{"id":3259,"date":"2021-01-13T13:29:40","date_gmt":"2021-01-13T05:29:40","guid":{"rendered":"http:\/\/www.salesforcecrm.cn\/?p=3259"},"modified":"2021-01-13T13:29:40","modified_gmt":"2021-01-13T05:29:40","slug":"%e9%80%82%e7%94%a8%e4%ba%8eaura%e5%bc%80%e5%8f%91%e4%ba%ba%e5%91%98%e7%9a%84lightning-web-components-%e4%b8%8eevent%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3259","title":{"rendered":"\u9002\u7528\u4e8eAura\u5f00\u53d1\u4eba\u5458\u7684Lightning Web Components  \u4e0eEvent\u901a\u4fe1"},"content":{"rendered":"<div class=\"nested0\">\n<h2 id=\"Tdxn4tBK-heading1\" class=\"helpHead2\">\u5b66\u4e60\u76ee\u6807<\/h2>\n<div class=\"body conbody\">\n<div class=\"p\">\n<p>\u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\uff1a<\/p>\n<ul class=\"ul bulletList\">\n<li class=\"li\">\u63cf\u8ff0\u4e24\u79cd\u7f16\u7a0b\u6a21\u578b\u5728\u4e8b\u4ef6\u4e0a\u7684\u5dee\u5f02\u3002<\/li>\n<li class=\"li\">\u5c06\u4e8b\u4ef6\u4eceLightning Web\u7ec4\u4ef6\u53d1\u9001\u5230Aura\u7ec4\u4ef6\u3002<\/li>\n<\/ul>\n<\/div>\n<p class=\"p\">\u5355\u72ec\u9694\u79bb\u7684\u7ec4\u4ef6\u53ef\u80fd\u5f88\u6709\u7528\uff0c\u4f46\u662f\u5f53\u7ec4\u4ef6\u5f00\u59cb\u76f8\u4e92\u4ea4\u8c08\u65f6\uff0c\u771f\u6b63\u7684\u5e94\u7528\u7a0b\u5e8f\u9b54\u672f\u5c31\u4f1a\u53d1\u751f\u3002\u8fd9\u5c31\u662f\u4e8b\u4ef6\u7684\u6e90\u5934\u3002\u4f7f\u7528\u4e8b\u4ef6\u5728\u7ec4\u4ef6\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u662fWeb\u6807\u51c6\uff0c\u800c\u4e8b\u4ef6\u5bf9\u4e8eAura\u7ec4\u4ef6\u548cLightning Web\u7ec4\u4ef6\u4e2d\u7684\u901a\u4fe1\u90fd\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002<\/p>\n<\/div>\n<\/div>\n<div id=\"communicate-with-events-component-events\" class=\"topic concept nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<p><a name=\"communicate-with-events-component-events\"><\/a><\/p>\n<h2 id=\"Tdxn4tBK-heading2\" class=\"helpHead2\">\u7ec4\u4ef6\u4e8b\u4ef6\u6210\u4e3aDOM\u4e8b\u4ef6<\/h2>\n<div class=\"body conbody\">\n<p class=\"p\">\u5c06Aura\u7ec4\u4ef6\u4e2d\u7684\u7ec4\u4ef6\u4e8b\u4ef6\u8fc1\u79fb\u5230Lightning Web\u7ec4\u4ef6\u4e2d\u7684Web\u6807\u51c6DOM\u4e8b\u4ef6\u3002\u5982\u679c\u60a8\u719f\u6089DOM\u4e8b\u4ef6\uff0c\u5219\u4f1a\u5728Lightning Web\u7ec4\u4ef6\u4e2d\u6ce8\u610f\u5230\u76f8\u540c\u7684\u4f20\u64ad\u884c\u4e3a\u3002<\/p>\n<div class=\"section\">\n<h3 id=\"Tdxn4tBK-heading3\" class=\"helpHead3\">\u521b\u5efa\u548c\u53d1\u9001\u4e8b\u4ef6<\/h3>\n<p class=\"p\">\u4ee3\u66ff\u4e13\u6709\u00a0<samp>\u4e8b\u4ef6<\/samp>\u00a0Aura\u7ec4\u4ef6\u4e2d\u7684\u5bf9\u8c61\uff0c\u8bf7\u4f7f\u7528\u00a0<samp>\u4e8b\u4ef6<\/samp>\u00a0\u8981\u4e48\u00a0<samp>CustomEvent<\/samp>\u6807\u51c6DOM\u63a5\u53e3\u3002\u6211\u4eec\u5f3a\u70c8\u5efa\u8bae\u60a8\u4f7f\u7528<samp>CustomEvent<\/samp>\u754c\u9762\uff0c\u56e0\u4e3a\u8fd9\u6837\u53ef\u4ee5\u63d0\u4f9b\u66f4\u4e00\u81f4\u7684\u4f53\u9a8c\u3002\u8be5\u6846\u67b6\u53ef\u80fd\u9700\u8981\u4fee\u8865\u4e8b\u4ef6\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4ee5\u89c4\u8303\u6d4f\u89c8\u5668\u4e4b\u95f4\u7684\u5b9e\u73b0\uff0c\u5e76\u4f7f\u7528<samp>CustomEvent<\/samp>\u4fdd\u8bc1\u60a8\u7684\u7ec4\u4ef6\u88ab\u8986\u76d6\u3002Internet Explorer\u4e0d\u652f\u6301<samp>CustomEvent<\/samp>\u00a0\u63a5\u53e3\u672c\u8eab\uff0c\u4f46Lightning Web\u7ec4\u4ef6\u6a21\u578b\u589e\u52a0\u4e86\u5bf9\u6b64\u7684\u652f\u6301\u3002<\/p>\n<p class=\"p\">Lightning Web\u7ec4\u4ef6\u4e2d\u6ca1\u6709\u7b49\u6548\u7684\u00a0<samp>&lt;aura\uff1aregisterEvent&gt;<\/samp>\u5728Aura\u7ec4\u4ef6\u6807\u8bb0\u4e2d\u6807\u8bb0\uff0c\u4ee5\u6ce8\u518c\u7ec4\u4ef6\u53ef\u4ee5\u89e6\u53d1\u4e8b\u4ef6\u3002\u7531\u4e8e\u4f7f\u7528\u4e86\u6807\u51c6\u7684DOM\u4e8b\u4ef6\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u989d\u5916\u7684\u4eea\u5f0f\u3002<\/p>\n<p class=\"p\">\u4ee3\u66ff\u00a0<samp>event.fire\uff08\uff09<\/samp>\u00a0\u5728Aura\u7ec4\u4ef6\u4e2d\uff0c\u4f7f\u7528\u6807\u51c6DOM\u65b9\u6cd5\uff0c\u00a0<samp>this.dispatchEvent\uff08myEvent\uff09<\/samp>\uff0c\u5728Lightning Web\u7ec4\u4ef6\u4e2d\u3002<\/p>\n<p class=\"p\">\u8fd9\u662f\u5728\u5e7f\u544a\u7d20\u6750\u4e2d\u521b\u5efa\u548c\u5206\u914d\uff08\u89e6\u53d1\uff09\u4e8b\u4ef6\u7684\u793a\u4f8b\u00a0<samp>propertyTile<\/samp>\u00a0\u95ea\u7535\u7f51\u7edc\u7ec4\u4ef6\u3002<\/p>\n<div class=\"codeblock\">\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">export <span class=\"token keyword\">default<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PropertyTile<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token annotation punctuation\">@api<\/span> property<span class=\"token punctuation\">;<\/span>\n    <span class=\"token function\">propertySelected<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">const<\/span> selectedEvent <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomEvent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'selected'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span>\n            detail<span class=\"token operator\">:<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>property<span class=\"token punctuation\">.<\/span><span class=\"token class-name\">Id<\/span><span class=\"token punctuation\">,<\/span>\n        <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>selectedEvent<span class=\"token punctuation\">)<\/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 class=\"p\">\u4e2d\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u00a0<samp>CustomEvent\uff08\uff09<\/samp>\u00a0\u6784\u9020\u51fd\u6570\u5c06\u4e8b\u4ef6\u7684\u540d\u79f0\u8bbe\u7f6e\u4e3a\u00a0<samp>\u5df2\u9009<\/samp>\u3002<\/p>\n<p class=\"p\">\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u914d\u7f6e\u4e8b\u4ef6\u884c\u4e3a\u7684\u5bf9\u8c61\u3002\u5728\u6b64\u5bf9\u8c61\u4e2d\uff0c\u6211\u4eec\u5c06<samp>\u8be6\u60c5<\/samp>\uff0c\u8fd9\u662f\u4e8b\u4ef6\u7684\u6570\u636e\u6709\u6548\u8d1f\u8f7d\u3002\u5904\u7406\u7ec4\u4ef6\u53ef\u4ee5\u8bfb\u53d6\u6570\u636e\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u8fc7\u4e86<samp>this.property.Id<\/samp>\u00a0\u503c\u3002<\/p>\n<\/div>\n<div class=\"section\">\n<h3 id=\"Tdxn4tBK-heading4\" class=\"helpHead3\">\u5904\u7406\u4e8b\u4ef6<\/h3>\n<p class=\"p\">Aura\u7ec4\u4ef6\u4f7f\u7528\u00a0<samp>&lt;\u5149\u73af\uff1a\u5904\u7406\u7a0b\u5e8f&gt;<\/samp>\u5728\u6807\u8bb0\u4e2d\u6807\u8bb0\u4ee5\u5b9a\u4e49\u5904\u7406\u7a0b\u5e8f\u3002\u53e6\u5916\uff0c\u4e00\u4e2a\u7ec4\u4ef6\u53ef\u4ee5\u5728\u5176\u6807\u8bb0\u4e2d\u5f15\u7528\u53e6\u4e00\u4e2a\u7ec4\u4ef6\u65f6\u58f0\u660e\u4e00\u4e2a\u5904\u7406\u7a0b\u5e8f\u52a8\u4f5c\u3002<\/p>\n<p class=\"p\">\u6b64\u5149\u73af\u7ec4\u4ef6\u4f7f\u7528\u00a0<samp>c\uff1a\u5b69\u5b50<\/samp>\u00a0\u5728\u5176\u6807\u8bb0\u4e2d\u5e76\u58f0\u660e\u4e00\u4e2a\u00a0<samp>handleNotification<\/samp>\u00a0\u901a\u77e5\u4e8b\u4ef6\u7684\u5904\u7406\u7a0b\u5e8f\u00a0<samp>c\uff1a\u5b69\u5b50<\/samp>\u00a0\u706b\u707e\u3002<\/p>\n<div class=\"codeblock\">\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>child notification<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!c.handleNotification}\"<\/span><span class=\"token operator\">\/<\/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<p class=\"p\">Lightning Web\u7ec4\u4ef6\u53ef\u4ee5\u7c7b\u4f3c\u5730\u5177\u6709\u58f0\u660e\u6027\u5904\u7406\u7a0b\u5e8f\u3002\u58f0\u660e\u5904\u7406\u7a0b\u5e8f\u4e2d\u7684\u4e8b\u4ef6\u540d\u79f0\u4ee5\u524d\u7f00<samp>\u4e0a<\/samp>\u3002<\/p>\n<div class=\"codeblock\">\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>child onnotification<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>handleNotification<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>c<span class=\"token operator\">-<\/span>child<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 class=\"p\">\u7684\u00a0<samp>handleNotification<\/samp>\u00a0\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u5728\u7ec4\u4ef6\u7684JavaScript\u6587\u4ef6\u4e2d\u5b9a\u4e49\u3002<\/p>\n<p class=\"p\">\u5728Lightning Web\u7ec4\u4ef6\u4e2d\uff0c\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6807\u51c6\u7a0b\u5e8f\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u8bbe\u7f6e\u5904\u7406\u7a0b\u5e8f\u00a0<samp>addEventListener\uff08\uff09<\/samp>\u00a0\u7ec4\u4ef6\u7684JavaScript\u6587\u4ef6\u4e2d\u7684\u65b9\u6cd5\u3002<\/p>\n<p class=\"p\">\u8ba9\u6211\u4eec\u770b\u770bDreamHouse\u5e94\u7528\u7a0b\u5e8f\u5982\u4f55\u5904\u7406\u5728\u00a0<samp>propertyTile<\/samp>\u95ea\u7535\u7f51\u7edc\u7ec4\u4ef6\u3002\u7684<samp>propertyTileList<\/samp>\u00a0Lightning Web\u7ec4\u4ef6\u5728\u5176HTML\u6587\u4ef6\u4e2d\u5904\u7406\u6b64\u4e8b\u4ef6\u3002<\/p>\n<div class=\"codeblock\">\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><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>properties<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\">\"property\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">-<\/span>property<span class=\"token operator\">-<\/span>tile property<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>property<span class=\"token punctuation\">}<\/span> key<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>property<span class=\"token punctuation\">.<\/span><span class=\"token class-name\">Id<\/span><span class=\"token punctuation\">}<\/span> onselected<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>onPropertySelected<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>c<span class=\"token operator\">-<\/span>property<span class=\"token operator\">-<\/span>tile<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 class=\"p\">\u7684\u00a0<samp>\u5df2\u9009<\/samp>\u00a0\u4e8b\u4ef6\u540d\u79f0\u4ee5\u5f00\u5934\u00a0<samp>\u4e0a<\/samp>\u00a0\u5728\u7531\u914d\u7f6e\u7684\u58f0\u660e\u5904\u7406\u7a0b\u5e8f\u4e2d\u00a0<samp>onselected = {onPropertySelected}<\/samp>\u3002<\/p>\n<p class=\"p\">\u7684\u00a0<samp>onPropertySelected<\/samp>\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u51fd\u6570\u5728<span class=\"ph filepath\">propertyTileList.js\u4e2d<\/span>\u5b9a\u4e49\u3002<\/p>\n<div class=\"codeblock\">\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token function\">onPropertySelected<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    pubsub<span class=\"token punctuation\">.<\/span><span class=\"token function\">fire<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'propertySelected'<\/span><span class=\"token punctuation\">,<\/span> event<span class=\"token punctuation\">.<\/span>detail<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<\/div>\n<p class=\"p\">\u8ba9\u60a8\u56de\u60f3\u8d77\u6211\u4eec\u5f00\u9664\u00a0<samp>\u5df2\u9009<\/samp>\u00a0\u4e8b\u4ef6\u53d1\u751f\u00a0<samp>propertyTile<\/samp>\u3002\u7684<samp>CustomEvent\uff08\uff09<\/samp>\u00a0\u6784\u9020\u51fd\u6570\u96c6\u00a0<samp>\u8be6\u60c5<\/samp>\u00a0\u81f3\u00a0<samp>this.property.Id<\/samp>\u3002\u5904\u7406\u7a0b\u5e8f\u901a\u8fc7\u8bbf\u95ee\u4ee5\u4e0b\u4e8b\u4ef6\u6765\u89e3\u538b\u7f29\u4e8b\u4ef6\u6570\u636e<samp>\u4e8b\u4ef6\u7ec6\u8282<\/samp>\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u83b7\u5f97<samp>\u4e8b\u4ef6\u7ec6\u8282<\/samp>\u3002<\/p>\n<p class=\"p\">\u6211\u4eec\u89e3\u91ca\u53d1\u751f\u4e86\u4ec0\u4e48\u4e8b\u00a0<samp>pubsub.fire\uff08\uff09<\/samp>\u00a0\u63a5\u4e0b\u6765\u6211\u4eec\u6765\u770b\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"communicate-with-events-application-events\" class=\"topic concept nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<p><a name=\"communicate-with-events-application-events\"><\/a><\/p>\n<h2 id=\"Tdxn4tBK-heading5\" class=\"helpHead2\">\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u6210\u4e3a\u53d1\u5e03-\u8ba2\u9605\u6a21\u5f0f<\/h2>\n<div class=\"body conbody\">\n<p class=\"p\">\u5c06Aura\u7ec4\u4ef6\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u8fc1\u79fb\u5230Lightning Web\u7ec4\u4ef6\u4e2d\u7684\u53d1\u5e03-\u8ba2\u9605\uff08\u53d1\u5e03-\u8ba2\u9605\uff09\u6a21\u5f0f\u3002\u5728\u53d1\u5e03-\u8ba2\u9605\u6a21\u5f0f\u4e2d\uff0c\u4e00\u4e2a\u7ec4\u4ef6\u53d1\u5e03\u4e00\u4e2a\u4e8b\u4ef6\uff0c\u5176\u4ed6\u7ec4\u4ef6\u8ba2\u9605\u4ee5\u63a5\u6536\u548c\u5904\u7406\u8be5\u4e8b\u4ef6\u3002\u8ba2\u9605\u8be5\u4e8b\u4ef6\u7684\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u4f1a\u63a5\u6536\u8be5\u4e8b\u4ef6\u3002<\/p>\n<p 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Builder\u4e2d\u4f7f\u7528\u7684\u4e0d\u76f8\u5173\u7ec4\u4ef6\u662f\u9700\u8981\u901a\u4fe1\u7684\u540c\u7ea7\u7ec4\u4ef6\u7684\u793a\u4f8b\u3002\u5728\u8fd9\u4e9b\u60c5\u51b5\u4e0b\uff0cpub-sub\u6a21\u5f0f\u662f\u5fc5\u7ecf\u4e4b\u8def\u3002<\/p>\n<p class=\"p\">DreamHouse\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528<span class=\"ph filepath\">pubsub.js<\/span>\u6a21\u5757\u3002\u968f\u65f6\u590d\u5236<samp>pubsub<\/samp>\u00a0\u6a21\u5757\u5e76\u5728\u60a8\u7684\u4ee3\u7801\u4e2d\u4f7f\u7528\u5b83\u3002<\/p>\n<p class=\"p\">\u7684\u00a0<samp>pubsub<\/samp>\u00a0\u6a21\u5757\u5bfc\u51fa\u4e09\u79cd\u65b9\u6cd5\u3002<\/p>\n<dl class=\"dl detailList\">\n<dt class=\"dt dlterm\">\u5bc4\u5b58\u5668<\/dt>\n<dd class=\"dd\">\u6ce8\u518c\u4e8b\u4ef6\u7684\u56de\u8c03\u3002<\/dd>\n<dt class=\"dt dlterm\">\u53d6\u6d88\u6ce8\u518c<\/dt>\n<dd class=\"dd\">\u6ce8\u9500\u4e8b\u4ef6\u7684\u56de\u8c03\u3002<\/dd>\n<dt class=\"dt dlterm\">\u706b<\/dt>\n<dd 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Web\u7ec4\u4ef6\u4e00\u6837\u3002\u5c01\u95ed\u7684Aura\u7ec4\u4ef6\u53ef\u4ee5\u6355\u83b7\u4e8b\u4ef6\u5e76\u8fdb\u884c\u5904\u7406\u3002\uff08\u53ef\u9009\uff09Aura\u7ec4\u4ef6\u53ef\u4ee5\u89e6\u53d1Aura\u4e8b\u4ef6\uff0c\u4ee5\u4e0e\u5176\u4ed6Aura\u7ec4\u4ef6\u6216\u4e0e\u5e94\u7528\u7a0b\u5e8f\u5bb9\u5668\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n<p class=\"p\">\u5f53\u60a8\u8981\u652f\u6301Aura\u7ec4\u4ef6\u4e2d\u4f7f\u7528\u4f46Lightning Web\u7ec4\u4ef6\u5f53\u524d\u4e0d\u652f\u6301\u7684\u4e8b\u4ef6\u6216\u63a5\u53e3\u65f6\uff0c\u6b64\u6280\u672f\u5f88\u6709\u7528\u3002<\/p>\n<p class=\"p\">\u4ee5\u4e0b\u793a\u4f8b\u8bf4\u660e\u4e86\u6b64\u6280\u672f\u3002\u6b64Lightning Web\u7ec4\u4ef6\u89e6\u53d1\u81ea\u5b9a\u4e49\u00a0<samp>\u901a\u77e5<\/samp>\u00a0JavaScript\u6587\u4ef6\u4e2d\u7684\u4e8b\u4ef6\u3002<\/p>\n<div class=\"codeblock\">\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token comment\">\/\/ catchAndRelease.js<\/span>\n<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\">CatchAndRelease<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token comment\">\/**\n     * Handler for 'Fire My Toast' button.\n     * @param {Event} evt click event.\n     *\/<\/span>\n    <span class=\"token function\">handleFireMyToast<\/span><span class=\"token punctuation\">(<\/span>evt<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">const<\/span> eventName <span class=\"token operator\">=<\/span> <span class=\"token string\">'notification'<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">const<\/span> event <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomEvent<\/span><span class=\"token punctuation\">(<\/span>eventName<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span>\n            detail<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> message<span class=\"token operator\">:<\/span> <span class=\"token string\">'See you on the other side.'<\/span> <span class=\"token punctuation\">}<\/span>\n        <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>event<span class=\"token punctuation\">)<\/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 class=\"p\">\u5c01\u95ed\u7684Aura\u7ec4\u4ef6\u5305\u88c5\u5668\u4e3a\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u6dfb\u52a0\u4e86\u5904\u7406\u7a0b\u5e8f\u3002\u8bf7\u6ce8\u610f\uff0c\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f<samp>\u901a\u77e5<\/samp>\uff0c\u5c06\u4e8b\u4ef6\u540d\u79f0\u4e0e\u00a0<samp>\u4e0a<\/samp>\u4ee5\u5b83\u4e3a\u524d\u7f00\u3002\u5373\u4f7f\u7528<samp>\u901a\u77e5<\/samp>\u00a0\u5904\u7406\u540d\u4e3a\u00a0<samp>\u901a\u77e5<\/samp>\u3002<\/p>\n<div class=\"codeblock\">\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><span class=\"token operator\">--<\/span> catchAndReleaseWrapper<span class=\"token punctuation\">.<\/span>cmp <span class=\"token operator\">--<\/span><span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component <span class=\"token keyword\">implements<\/span><span class=\"token operator\">=<\/span><span class=\"token string\">\"force:appHostable\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>catchAndRelease onnotification<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!c.handleCustomEvent}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>aura<span class=\"token operator\">:<\/span>component<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<div class=\"box message info\">\n<div class=\"inner\">\n<div class=\"bd\">\n<div class=\"media\">\n<p><img decoding=\"async\" class=\"img mtm\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/modules\/lightning-web-components-for-aura-developers\/communicate-with-events\/images\/c4d9ef0c272016519cf3740a5172d683_icon_note.png\" alt=\"\u6ce8\u610f\" \/><\/p>\n<div class=\"mediaBd\">\n<h4 class=\"mbs\">\u6ce8\u610f<\/h4>\n<p>\u60a8\u53ea\u80fd\u6307\u5b9a\u4e00\u4e2a\u00a0<samp>\u901a\u77e5<\/samp>\u00a0DOM\u4e8b\u4ef6\u5192\u6ce1\u5230\u7684\u7b2c\u4e00\u4e2aAura\u7ec4\u4ef6\u4e2d\u7684\u5904\u7406\u7a0b\u5e8f\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"p\">\u7684\u00a0<samp>handleCustomEvent<\/samp>\u00a0\u5728\u63a7\u5236\u5668\u7684\u529f\u80fd\u00a0<samp>catchAndReleaseWrapper<\/samp>\u00a0Aura\u7ec4\u4ef6\u5904\u7406\u4e8b\u4ef6\u3002<\/p>\n<div class=\"codeblock\">\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token comment\">\/\/ catchAndReleaseWrapperController.js<\/span>\n<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>\n    handleCustomEvent<span class=\"token operator\">:<\/span> <span class=\"token function\">function<\/span><span class=\"token punctuation\">(<\/span>cmp<span class=\"token punctuation\">,<\/span> evt<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token comment\">\/\/ Get details from the DOM event fired by the Lightning web component<\/span>\n        <span class=\"token keyword\">var<\/span> msg <span class=\"token operator\">=<\/span> evt<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParam<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'message'<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token string\">''<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<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<\/div>\n<p class=\"p\">Lightning Web\u7ec4\u4ef6\u8c03\u5ea6\u7684\u901a\u77e5\u4e8b\u4ef6\u8bbe\u7f6e\u4e8b\u4ef6\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n<div class=\"codeblock\">\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\">detail<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> message<span class=\"token operator\">:<\/span> <span class=\"token string\">'See you on the other side.'<\/span> <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 class=\"p\">\u5904\u7406\u4e8b\u4ef6\u7684Aura\u7ec4\u4ef6\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8bbf\u95ee\u4e8b\u4ef6\u6570\u636e\u00a0<samp>evt.getParam\uff08&#8217;message&#8217;\uff09<\/samp>\u3002<\/p>\n<p class=\"p\">\u60a8\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5904\u7406\u4e8b\u4ef6\u3002\u60a8\u53ef\u4ee5\u9009\u62e9\u89e6\u53d1\u4e00\u4e2a\u65b0\u7684Aura\u4e8b\u4ef6\uff0c\u4ee5\u4e0e\u5176\u4ed6Aura\u7ec4\u4ef6\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5b66\u4e60\u76ee\u6807 \u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\uff1a \u63cf\u8ff0\u4e24\u79cd\u7f16\u7a0b\u6a21\u578b\u5728\u4e8b\u4ef6\u4e0a\u7684\u5dee\u5f02\u3002 \u5c06\u4e8b\u4ef6\u4eceLightning Web\u7ec4\u4ef6\u53d1 &hellip; <a href=\"http:\/\/www.ponybai.com\/?p=3259\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u9002\u7528\u4e8eAura\u5f00\u53d1\u4eba\u5458\u7684Lightning Web Components  \u4e0eEvent\u901a\u4fe1<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[137],"tags":[],"class_list":["post-3259","post","type-post","status-publish","format-standard","hentry","category-auralightning-web-components"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9002\u7528\u4e8eAura\u5f00\u53d1\u4eba\u5458\u7684Lightning Web Components \u4e0eEvent\u901a\u4fe1 - \u767d\u767d\u968f\u7b14<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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