{"id":3353,"date":"2021-01-13T16:44:56","date_gmt":"2021-01-13T08:44:56","guid":{"rendered":"http:\/\/www.salesforcecrm.cn\/?p=3353"},"modified":"2021-01-13T16:44:56","modified_gmt":"2021-01-13T08:44:56","slug":"%e4%bd%bf%e7%94%a8lightning-web-components%e5%bc%80%e6%ba%90%e6%9e%84%e5%bb%ba%e6%82%a8%e7%9a%84%e7%ac%ac%e4%b8%80%e4%b8%aa%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f-%e4%bf%ae%e6%94%b9%e9%bb%98%e8%ae%a4","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3353","title":{"rendered":"\u4f7f\u7528Lightning Web Components\u5f00\u6e90\u6784\u5efa\u60a8\u7684\u7b2c\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f &#8211; \u4fee\u6539\u9ed8\u8ba4\u5e94\u7528"},"content":{"rendered":"<h1 class=\"slds-p-top_small slds-text-heading_large\">\u4fee\u6539\u9ed8\u8ba4\u5e94\u7528<\/h1>\n<div class=\"unit-content\">\n<div class=\"ph\">\u66f4\u65b0index.html\u6587\u4ef6<\/div>\n<p>\u5728\u4e0a\u4e00\u6b65\u4e2d\uff0c\u60a8\u4f7f\u7528\u8be5<code>create-lwc-app<\/code>\u00a0\u5de5\u5177\u521b\u5efa\u4e86\u6837\u677f\u5e94\u7528\u7a0b\u5e8f\u00a0\u3002\u5728\u6b64\u6b65\u9aa4\u4e2d\uff0c\u60a8\u5c06\u4fee\u6539\u9ed8\u8ba4\u5e94\u7528\u7a0b\u5e8f\u5e76\u5c06\u5176\u53d8\u6210\u4f1a\u8bae\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u81ea\u5df1\u559c\u6b22\u7684\u4ee3\u7801\u7f16\u8f91\u5668\u5b8c\u6210\u6b64\u9879\u76ee\u3002\u6211\u4eec\u5efa\u8bae\u4f7f\u7528\u00a0Visual Studio Code\uff0c\u4f46\u8fd9\u4e0d\u662f\u5fc5\u9700\u7684\u3002\u6211\u4eec\u4ee5VS Code\u4e3a\u5c06\u6765\u7684\u6307\u793a\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li>\u6253\u5f00<strong>Visual Studio\u4ee3\u7801<\/strong>\u3002<\/li>\n<li>\u5728\u83dc\u5355\u4e2d\u9009\u62e9<strong>\u6587\u4ef6&gt;\u6253\u5f00<\/strong>\u3002<\/li>\n<li>\u9009\u62e9\u60a8\u7684<code>conference-app<\/code>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5355\u51fb\u201c<strong>\u6253\u5f00\u201d<\/strong>\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><img decoding=\"async\" class=\"image image-block\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/build-your-first-app-with-lightning-web-components-open-source\/modify-the-default-application\/images\/3269e2f7047cdbfb137ceabdef84f6ca_lwc-os-u-2-1.png\" alt=\"Visual Studio Code\u4e2d\u7684\u4f1a\u8bae\u5e94\u7528\u7a0b\u5e8f\u89c6\u56fe \" \/><\/p>\n<ol>\n<li>\u5728VS Code\u6587\u4ef6\u8d44\u6e90\u7ba1\u7406\u5668\u4e2d\uff0c\u5c55\u5f00<code>src<\/code>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5c55\u5f00<code>client<\/code>\u6587\u4ef6\u5939\u3002<\/li>\n<li><strong>\u6253\u5f00<\/strong>\u8be5<code>index.html<\/code>\u6587\u4ef6\u3002<\/li>\n<li><strong>\u5c06<\/strong>\u73b0\u6709\u5185\u5bb9<strong>\u66ff\u6362<\/strong>\u4e3a\u4ee5\u4e0bHTML\u4ee3\u7801\uff1a\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>DOCTYPE html<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span>html lang<span class=\"token operator\">=<\/span><span class=\"token string\">\"en\"<\/span><span class=\"token operator\">&gt;<\/span>\n  <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>head<span class=\"token punctuation\">&gt;<\/span><\/span>\n    <span class=\"token operator\">&lt;<\/span>meta charset<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 generics\"><span class=\"token punctuation\">&lt;<\/span>title<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token class-name\">Lightning<\/span> <span class=\"token class-name\">Conference<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>title<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>style<span class=\"token punctuation\">&gt;<\/span><\/span>\n      body <span class=\"token punctuation\">{<\/span>\n        font<span class=\"token operator\">-<\/span>family<span class=\"token operator\">:<\/span> <span class=\"token class-name\">Helvetica<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Arial<\/span><span class=\"token punctuation\">,<\/span> sans<span class=\"token operator\">-<\/span>serif<span class=\"token punctuation\">;<\/span>\n        margin<span class=\"token operator\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n        padding<span class=\"token operator\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>style<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>meta name<span class=\"token operator\">=<\/span><span class=\"token string\">\"viewport\"<\/span> content<span class=\"token operator\">=<\/span><span class=\"token string\">\"width=device-width,initial-scale=1\"<\/span> <span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>link rel<span class=\"token operator\">=<\/span><span class=\"token string\">\"shortcut icon\"<\/span> href<span class=\"token operator\">=<\/span><span class=\"token string\">\"\/resources\/favicon.ico\"<\/span> <span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>head<span class=\"token operator\">&gt;<\/span>\n  <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>body<span class=\"token punctuation\">&gt;<\/span><\/span>\n    <span class=\"token operator\">&lt;<\/span>div id<span class=\"token operator\">=<\/span><span class=\"token string\">\"main\"<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>div<span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>body<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>html<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><strong>\u4fdd\u5b58<\/strong>\u7684<code>index.html<\/code>\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<p>\u5728\u6b64\u65b0\u7248\u672c\u4e2d\uff0c\u60a8\u66f4\u6539\u4e86\u9875\u9762\u6807\u9898\u548c\u5d4c\u5165\u5f0fCSS\u4ee5\u652f\u6301\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u7684\u8981\u6c42\u3002\u5728<code>div<\/code>\u4e0eID<code>main<\/code>\u4e3a\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u4e86JavaScript\u4e2d\u7684\u5165\u53e3\u70b9<code>index.js<\/code>\u6587\u4ef6\u4f7f\u7528\u8ffd\u52a0\u4e86\u7b2c\u4e00\u4e2aWeb\u7ec4\u4ef6<code>createElement<\/code>\u6765\u521b\u5efa\u7ec4\u4ef6\u3002<\/p>\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> createElement <span class=\"token punctuation\">}<\/span> from <span class=\"token string\">'lwc'<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">import<\/span> <span class=\"token class-name\">MyApp<\/span> from <span class=\"token string\">'my\/app'<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">const<\/span> app <span class=\"token operator\">=<\/span> <span class=\"token function\">createElement<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'my-app'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span> is<span class=\"token operator\">:<\/span> <span class=\"token class-name\">MyApp<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\ndocument<span class=\"token punctuation\">.<\/span><span class=\"token function\">querySelector<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'#main'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">appendChild<\/span><span class=\"token punctuation\">(<\/span>app<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<p><code>&lt;my-app&gt;<\/code>\u662f\u8868\u793a\u6211\u4eec\u7b2c\u4e00\u4e2aWeb\u7ec4\u4ef6\u7684\u81ea\u5b9a\u4e49\u5143\u7d20\uff1a<code>my<\/code>\u662f\u6620\u5c04\u5230\u6587\u4ef6\u7cfb\u7edf\u4e0a\u6211\u7684\u6587\u4ef6\u5939\u7684\u540d\u79f0\u7a7a\u95f4\uff0c\u5e76\u4e14<code>app<\/code>\u662fWeb\u7ec4\u4ef6\u540d\u79f0\u3002\u6240\u8ff0<code>app<\/code>Web\u7ec4\u4ef6\u88ab\u7528\u4f5c\u5e94\u7528\u7a0b\u5e8f\u7684\u5bb9\u5668\u3002<\/p>\n<div class=\"ph\">\u4fee\u6539\u5e94\u7528\u7a0b\u5e8fWeb\u7ec4\u4ef6<\/div>\n<p>\u8ba9\u6211\u4eec\u4fee\u6539\u00a0<code>app<\/code>\u00a0Web\u7ec4\u4ef6\u4ee5\u663e\u793a\u4f1a\u8bae\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u7684\u6807\u9898\u3002\u8be5\u7ec4\u4ef6\u53ef\u534f\u8c03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u6240\u6709\u4e8b\u4ef6\u548c\u6570\u636e\u3002<\/p>\n<ol>\n<li>\u5728VS\u4ee3\u7801\u6587\u4ef6\u6d4f\u89c8\u5668\u4e2d\uff0c\u5c55\u5f00<code>app<\/code>\u6587\u4ef6\u5939\u4e0b<code>src\/client\/modules\/my<\/code>\u3002\u8be5\u6587\u4ef6\u5939\u5305\u542b\u7ec4\u6210Lightning Web\u7ec4\u4ef6\u7684\u4e09\u4e2a\u6587\u4ef6\uff1a\u4e00\u4e2ahtml\u6587\u4ef6\uff08\u6a21\u677f\uff09\uff0c\u4e00\u4e2ajs\u6587\u4ef6\uff08\u7c7b\u5b9a\u4e49\uff09\u548c\u4e00\u4e2acss\u6587\u4ef6\uff08\u6837\u5f0f\uff09\u3002<\/li>\n<li><strong>\u6253\u5f00<\/strong>\u8be5<code>app.html<\/code>\u6587\u4ef6\u3002<\/li>\n<li><strong>\u7528<\/strong>\u4ee5\u4e0b\u6807\u8bb0<strong>\u66ff\u6362<\/strong>\u73b0\u6709\u5185\u5bb9\uff1a\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 generics\"><span class=\"token punctuation\">&lt;<\/span>header<span class=\"token punctuation\">&gt;<\/span><\/span>\n    <span class=\"token operator\">&lt;<\/span>img src<span class=\"token operator\">=<\/span><span class=\"token string\">\"resources\/lwc.png\"<\/span> alt<span class=\"token operator\">=<\/span><span class=\"token string\">\"App logo\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>h2<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token class-name\">Lightning<\/span> <span class=\"token class-name\">Conference<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>h2<span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>header<span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&lt;<\/span>main <span class=\"token keyword\">class<\/span><span class=\"token operator\">=<\/span><span class=\"token string\">\"content\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">!<\/span><span class=\"token operator\">--<\/span> <span class=\"token class-name\">Add<\/span> components here <span class=\"token operator\">--<\/span><span class=\"token operator\">&gt;<\/span>\n  <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>main<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<p>\u8be5\u00a0<code>&lt;template&gt;<\/code>\u00a0\u6807\u7b7e\u662f\u5b9a\u5236\u5143\u7d20\u8bf4\u660e\u4e66\u7684\u4e00\u90e8\u5206\uff0c\u5305\u62ec\u7528\u4e8e\u7f51\u7edc\u7ec4\u4ef6\u7684HTML\u6807\u8bb0\u3002<\/li>\n<li><strong>\u4fdd\u5b58<\/strong>\u7684<code>app.html<\/code>\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<div class=\"ph\">\u8bbe\u7f6eWeb\u7ec4\u4ef6\u7684\u6837\u5f0f<\/div>\n<ol>\n<li>\u95ea\u7535Web\u7ec4\u4ef6\u7684\u6837\u5f0f\u770b\u8d77\u6765\u6700\u597d\u3002<strong>\u6253\u5f00<\/strong>\u6587\u4ef6<code>app.css<\/code>\u3002<\/li>\n<li><strong>\u7528<\/strong>\u4ee5\u4e0b\u6837\u5f0f<strong>\u66ff\u6362<\/strong>\u73b0\u6709\u5185\u5bb9\uff1a\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token punctuation\">.<\/span>content <span class=\"token punctuation\">{<\/span>\n  padding<span class=\"token operator\">:<\/span> <span class=\"token number\">0<\/span> <span class=\"token number\">3<\/span>rem<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nheader <span class=\"token punctuation\">{<\/span>\n  padding<span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span>rem<span class=\"token punctuation\">;<\/span>\n  display<span class=\"token operator\">:<\/span> flex<span class=\"token punctuation\">;<\/span>\n  color<span class=\"token operator\">:<\/span> #ffffff<span class=\"token punctuation\">;<\/span>\n  background<span class=\"token operator\">:<\/span> #<span class=\"token number\">0288d<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n  box<span class=\"token operator\">-<\/span>shadow<span class=\"token operator\">:<\/span> <span class=\"token number\">0<\/span> <span class=\"token number\">4<\/span>px <span class=\"token number\">3<\/span>px <span class=\"token function\">rgba<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">87<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">155<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n  align<span class=\"token operator\">-<\/span>items<span class=\"token operator\">:<\/span> center<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nheader img <span class=\"token punctuation\">{<\/span>\n  height<span class=\"token operator\">:<\/span> <span class=\"token number\">3<\/span>rem<span class=\"token punctuation\">;<\/span>\n  margin<span class=\"token operator\">-<\/span>right<span class=\"token operator\">:<\/span> <span class=\"token number\">0.3<\/span>rem<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\nheader h2 <span class=\"token punctuation\">{<\/span>\n  font<span class=\"token operator\">-<\/span>size<span class=\"token operator\">:<\/span> <span class=\"token number\">1.75<\/span>rem<span class=\"token punctuation\">;<\/span>\n  font<span class=\"token operator\">-<\/span>weight<span class=\"token operator\">:<\/span> <span class=\"token number\">300<\/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><strong>\u4fdd\u5b58<\/strong>\u7684<code>app.css<\/code>\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<p>\u8fd4\u56de\u6d4f\u89c8\u5668\u7a97\u53e3\u4ee5\u67e5\u770b\u66f4\u6539\u3002\u8be5\u5e94\u7528\u7a0b\u5e8f\u5e94\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p><img decoding=\"async\" class=\"image image-block\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/projects\/build-your-first-app-with-lightning-web-components-open-source\/modify-the-default-application\/images\/f098fee2ee8c48fd9c7bbc353f608de1_lwc-os-u-2-2.png\" alt=\"\u5728\u672c\u5730\u8fd0\u884c\u7684Lightning Conference\u5e94\u7528\u7a0b\u5e8f\u7684\u89c6\u56fe\u3002 \" \/><\/p>\n<div class=\"box message info\">\n<div class=\"inner\">\n<div class=\"bd\">\n<div class=\"media\">\n<div class=\"mediaBd\">\n<h4 class=\"mbs\"><a id=\"note\" class=\"anchor\" href=\"https:\/\/trailhead.salesforce.com\/content\/learn\/projects\/build-your-first-app-with-lightning-web-components-open-source\/modify-the-default-application#note\" aria-hidden=\"true\"><\/a>\u6ce8\u610f<\/h4>\n<div class=\"message-media-content\">\n<p>\u5982\u679c\u60a8\u770b\u4e0d\u5230\u66f4\u6539\uff0c\u5219\u53ef\u80fd\u5df2<code>watch<\/code>\u5728\u547d\u4ee4\u884c\u4e0a\u7ec8\u6b62\u4e86\u8be5\u8fc7\u7a0b\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8bf7\u8fd4\u56de\u547d\u4ee4\u884c\uff0c\u786e\u4fdd\u60a8\u4f4d\u4e8e\u6b63\u786e\u7684\u6587\u4ef6\u5939\uff08<code>conference-app<\/code>\uff09\u4e2d\uff0c\u7136\u540e\u952e\u5165\uff1a<code>npm run watch<\/code>\u3002\u6253\u5f00\u6d4f\u89c8\u5668\u7a97\u53e3\uff0c\u7136\u540e\u5bfc\u822a\u5230\u00a0Mac\u7684http\uff1a\/\/ 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