token operator\">--<\/span><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<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>numerator.html\uff0c<\/span><\/strong><span>\u5e76\u5728<\/span><code>template<\/code><span>\u6807\u7b7e\u4e4b\u95f4\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\u00a0\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>card title<span class=\"token operator\">=<\/span><span class=\"token string\">\"Numerator\"<\/span> icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token string\">\"action:manage_perm_sets\"<\/span><span class=\"token operator\">&gt;<\/span>    \n    <span class=\"token operator\">&lt;<\/span>p <span class=\"token keyword\">class<\/span><span class=\"token operator\">=<\/span><span class=\"token string\">\"slds-text-align_center slds-var-m-vertical_medium\"<\/span><span class=\"token operator\">&gt;<\/span>\n      <span class=\"token class-name\">Count<\/span><span class=\"token operator\">:<\/span> <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>formatted<span class=\"token operator\">-<\/span>number value<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>counter<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>formatted<span class=\"token operator\">-<\/span>number<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">!<\/span><span class=\"token operator\">--<\/span> controls go here <span class=\"token operator\">--<\/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>card<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u8981\u4f7f\u5206\u5b50\u7ec4\u4ef6\u5728Lightning\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u4e2d\u53ef\u7528\uff0c\u8bf7\u6253\u5f00\u00a0<\/span><strong><span>numerator.js-meta.xml<\/span><\/strong><span>\u5e76<\/span><code>isExposed<\/code><span>\u00a0\u7528\u4ee5\u4e0b<strong>\u51e0<\/strong>\u884c\u66ff\u6362\u6807\u8bb0\uff1a<\/span>\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>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><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u5c06\u5206\u5b50\u7ec4\u4ef6\u6dfb\u52a0\u5230Event Comms\u5e94\u7528\u7a0b\u5e8f\uff1a<\/span>\n<ol>\n<li><span>\u53f3\u952e\u5355\u51fb<\/span><strong><span>lwc<\/span><\/strong><span>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u9009\u62e9\u00a0<\/span><strong><span>SFDX\uff1a\u5c06\u6e90\u90e8\u7f72\u5230\u7ec4\u7ec7<\/span><\/strong><span>\u5c06lwc\u6587\u4ef6\u5939\u90e8\u7f72\u5230\u60a8\u7684\u7ec4\u7ec7\u3002<\/span><\/li>\n<li><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/0cfd12cf07754b6c3428a8b1d64325f9_icon_app_launcher.png\" alt=\"\u5e94\u7528\u542f\u52a8\u5668\" width=\"29\" \/><span>\u5728\u60a8\u64cd\u573a\u4e0a\u7684App Launcher\uff08\uff09\u4e2d\uff0c\u627e\u5230\u5e76\u6253\u5f00<\/span><strong><span>Event Comms<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5355\u51fb\u00a0<\/span><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/c094499b444e5ebd7082d703d0d3471c_icon_setup.png\" alt=\"\u8bbe\u5b9a\" width=\"30\" \/><span>\u00a0\u5e76\u9009\u62e9<\/span><strong><span>\u7f16\u8f91\u9875\u9762<\/span><\/strong><span>\u4ee5\u6253\u5f00Event Comms\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u8fdb\u884c\u7f16\u8f91\u3002<\/span><\/li>\n<li><span>\u5c06<\/span><strong><span>\u5206\u5b50<\/span><\/strong><span>\u7ec4\u4ef6\uff08\u5728\u201c\u7ec4\u4ef6\u201d\u5217\u8868\u4e2d\u7684\u201c\u81ea\u5b9a\u4e49\u201d\u4e0b\uff09\u62d6\u5230\u9875\u9762\u7684\u5de6\u4fa7\u533a\u57df\u3002<\/span><\/li>\n<li><span>\u70b9\u51fb<\/span><strong><span>\u4fdd\u5b58<\/span><\/strong><span>\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/f2dae0bfede98c60d8a7826592d6d7ab_icon_app_builder_back.png\" alt=\"\u80cc\u90e8\" width=\"30\" \/><span>\u00a0\u4ee5\u9000\u51faLightning App Builder\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u521b\u5efa\u5e76\u7f16\u5199\u540d\u4e3a\u7684\u5b50\u7ec4\u4ef6<\/span><code>controls<\/code><span>\uff1a<\/span>\n<ol>\n<li><span>\u8fd4\u56deVisual Studio Code\u5e76\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u7684Lightning Web\u7ec4\u4ef6\u00a0<\/span><code>controls<\/code><span>\u3002<\/span><\/li>\n<li><span>\u5728<\/span><strong><span>controls.js\u4e2d<\/span><\/strong><span>\uff0c\u5c06\u6b64\u4ee3\u7801\u7c98\u8d34\u5230<\/span><code>Controls<\/code><span>\u7c7b\u4e2d\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token function\">handleAdd<\/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><span class=\"token function\">dispatchEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'add'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token punctuation\">}<\/span>\n  <span class=\"token function\">handleSubtract<\/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><span class=\"token function\">dispatchEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'subtract'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><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<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>controls.html\uff0c<\/span><\/strong><span>\u5e76\u5728<\/span><code>template<\/code><span>\u6807\u7b7e\u4e4b\u95f4\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\u00a0\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>card title<span class=\"token operator\">=<\/span><span class=\"token string\">\"Controls\"<\/span> icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token string\">\"action:upload\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>layout<span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>layout<span class=\"token operator\">-<\/span>item flexibility<span class=\"token operator\">=<\/span><span class=\"token string\">\"auto\"<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token string\">\"around-small\"<\/span><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\">\"Subtract\"<\/span>\n          icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token string\">\"utility:dash\"<\/span>\n          onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleSubtract<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>layout<span class=\"token operator\">-<\/span>item<span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>layout<span class=\"token operator\">-<\/span>item flexibility<span class=\"token operator\">=<\/span><span class=\"token string\">\"auto\"<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token string\">\"around-small\"<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">!<\/span><span class=\"token operator\">--<\/span> buttons go here <span class=\"token operator\">--<\/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>layout<span class=\"token operator\">-<\/span>item<span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>layout<span class=\"token operator\">-<\/span>item flexibility<span class=\"token operator\">=<\/span><span class=\"token string\">\"auto\"<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token string\">\"around-small\"<\/span><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\">\"Add\"<\/span>\n          icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token string\">\"utility:add\"<\/span>\n          onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleAdd<span class=\"token punctuation\">}<\/span>\n          icon<span class=\"token operator\">-<\/span>position<span class=\"token operator\">=<\/span><span class=\"token string\">\"right\"<\/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>layout<span class=\"token operator\">-<\/span>item<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>layout<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><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u5c06\u5b50\u7ec4\u4ef6\uff08\u63a7\u4ef6\uff09\u6dfb\u52a0\u5230\u7236\u7ec4\u4ef6\uff08\u5206\u5b50\uff09\uff1a<\/span>\n<ol>\n<li><span>\u6253\u5f00<\/span><strong><span>numerator.html<\/span><\/strong><span>\u5e76<\/span><code>controls go here<\/code><span>\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362\u00a0\u6ce8\u91ca\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">    <span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">-<\/span>controls\n      <span class=\"token keyword\">class<\/span><span class=\"token operator\">=<\/span><span class=\"token string\">\"slds-show slds-is-relative\"<\/span>\n      onadd<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleIncrement<span class=\"token punctuation\">}<\/span>\n      onsubtract<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleDecrement<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>c<span class=\"token operator\">-<\/span>controls<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u9a8c\u8bc1\u901a\u8baf\uff1a<\/span>\n<ol>\n<li><span>\u8981\u67e5\u770bSalesforce\u4e2d\u7684\u66f4\u6539\uff0c\u8bf7\u90e8\u7f72<\/span><strong><span>lwc<\/span><\/strong><span>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5237\u65b0Trailhead Playground\u7ec4\u7ec7\u4e2d\u7684Event Comms\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>\u6dfb\u52a0\uff0c<\/span><\/strong><span>\u7136\u540e\u67e5\u770b\u8ba1\u6570\u589e\u52a0\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>\u51cf<\/span><\/strong><span>\u4ee5\u67e5\u770b\u8ba1\u6570\u51cf\u5c11\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><span>\u73b0\u5728\uff0c\u6211\u4eec\u6709\u4e86\u4e00\u4e2a\u5b50\u7ec4\u4ef6\uff08\u63a7\u4ef6\uff09\uff0c<\/span><code>add<\/code><span>\u8be5\u7ec4\u4ef6\u5c06\u4e8b\u4ef6\u53d1\u9001\u5230\u7236\u7ec4\u4ef6\uff08\u5206\u5b50\uff09\uff0c\u4ece\u800c\u89e6\u53d1\u7236\u7ec4\u4ef6\uff08\u5206\u5b50\uff09\u4e2d\u7684<\/span><code>handleIncrement<\/code><span>\u51fd\u6570\u3002<\/span><\/p>\n<p><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/dcec94a3e798ab96f932ddc499d85e3e_fd-44-eafa-00-b-7-4356-b-010-d-3-f-75-add-70-c-6.png\" alt=\"\u4e0e\u524d\u9762\u7684\u63cf\u8ff0\u76f8\u5bf9\u5e94\u7684\u56fe\u3002\" width=\"330\" \/><\/p>\n<h2 id=\"send-data-with-the-custom-event\"><span>\u4f7f\u7528\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u53d1\u9001\u6570\u636e<\/span><\/h2>\n<p><span>\u63a5\u4e0b\u6765\uff0c\u8ba9\u5b69\u5b50\u5c06\u5e26\u6709\u4e8b\u4ef6\u7684\u4e00\u4e9b\u6570\u636e\u4f20\u9012\u7ed9\u7236\u6bcd\u3002\u8be5\u4f01\u4e1a\u5e0c\u671b\u589e\u52a0\u6570\u91cf\u3002\u6211\u4eec\u5c06\u4e3a\u4ed6\u4eec\u63d0\u4f9b\u591a\u79cd\u9009\u62e9\u3002\u4f7f\u7528\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u5c06\u6570\u636e\u4ece\u5b50\u7ea7\u4f20\u9012\u5230\u7236\u7ea7\u3002<\/span><\/p>\n<ol>\n<li><span>\u5411\u5b50\u7ec4\u4ef6\uff08\u63a7\u4ef6\uff09\u6dfb\u52a0\u4e58\u6cd5\u6309\u94ae\u548c\u4e58\u6cd5\u529f\u80fd\uff1a<\/span>\n<ol>\n<li><span>\u6253\u5f00<\/span><strong><span>controls.html\uff0c<\/span><\/strong><span>\u5e76\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362<\/span><code>buttons go here<\/code><span>\u00a0\u7b2c\u4e8c\u4e2a<\/span><code>lightning-layout-item<\/code><span>\u6807\u7b7e\u5185\u7684\u6ce8\u91ca\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">      <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>button\n        label<span class=\"token operator\">=<\/span><span class=\"token string\">\"2\"<\/span>\n        data<span class=\"token operator\">-<\/span>factor<span class=\"token operator\">=<\/span><span class=\"token string\">\"2\"<\/span>\n        icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token string\">\"utility:close\"<\/span>\n        onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleMultiply<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>lightning<span class=\"token operator\">-<\/span>button\n        label<span class=\"token operator\">=<\/span><span class=\"token string\">\"3\"<\/span>\n        data<span class=\"token operator\">-<\/span>factor<span class=\"token operator\">=<\/span><span class=\"token string\">\"3\"<\/span>\n        icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token string\">\"utility:close\"<\/span>\n        onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleMultiply<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><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>controls.js\uff0c<\/span><\/strong><span>\u5e76\u5728<\/span><code>handleMultiply<\/code><span>\u00a0\u51fd\u6570\u540e\u6dfb\u52a0\u4ee5\u4e0b<\/span><code>handleSubtract<\/code><span>\u51fd\u6570\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token function\">handleMultiply<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">const<\/span> factor <span class=\"token operator\">=<\/span> event<span class=\"token punctuation\">.<\/span>target<span class=\"token punctuation\">.<\/span>dataset<span class=\"token punctuation\">.<\/span>factor<span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">dispatchEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'multiply'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span>\n      detail<span class=\"token operator\">:<\/span> factor\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><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<p><span>\u6ce8\u610f\uff0c\u6211\u4eec\u5c06<\/span><code>onclick<\/code><span>\u4e8b\u4ef6\u4f20\u9012\u7ed9<\/span><code>handleMultiply<\/code><span>\u51fd\u6570\uff0c\u51fd\u6570<\/span><code>data-factor<\/code><span>\u901a\u8fc7\u00a0\u6765\u83b7\u53d6\u6309\u94ae<\/span><code>event.target.dataset.factor<\/code><span>\u3002\u7136\u540e\uff0c\u5c06<\/span><code>factor<\/code><span>\u4ee5\u53ca\u65b0\u7684\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff08<\/span><code>multiply<\/code><span>\uff09\u4f20\u9012\u7ed9\u7236\u7ec4\u4ef6\uff08\u5206\u5b50\uff09\u3002<\/span><\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u66f4\u65b0\u7236\u7ec4\u4ef6\uff08\u5206\u5b50\uff09\uff1a<\/span>\n<ol>\n<li><span>\u6253\u5f00<\/span><strong><span>numerator.html<\/span><\/strong><span>\u5e76\u5c06\u6b64\u5c5e\u6027\u6dfb\u52a0\u5230\u00a0<\/span><code>c-controls<\/code><span>\u6807\u8bb0\u4e2d\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">onmultiply<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleMultiply<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>numerator.js<\/span><\/strong><span>\u5e76\u5c06\u6b64<\/span><code>handleMultiply<\/code><span>\u00a0\u51fd\u6570\u6dfb\u52a0\u5230\u8be5\u51fd\u6570\u4e4b\u540e<\/span><code>handleDecrement<\/code><span>\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token function\">handleMultiply<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">const<\/span> factor <span class=\"token operator\">=<\/span> event<span class=\"token punctuation\">.<\/span>detail<span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>counter <span class=\"token operator\">*=<\/span> factor<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<p><span>\u6b64\u5904\uff0c<\/span><code>handleMultiply<\/code><span>\u51fd\u6570\u83b7\u53d6<\/span><code>onmultiply<\/code><span>\u00a0\u4f20\u5165\u7684\u4e8b\u4ef6\uff0c\u5e76\u4f7f\u7528\u5176\u6570\u636e\uff08<\/span><code>event.detail<\/code><span>\uff09\u66f4\u65b0\u8ba1\u6570\uff08\u8ba1\u6570\u5668\uff09\u3002<\/span><\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u9a8c\u8bc1\u901a\u8baf\uff1a<\/span>\n<ol>\n<li><span>\u8981\u67e5\u770bSalesforce\u4e2d\u7684\u66f4\u6539\uff0c\u8bf7\u90e8\u7f72<\/span><strong><span>lwc<\/span><\/strong><span>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5237\u65b0Event Comms\u5e94\u7528\u7a0b\u5e8f\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>\u6dfb\u52a0\uff0c<\/span><\/strong><span>\u7136\u540e\u67e5\u770b\u8ba1\u6570\u589e\u52a0\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>X 2<\/span><\/strong><span>\u4ee5\u67e5\u770b\u8ba1\u6570\u4e58\u4ee52\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>X 3<\/span><\/strong><span>\u4ee5\u67e5\u770b\u8ba1\u6570\u4e58\u4ee53\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><span>\u63a7\u4ef6\u7ec4\u4ef6\u5c06\u6570\u636e\uff08<\/span><code>data-factor<\/code><span>\uff09\u4ee5\u53ca<\/span><code>multiply<\/code><span>\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u4f20\u9012\u5230\u5176\u7236\u7ea7\uff08\u5206\u5b50\uff09\u3002<\/span><\/p>\n<p><img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/91c8a5ec0d2b68ef1c73feb043a2ea43_f-063-f-608-913-e-4-ed-6-91-cb-c-6097-c-74-a-53-a.png\" alt=\"\u4e0e\u524d\u9762\u7684\u63cf\u8ff0\u76f8\u5bf9\u5e94\u7684\u56fe\u3002\" width=\"330\" \/><\/p>\n<h2 id=\"allow-custom-events-to-bubble\"><span>\u5141\u8bb8\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u5192\u6ce1<\/span><\/h2>\n<p><span>\u4e24\u4e2a\u4e58\u6cd5\u6309\u94ae\u6210\u529f\u4e86\u3002\u73b0\u5728\uff0c\u4f01\u4e1a\u9700\u8981\u66f4\u591a\u7684\u4e58\u6cd5\u9009\u62e9\u3002\u8ba9\u6211\u4eec\u8f7b\u677e\u6dfb\u52a0\u6240\u9700\u6570\u91cf\u7684\u6309\u94ae\u3002\u6211\u4eec\u5c06\u4e3a\u6309\u94ae\u6dfb\u52a0\u53e6\u4e00\u4e2aLightning Web\u7ec4\u4ef6\u3002\u4e3a\u4e86\u4f7f\u901a\u4fe1\u987a\u5229\u8fdb\u884c\uff0c\u60a8\u5c06\u4f7f\u7528\u4e8b\u4ef6\u5192\u6ce1\u3002\u5192\u6ce1\u5141\u8bb8\u6765\u81ea\u6309\u94ae\u7ec4\u4ef6\u7684\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u5192\u6ce1DOM\u6811\u3002<\/span><\/p>\n<ol>\n<li><span>\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u7684\u7ec4\u4ef6<\/span><code>button<\/code><span>\uff1a<\/span>\n<ol>\n<li><span>\u521b\u5efa\u540d\u4e3a\u7684Lightning Web\u7ec4\u4ef6<\/span><code>button<\/code><span>\u3002<\/span><\/li>\n<li><span>\u5728<\/span><strong><span>button.js\u4e2d<\/span><\/strong><span>\uff0c\u5c06\u6b64\u4ee3\u7801\u7c98\u8d34\u5230<\/span><code>Button<\/code><span>\u7c7b\u4e2d\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token annotation punctuation\">@api<\/span> label<span class=\"token punctuation\">;<\/span>\n  <span class=\"token annotation punctuation\">@api<\/span> icon<span class=\"token punctuation\">;<\/span>\n  \n  <span class=\"token function\">handleButton<\/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><span class=\"token function\">dispatchEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'buttonclick'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">{<\/span>\n      <span class=\"token comment\">\/\/ bubbles: true<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><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<\/li>\n<li><code>api<\/code><span>\u4ece<\/span><code>lwc<\/code><span>\u6a21\u5757\u5bfc\u5165\u88c5\u9970\u5668\u3002<\/span>\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> api <span class=\"token punctuation\">}<\/span> from <span class=\"token string\">'lwc'<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>button.html<\/span><\/strong><span>\u5e76\u5728<\/span><code>template<\/code><span>\u6807\u7b7e\u4e4b\u95f4\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\u00a0\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>button\n    label<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>label<span class=\"token punctuation\">}<\/span>\n    data<span class=\"token operator\">-<\/span>factor<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>label<span class=\"token punctuation\">}<\/span>\n    icon<span class=\"token operator\">-<\/span>name<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>icon<span class=\"token punctuation\">}<\/span>\n    onclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleButton<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><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u4f7f\u6309\u94ae\u7ec4\u4ef6\u6210\u4e3a\u63a7\u4ef6\u7ec4\u4ef6\u7684\u5b50\u7ec4\u4ef6\uff1a<\/span>\n<ol>\n<li><span>\u6253\u5f00<\/span><strong><span>controls.html<\/span><\/strong><span>\u5e76\u5220\u9664\u00a0<\/span><code>lightning-layout-item<\/code><span>\u5305\u542b\u4e24\u4e2a\u00a0<\/span><code>lightning-button<\/code><span>\u6807\u7b7e\u7684\u3002<\/span><\/li>\n<li><span>\u66ff\u6362\u4e3a\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">    <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">-<\/span>layout<span class=\"token operator\">-<\/span>item flexibility<span class=\"token operator\">=<\/span><span class=\"token string\">\"auto\"<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token string\">\"around-small\"<\/span> onbuttonclick<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleMultiply<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n      <span class=\"token operator\">&lt;<\/span>template <span class=\"token keyword\">for<\/span><span class=\"token operator\">:<\/span>each<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>factors<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">for<\/span><span class=\"token operator\">:<\/span>item<span class=\"token operator\">=<\/span><span class=\"token string\">\"factor\"<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">-<\/span>button\n          key<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>factor<span class=\"token punctuation\">}<\/span>\n          label<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>factor<span class=\"token punctuation\">}<\/span>\n          data<span class=\"token operator\">-<\/span>factor<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>factor<span class=\"token punctuation\">}<\/span>\n          icon<span class=\"token operator\">=<\/span><span class=\"token string\">\"utility:close\"<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>c<span class=\"token operator\">-<\/span>button<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>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>lightning<span class=\"token operator\">-<\/span>layout<span class=\"token operator\">-<\/span>item<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<p><span>\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u5df2\u5c06<\/span><code>handleMultiply<\/code><span>\u51fd\u6570\u8c03\u7528\u79fb\u81f3\u4e2d\u7684\u00a0<\/span><code>onbuttonclick<\/code><span>\u5904\u7406\u7a0b\u5e8f<\/span><code>lightning-layout-item<\/code><span>\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5728\u6bcf\u4e2a\u6309\u94ae\u4e0a\u6dfb\u52a0\u5904\u7406\u7a0b\u5e8f\uff0c\u4ece\u800c\u4f7f\u4ee3\u7801\u66f4\u5e72\u51c0\uff0c\u66f4\u5feb\u3002<\/span><\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>controls.js<\/span><\/strong><span>\u5e76\u5c06\u6b64<\/span><code>factors<\/code><span>\u5c5e\u6027\u6dfb\u52a0\u5230\u00a0<\/span><code>Controls<\/code><span>\u7c7b\u4e2d\uff1a<\/span>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">  factors <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<li><span>\u9a8c\u8bc1\u901a\u8baf\uff1a<\/span>\n<ol>\n<li><span>\u8981\u67e5\u770bSalesforce\u4e2d\u7684\u66f4\u6539\uff0c\u8bf7\u90e8\u7f72<\/span><strong><span>lwc<\/span><\/strong><span>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5237\u65b0Event Comms\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>\u6dfb\u52a0\uff0c<\/span><\/strong><span>\u7136\u540e\u67e5\u770b\u8ba1\u6570\u589e\u52a0\u3002\u00a0<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>X 2<\/span><\/strong><span>\uff0c\u8bf7\u6ce8\u610f\u6ca1\u6709\u4efb\u4f55\u53cd\u5e94\u3002\u4e3a\u4ec0\u4e48\uff1f\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u4e0d\u4f1a\u5728\u6d3e\u53d1\u8be5\u4e8b\u4ef6\u7684\u7ec4\u4ef6\u4e0a\u5192\u6ce1\u3002<\/span><br \/>\n<img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/e5bd4d60bfec9bfef3434990eee823f4_e-10-e-618-e-7-ea-6-473-c-90-ae-342-e-2-e-85-c-89-f.png\" alt=\"\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u672a\u901a\u8fc7\u5176\u5bb9\u5668\u3002\" width=\"330\" \/><br \/>\n<span>\u4e3a\u4f7f\u4e8b\u4ef6\uff08<\/span><code>buttonclick<\/code><span>\uff09\u4e0a\u5347\u5230\u00a0<\/span><code>lightning-layout-item<\/code><span>\uff0c\u6211\u4eec<\/span><code>bubbles: true<\/code><span>\u5728\u4e2d\u00a0\u6dfb\u52a0<\/span><code>CustomEvent<\/code><span>\u3002<\/span><\/li>\n<li><span>\u6253\u5f00<\/span><strong><span>button.js<\/span><\/strong><span>\u5e76\u53d6\u6d88\u6ce8\u91ca\uff08\u5220\u9664<\/span><code>\/\/<\/code><span>\u4e4b\u524d\u7684\u5185\u5bb9\uff09\u00a0<\/span><code>bubbles: true<\/code><span>\u3002<\/span><br \/>\n<img decoding=\"async\" class=\"image\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/communicate-between-lightning-web-components\/communicate-from-child-to-parent\/images\/d494898fe2cba38fa8bc84f43b439d3a_118-e-0-b-9-b-28-f-9-4-a-99-bab-9-4-a-4381089-cfe.png\" alt=\"\u73b0\u5728\uff0c\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u5192\u8d77\u4e86\u5b83\u7684\u5bb9\u5668\u3002\" width=\"330\" \/><\/li>\n<li><span>\u4fdd\u5b58\u6587\u4ef6\u5e76\u518d\u6b21\u90e8\u7f72\u3002<\/span><\/li>\n<li><span>\u5237\u65b0\u4e8b\u4ef6\u901a\u8baf\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u3002<\/span><\/li>\n<li><span>\u73b0\u5728\u5355\u51fb<\/span><strong><span>\u6dfb\u52a0<\/span><\/strong><span>\u5c06\u8ba1\u6570\u8bbe\u7f6e\u4e3a1\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>X 2<\/span><\/strong><span>\u4ee5\u67e5\u770b\u8ba1\u6570\u4e58\u4ee52\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>X 6<\/span><\/strong><span>\u4ee5\u67e5\u770b\u8ba1\u6570\u4e58\u4ee56\u3002<\/span><\/li>\n<li><span>\u5355\u51fb<\/span><strong><span>X 0<\/span><\/strong><span>\u5c06\u8ba1\u6570\u91cd\u7f6e\u4e3a\u96f6\u3002<\/span><\/li>\n<li><span>\u5c1d\u8bd5\u4ee5\u4e0b\u5355\u51fb\uff1a<\/span><strong><span>\u6dfb\u52a0<\/span><\/strong><span>\uff0c<\/span><strong><span>X 2<\/span><\/strong><span>\uff0c<\/span><strong><span>X 5<\/span><\/strong><span>\uff0c\u00a0<\/span><strong><span>X 2<\/span><\/strong><span>\uff0c<\/span><strong><span>\u6dfb\u52a0<\/span><\/strong><span>\uff0c<\/span><strong><span>X 2<\/span><\/strong><span>\u3002\u6216\u8005\uff1a<\/span><strong><span>\u6dfb\u52a0<\/span><\/strong><span>\uff0c\u00a0<\/span><strong><span>X 3<\/span><\/strong><span>\uff0c<\/span><strong><span>X 2<\/span><\/strong><span>\uff0c<\/span><strong><span>X 2<\/span><\/strong><span>\uff0c<\/span><strong><span>\u51cf<\/span><\/strong><span>\uff0c\u00a0<\/span><strong><span>X 2<\/span><\/strong><span>\uff0c<\/span><strong><span>\u51cf<\/span><\/strong><span>\uff0c<\/span><strong><span>X 2<\/span><\/strong><span>\u3002\u6216\u5c1d\u8bd5\u60a8\u81ea\u5df1\u7684\u7ec4\u5408\u3002<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><strong><span>\u6311\u6218\u81ea\u5df1<\/span><\/strong><span>\uff08\u53ef\u9009-\u6211\u4eec\u5c06\u4e0d\u68c0\u67e5\u6b64\u4ee3\u7801\uff09<\/span><br \/>\n<span>\u5728\u63a7\u4ef6\u7ec4\u4ef6\u4e2d\u6dfb\u52a0\u6309\u94ae\u7ec4\u4ef6\u7684\u7b2c\u4e8c\u4e2a\u5b9e\u4f8b\uff0c\u4ee5\u521b\u5efa\u663e\u793a\u5728\u5206\u5b50\u7ec4\u4ef6\u4e2d\u7684\u9664\u6cd5\u6309\u94ae\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b66\u4e60\u76ee\u6807 \u5728\u6b64\u9879\u76ee\u4e2d\uff0c\u60a8\u5c06\uff1a \u6784\u5efa\u5f7c\u6b64\u901a\u4fe1\u7684Lightning Web\u7ec4\u4ef6\u3002 \u4ece\u5b50\u7ec4\u4ef6\u4e0e\u5176\u7236\u7ec4\u4ef6\u8fdb\u884c\u901a\u4fe1\u3002 \u4ece &hellip; <a href=\"http:\/\/www.ponybai.com\/?p=3310\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u5728\u95ea\u7535Web\u7ec4\u4ef6\u4e4b\u95f4\u901a\u4fe1 &#8211; \u4ece\u5b69\u5b50\u5230\u7236\u6bcd\u6c9f\u901a<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3311,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[106],"tags":[],"class_list":["post-3310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728\u95ea\u7535Web\u7ec4\u4ef6\u4e4b\u95f4\u901a\u4fe1 - \u4ece\u5b69\u5b50\u5230\u7236\u6bcd\u6c9f\u901a - \u767d\u767d\u968f\u7b14<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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