{"id":634,"date":"2018-01-21T12:35:04","date_gmt":"2018-01-21T04:35:04","guid":{"rendered":"http:\/\/www.ponybai.com\/?p=634"},"modified":"2018-01-21T12:35:04","modified_gmt":"2018-01-21T04:35:04","slug":"lightning-%e7%bb%84%e4%bb%b6%ef%bc%884%ef%bc%89%e5%b1%9e%e6%80%a7","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=634","title":{"rendered":"Lightning-\u7ec4\u4ef6\uff084\uff09\u5c5e\u6027"},"content":{"rendered":"<div class=\"nested0\">\n<h2 id=\"Tdxn4tBK-heading1\" class=\"helpHead2\">\u5b66\u4e60\u76ee\u6807<\/h2>\n<div class=\"body\">\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\">\u5728\u7ec4\u4ef6\u4e0a\u5b9a\u4e49\u5c5e\u6027\uff0c\u5e76\u5c06\u5c5e\u6027\u503c\u4f20\u9012\u7ed9\u5d4c\u5957\u7ec4\u4ef6\u3002<\/li>\n<li class=\"li\">\u7406\u89e3\u7ec4\u4ef6\u5b9a\u4e49\u548c\u7ec4\u4ef6\u5b9e\u4f8b\u4e4b\u95f4\u7684\u533a\u522b\uff0c\u5e76\u521b\u5efa\u7ec4\u4ef6\u7684\u591a\u4e2a\u5b9e\u4f8b\u3002<\/li>\n<li class=\"li\">\u521b\u5efa\u57fa\u672c\u8868\u8fbe\u5f0f\u6765\u663e\u793a\u66f4\u6539\u548c\u8ba1\u7b97\u7684\u503c\u3002<\/li>\n<li class=\"li\">\u4e3a\u52a8\u6001\u8f93\u51fa\u521b\u5efa\u6761\u4ef6\u8868\u8fbe\u5f0f\u3002<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"lex_dev_lc_basics_attr_component\" class=\"topic nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<h2 id=\"Tdxn4tBK-heading2\" class=\"helpHead2\"><span id=\"topic-title\" class=\"ph\">\u7ec4\u4ef6\u5c5e\u6027<\/span><\/h2>\n<div class=\"body\">\n<p>\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u867d\u7136\u6211\u4eec\u5df2\u7ecf\u521b\u5efa\u4e86\u51e0\u4e2a\u7ec4\u4ef6\uff0c\u5e76\u4e14\u5728\u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u65b9\u9762\u5b66\u5230\u4e86\u4e00\u4e9b\uff08\u9ad8\u5c42\u6b21\u7684\uff09\uff0c\u4f46\u662f\u6211\u4eec\u7f16\u5199\u7684\u4ee3\u7801\u5e76\u6ca1\u6709\u505a\u6bd4HTML\u66f4\u7b80\u5355\u7684\u5de5\u4f5c\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u4eec\u521b\u5efa\u7684\u4e24\u4e2a\u7ec4\u4ef6\u8f93\u51fa\u76f8\u540c\u7684\u9759\u6001\u6587\u672c\uff0c\u4e0d\u7ba1\u6211\u4eec\u505a\u4ec0\u4e48\u3002\u4f60\u53ef\u4ee5\u628a\u4ed6\u4eec\u653e\u5728\u540c\u4e00\u4e2a\u5c4f\u5e55\u4e0a\uff0c\u4ed6\u4eec\u603b\u662f\u4f1a\u8bf4\u540c\u6837\u7684\u4e8b\u60c5\u3002<\/p>\n<p>\u65e0\u804a\u3002<\/p>\n<p>\u8981\u6539\u53d8\u8fd9\u4e00\u70b9\uff0c\u6211\u4eec\u9700\u8981\u5b66\u4e60\u4e24\u4ef6\u4e8b\u60c5\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b66\u4e60\u5982\u4f55\u4f7f\u7ec4\u4ef6\u5728\u521b\u5efa\u65f6\u63a5\u53d7\u8f93\u5165\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u4eec\u9700\u8981\u5728\u7ec4\u4ef6\u4e0a\u8bbe\u7f6e\u503c\u3002\u6211\u4eec\u4f7f\u7528\u5c5e\u6027\u6765\u505a\u8fd9\u4ef6\u4e8b\u3002<\/p>\n<p>\uff08\u6211\u4eec\u9700\u8981\u5b66\u4e60\u7684\u7b2c\u4e8c\u4ef6\u4e8b\u662f\u5982\u4f55\u5b9e\u9645\u4f7f\u7528\u8fd9\u4e9b\u503c\u6765\u6539\u53d8\u7ec4\u4ef6\u7684\u884c\u4e3a\u548c\u8f93\u51fa\uff0c\u5728\u6211\u4eec\u5f04\u6e05\u695a\u5c5e\u6027\u4e4b\u540e\uff0c\u6211\u4eec\u4f1a\u8fd9\u6837\u505a\uff09\u3002<\/p>\n<p>\u7ec4\u4ef6\u4e0a\u7684\u5c5e\u6027\u5c31\u50cf\u5bf9\u8c61\u4e2d\u7684\u5b9e\u4f8b\u53d8\u91cf\u4e00\u6837\u3002\u8fd9\u662f\u4e00\u79cd\u4fdd\u5b58\u66f4\u6539\u503c\u7684\u65b9\u6cd5\uff0c\u4e5f\u662f\u4e00\u79cd\u547d\u540d\u8fd9\u4e9b\u503c\u5360\u4f4d\u7b26\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u60f3\u7f16\u5199\u4e00\u4e2a\u6253\u5370\u81ea\u5b9a\u4e49\u6d88\u606f\u7684helloMessage\u7ec4\u4ef6\u3002\u6211\u4eec\u53ef\u4ee5\u60f3\u8c61\u4e3a\u8fd9\u4e2a\u7ec4\u4ef6\u6dfb\u52a0\u4e00\u4e2a\u6d88\u606f\u5c5e\u6027\u6765\u5b9a\u5236\u5b83\u7684\u8f93\u51fa\u3002\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5c06\u7ec4\u4ef6\u6dfb\u52a0\u5230\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u65f6\u8bbe\u7f6e\u8be5\u6d88\u606f\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<div class=\"p\">\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n\t  \n    <span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"You look nice today.\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n\t    \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\">\n<p>\u60a8\u9700\u8981\u5c06\u5176\u6dfb\u52a0\u5230\u60a8\u7684\u7ec4\u7ec7\u4e2d\uff0c\u56e0\u4e3a\u6211\u4eec\u5c06\u7ee7\u7eed\u4f7f\u7528\u5b83\u3002\u4f46\u662f\uff0c\u5982\u679c\u4f60\u73b0\u5728\u505a\uff0c\u4f60\u4f1a\u5f97\u5230\u4e00\u4e2a\u9519\u8bef\u3002\u8fd9\u662f\u4e3a\u4ec0\u4e48\uff1f\u56e0\u4e3ahelloMessage\u7ec4\u4ef6\u8fd8\u4e0d\u5b58\u5728\u3002\u95ea\u7535\u7ec4\u4ef6\u5728\u60a8\u7f16\u5199\u4ee3\u7801\u65f6\u9a8c\u8bc1\u60a8\u7684\u4ee3\u7801\u3002\u5982\u679c\u4f60\u8bd5\u56fe\u4fdd\u5b58\u5b83\u77e5\u9053\u662f\u65e0\u6548\u7684\u4ee3\u7801\uff0c\u4f8b\u5982\u5f15\u7528\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u7ec4\u4ef6\uff0c\u4f60\u4f1a\u5f97\u5230\u4e00\u4e2a\u9519\u8bef\u3002\u6240\u4ee5\uff0c\u8ba9\u6211\u4eec\u5148\u5f04\u6e05\u695a\u5982\u4f55\u521b\u5efahelloMessage\u3002<br \/>\n\u60a8\u53ef\u4ee5\u5728\u521b\u5efa\u7ec4\u4ef6\u65f6\u8bbe\u7f6e\u7ec4\u4ef6\u7684\u5c5e\u6027\uff0c\u5c31\u50cf\u6211\u4eec\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\u6240\u505a\u7684\u90a3\u6837\u3002\u60a8\u8fd8\u53ef\u4ee5\u5728\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u7684\u8fc7\u7a0b\u4e2d\u66f4\u6539\u5b83\u4eec\uff0c\u4ee5\u54cd\u5e94\u7528\u6237\u91c7\u53d6\u7684\u64cd\u4f5c\u6216\u5176\u4ed6\u5730\u65b9\u53d1\u751f\u7684\u4e8b\u4ef6\u7b49\u7b49\u3002\u4f60\u5f53\u7136\u53ef\u4ee5\u7528\u8bb8\u591a\u4e0d\u540c\u7684\u65b9\u5f0f\u8bfb\u53d6\u548c\u4f7f\u7528\u5c5e\u6027\u503c\u3002\u5f53\u6211\u4eec\u5230\u8fbe\u8868\u8fbe\u5f0f\u65f6\uff0c\u6211\u4eec\u4f1a\u770b\u770b\u90a3\u4e9b\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u6765\u770b\u770b\u5982\u4f55\u5b9a\u4e49\u7ec4\u4ef6\u7684\u5c5e\u6027\u3002\u4f7f\u7528&lt;aura\uff1aattribute&gt;\u6807\u8bb0\u5b9a\u4e49\u5c5e\u6027\uff0c\u8be5\u6807\u8bb0\u9700\u8981\u540d\u79f0\u548c\u7c7b\u578b\u5c5e\u6027\u7684\u503c\uff0c\u5e76\u63a5\u53d7\u8fd9\u4e9b\u53ef\u9009\u5c5e\u6027\uff1adefault\uff0cdescription\uff0crequired\u3002<\/p>\n<p>\u54c7\uff0c\u8fd9\u662f\u5728\u53e5\u5b50\u4e2d\u4f7f\u7528\u201c\u5c5e\u6027\u201d\u7684\u5f88\u591a\u4e0d\u540c\u7684\u65b9\u6cd5\uff01\u5728\u8fd9\u91cc\u5f88\u5bb9\u6613\u6df7\u6dc6\uff0c\u56e0\u4e3a\u6211\u4eec\u6709\u4e09\u4e2a\u4e0d\u540c\u7684\u540d\u79f0\u76f8\u4f3c\u7684\u6982\u5ff5\u3002\u8ba9\u6211\u4eec\u5177\u4f53\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol class=\"ol enumList\">\n<li class=\"li\">\u7ec4\u4ef6\u5c5e\u6027\u662f\u53ef\u4ee5\u5b58\u50a8\u503c\u7684\u5730\u65b9\u3002\u5728\u524d\u9762\u7684\u4f8b\u5b50\u4e2d\uff0chelloMessage\u7ec4\u4ef6\u6709\u4e00\u4e2a\u540d\u4e3amessage\u7684\u7ec4\u4ef6\u5c5e\u6027\u3002\u5927\u591a\u6570\u65f6\u5019\u6211\u4eec\u6b63\u5728\u8ba8\u8bba\u7ec4\u4ef6\u5c5e\u6027\u3002<\/li>\n<li class=\"li\">\u60a8\u53ef\u4ee5\u4f7f\u7528&lt;aura\uff1aattribute&gt;\u6807\u7b7e\u5b9a\u4e49\u7ec4\u4ef6\u5c5e\u6027\u3002\u6211\u4eec\u7a0d\u540e\u4f1a\u770b\u5230\u4e00\u4e2a\u4f8b\u5b50\u3002\u6211\u4eec\u6765\u8c03\u7528\u8fd9\u4e9b\u5c5e\u6027\u5b9a\u4e49\u3002<\/li>\n<li class=\"li\">\u4f7f\u7528\u5b83\u65f6\uff0c&lt;aura\uff1aattribute&gt;\u6807\u7b7e\u672c\u8eab\u5c31\u5177\u6709\u5c5e\u6027\uff01 &#x1f616;\u4e5f\u5c31\u662f\u8bf4\uff0c\u4f7f\u7528&lt;aura\uff1aattribute&gt;\u6807\u8bb0\u5b9a\u4e49\u7ec4\u4ef6\u5c5e\u6027\u65f6\uff0c\u53ef\u4ee5\u5728&lt;aura\uff1aattribute&gt;\u4e0a\u8bbe\u7f6e\u5c5e\u6027\uff0c\u4ee5\u6307\u5b9a\u8981\u5b9a\u4e49\u7684\u7ec4\u4ef6\u5c5e\u6027\u7684\u201c\u5f62\u72b6\u201d\u3002 &#x1f621;\u7b49\u7b49\uff0c\u8ba9\u6211\u4eec\u518d\u8bd5\u4e00\u6b21\uff1a\u901a\u8fc7\u8bbe\u7f6e\u5c5e\u6027\u5b9a\u4e49\u7684\u5c5e\u6027\u6765\u6dfb\u52a0\u4e00\u4e2a\u7ec4\u4ef6\u5c5e\u6027\u5b9a\u4e49\u3002 component\u7ec4\u4ef6\u5c5e\u6027\u7684\u5c5e\u6027\u5b9a\u4e49\u662f\u5426\u5177\u6709\u5c5e\u6027\uff1f &#x1f634;<br \/>\n\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u4f5c\u5bb6&#x1f631;\u3002\u6211\u4eec\u8bd5\u7740\u7528\u4e00\u4e9b\u4ee3\u7801\u6765\u89e3\u51b3\u8fd9\u4e2a\u672f\u8bed\u95ee\u9898\u3002 &#x1f604;<\/li>\n<\/ol>\n<p class=\"p\">\u4e0b\u9762\u662f\u6211\u4eec\u7684helloMessage\u7ec4\u4ef6\u7684\u5f00\u59cb\uff1a<\/p>\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>attribute name<span class=\"token operator\">=<\/span><span class=\"token string\">\"message\"<\/span> type<span class=\"token operator\">=<\/span><span class=\"token string\">\"String\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span>Hello<span class=\"token operator\">!<\/span> <span class=\"token punctuation\">[<\/span> message goes here<span class=\"token punctuation\">,<\/span> soon <span class=\"token punctuation\">]<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n\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\">helloMessage\u7ec4\u4ef6\u5177\u6709\u4e00\u4e2a\u7ec4\u4ef6\u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u901a\u8fc7\u8bbe\u7f6e\u5c5e\u6027\u7684\u540d\u79f0\u548c\u7c7b\u578b\u6765\u5b9a\u4e49\u3002\u8be5\u5c5e\u6027\u7684\u540d\u79f0\u662f\u6d88\u606f\uff0c\u4e00\u65e6\u6211\u4eec\u4e86\u89e3\u8868\u8fbe\u5f0f\uff0c\u8fd9\u5c31\u662f\u4f60\u5982\u4f55\u5f15\u7528\u5b83\u3002\u5b83\u4ecd\u7136\u53ea\u8f93\u51fa\u9759\u6001\u6587\u672c\u548cHTML\uff0c\u4f46\u6211\u4eec\u6b63\u5728\u63a5\u8fd1\u6709\u7528\u7684\u4e1c\u897f\u3002<\/div>\n<\/div>\n<\/div>\n<p class=\"p\">&#x1f44d; ?<\/p>\n<p class=\"p\">\u6211\u4eec\u5728\u8fd9\u91cc\u4f7f\u7528\u7684\u53e6\u4e00\u4e2a\u5c5e\u6027\u662ftype\uff0c\u6211\u4eec\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u5b83\uff0c\u56e0\u4e3a\u5b83\u5728\u5c5e\u6027\u5b9a\u4e49\u4e2d\u662f\u5fc5\u9700\u7684\u3002\u5b83\u8bf4\u6d88\u606f\u5c5e\u6027\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u8fd9\u662f\u6709\u9053\u7406\u7684\u3002\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bba\u5c5e\u6027\u6570\u636e\u7c7b\u578b\u548c\u5c5e\u6027\u5b9a\u4e49\u7684\u5176\u4ed6\u90e8\u5206\uff0c\u4f46\u662f\u9996\u5148\u8ba9\u6211\u4eec\u5b66\u4e60\u8868\u8fbe\u5f0f\uff0c\u7136\u540e\u8ba9helloMessage\u5b9e\u9645\u4e0a\u505a\u4e00\u4e9b\u4e8b\u60c5\u3002<\/p>\n<\/div>\n<\/div>\n<div id=\"lex_dev_lc_basics_attr_expressions\" class=\"topic nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<h2 id=\"Tdxn4tBK-heading3\" class=\"helpHead2\"><span id=\"topic-title\" class=\"ph\">\u8868\u8fbe\u5f0f<\/span><\/h2>\n<div class=\"body\">\n<p class=\"p\">\u4e0d\u8981\u518d\u8ba9\u6211\u4eec\u8ff7\u5931\uff0c\u800c\u662f\u8ba9\u6211\u4eec\u6309\u7167\u9884\u671f\u4f7f\u7528helloMessage\u3002<\/p>\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>attribute name<span class=\"token operator\">=<\/span><span class=\"token string\">\"message\"<\/span> type<span class=\"token operator\">=<\/span><span class=\"token string\">\"String\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span>Hello<span class=\"token operator\">!<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n\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\">\u96be\u9053\u662f\u8fd9\u6837\u7684\u8fd8\u662f\u4ec0\u4e48\uff1f<\/div>\n<\/div>\n<\/div>\n<p>\u6211\u4eec\u4f7f\u7528\u8868\u8fbe\u5f0f{\uff01v.message}\u8f93\u51fa\u6d88\u606f\u7684\u5185\u5bb9\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u5f15\u7528\u4e86\u6d88\u606f\u5c5e\u6027\u3002\u8868\u8fbe\u5f0f\u88ab\u8bc4\u4f30\uff0c\u5e76\u89e3\u6790\u4e3a\u5f53\u524d\u5b58\u50a8\u5728\u6d88\u606f\u4e2d\u7684\u6587\u672c\u5b57\u7b26\u4e32\u3002\u8fd9\u5c31\u662f\u8868\u8fbe\u5f0f\u8f93\u51fa\u5230\u7ec4\u4ef6\u4e3b\u4f53\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u55ef&#8230;\u8fd9\u662f\u4ec0\u4e48\u201c\u8868\u8fbe\u201d\uff1f<\/p>\n<p>\u8868\u8fbe\u5f0f\u57fa\u672c\u4e0a\u662f\u4e00\u4e2a\u516c\u5f0f\u6216\u8ba1\u7b97\uff0c\u60a8\u5c06\u5176\u653e\u5728\u8868\u8fbe\u5f0f\u5206\u9694\u7b26\uff08\u201c{\uff01\u201d\u548c\u201c}\u201d\uff09\u4e2d\u3002\u6240\u4ee5\uff0c\u8868\u8fbe\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p class=\"p\"><samp>{!<em class=\"ph i\">&lt;expression&gt;<\/em>}<\/samp><\/p>\n<p>\u8868\u8fbe\u5f0f\u7684\u6b63\u5f0f\u5b9a\u4e49\u6709\u70b9\u4ee4\u4eba\u751f\u754f\uff0c\u4f46\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\uff0c\u7136\u540e\u89e3\u538b\u5b83\uff1a\u8868\u8fbe\u5f0f\u662f\u53ef\u4ee5\u89e3\u6790\u4e3a\u5355\u4e2a\u503c\u7684\u4efb\u4f55\u4e00\u7ec4\u5b57\u9762\u503c\uff0c\u53d8\u91cf\uff0c\u5b50\u8868\u8fbe\u5f0f\u6216\u8fd0\u7b97\u7b26\u3002<\/p>\n<p>\u662f\u7684\uff0c\u57fa\u672c\u4e0a\u662f\u4e00\u4e2a\u516c\u5f0f\uff0c\u5c31\u50cf\u4f60\u5728\u8ba1\u7b97\u9886\u57df\uff0c\u8fc7\u6ee4\u6807\u51c6\u6216Visualforce\u4e2d\u5199\u7684\u4e00\u6837\u3002\u516c\u5f0f\u6216\u8868\u8fbe\u5f0f\u53ef\u4ee5\u5305\u542b\u5404\u79cd\u5404\u6837\u7684\u4e1c\u897f\u3002\u5b57\u9762\u503c\u5e94\u8be5\u662f\u663e\u800c\u6613\u89c1\u7684;\u4ed6\u4eec\u662f\u50cf\u6570\u5b5742\uff0c\u6216\u5b57\u7b26\u4e32\u201c\u4f60\u597d\u201d\u7684\u4e1c\u897f\u3002\u53d8\u91cf\u5c31\u50cf\u6d88\u606f\u5c5e\u6027\u4e00\u6837\u3002\u8fd0\u7b97\u7b26\u5c31\u50cf+\uff0c &#8211; \u7b49\u7b49\uff0c\u5b50\u8868\u8fbe\u5f0f\u57fa\u672c\u4e0a\u610f\u5473\u7740\u4f60\u53ef\u4ee5\u4f7f\u7528\u62ec\u53f7\u628a\u4e8b\u7269\u5206\u7ec4\u5728\u4e00\u8d77\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u8bd5\u8bd5\u8fd9\u4e2a\uff0c\u8ba9\u6211\u4eec\u7684\u8868\u60c5\u7a0d\u5fae\u590d\u6742\u4e00\u4e9b\u3002<\/p>\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>attribute name<span class=\"token operator\">=<\/span><span class=\"token string\">\"message\"<\/span> type<span class=\"token operator\">=<\/span><span class=\"token string\">\"String\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token operator\">!<\/span><span class=\"token string\">'Hello! '<\/span> <span class=\"token operator\">+<\/span> v<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n\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\">\u6211\u4eec\u6240\u505a\u7684\u5c31\u662f\u5c06\u201cHello\u201d\u90e8\u5206\u4ece\u8868\u8fbe\u5f0f\u5916\u90e8\u7684\u9759\u6001\u6587\u672c\u79fb\u52a8\u5230\u8868\u8fbe\u5f0f\u4e2d\u7684\u6587\u672c\u6587\u672c\u3002\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u4f7f\u7528\u201c+\u201d\u8fd0\u7b97\u7b26\u5c06\u4e24\u4e2a\u5b57\u7b26\u4e32\u8fde\u63a5\u5728\u4e00\u8d77\u3002\u8fd9\u53ef\u80fd\u770b\u8d77\u6765\u50cf\u4e00\u4e2a\u5f88\u5c0f\u7684\u5dee\u5f02\uff0c\u4f46\u79fb\u52a8\u8868\u8fbe\u5f0f\u4e2d\u7684\u95ee\u5019\u8bed\u6587\u672c\u53ef\u4ee5\u4f7f\u7528\u6807\u7b7e\uff0c\u800c\u4e0d\u662f\u6587\u672c\u6587\u672c\uff0c\u8fd9\u4f7f\u5f97\u66f4\u65b0\uff08\u548c\u7ffb\u8bd1\uff09\u7ec4\u4ef6\u66f4\u5bb9\u6613\u3002\u4f8b\u5982\uff1a<\/div>\n<\/div>\n<\/div>\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token punctuation\">{<\/span><span class=\"token operator\">!<\/span>$Label<span class=\"token punctuation\">.<\/span>c<span class=\"token punctuation\">.<\/span>Greeting <span class=\"token operator\">+<\/span> v<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\">\n<p>\u4f60\u6ce8\u610f\u5230\u6211\u4eec\u5bf9\u8868\u8fbe\u5f0f\u7684\u6b63\u5f0f\u5b9a\u4e49\u6709\u4ec0\u4e48\u9057\u6f0f\u5417\uff1f JavaScript\u51fd\u6570\u8c03\u7528\u3002 Lightning Components\u6807\u8bb0\u4e2d\u7684\u8868\u8fbe\u5f0f\u4e2d\u4e0d\u80fd\u4f7f\u7528JavaScript\u3002<\/p>\n<p>\u5728\u6211\u4eec\u7ee7\u7eed\u4e4b\u524d\uff0c\u5173\u4e8e\u8868\u60c5\u7684\u6700\u540e\u4e00\u4ef6\u4e8b\u3002\u60a8\u53ef\u4ee5\u5c06\u5b83\u4eec\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u7ec4\u4ef6\u6765\u8bbe\u7f6e\u8be5\u7ec4\u4ef6\u4e0a\u7684\u503c\u3002\u8fd9\u662f\u4e00\u4e2a\u5c06\u81ea\u5b9a\u4e49\u503c\u4f20\u9012\u7ed9helloMessage\u7ec4\u4ef6\u7684\u65b0\u7ec4\u4ef6\u3002\u5c06\u503c\u4f20\u9012\u7ed9\u5176\u4ed6\u7ec4\u4ef6\u4f1a\u8986\u76d6\u8be5\u7ec4\u4ef6\u4e0a\u7684\u503c\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"p\">\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>attribute name<span class=\"token operator\">=<\/span><span class=\"token string\">\"customMessage\"<\/span> type<span class=\"token operator\">=<\/span><span class=\"token string\">\"String\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.customMessage}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span> <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>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<\/div>\n<p>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"lex_dev_lc_basics_attr_value_providers\" class=\"topic nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<h2 id=\"Tdxn4tBK-heading4\" class=\"helpHead2\"><span id=\"topic-title\" class=\"ph\">\u4ef7\u503c\u63d0\u4f9b\u8005<\/span><\/h2>\n<div class=\"body\">\n<p>\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u9700\u8981\u8c08\u8c08\u8868\u60c5\u7684\u53e6\u4e00\u4e2a\u65b9\u9762\u3002\u5728\u524d\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u7528v.message\u5f15\u7528\u4e86helloMessage\u7ec4\u4ef6\u7684\u6d88\u606f\u5c5e\u6027\u3002\u4ec0\u4e48\u662f\u201cv\u201d\u90e8\u5206\uff1f<\/p>\n<p>v\u662f\u6240\u8c13\u7684\u4ef7\u503c\u63d0\u4f9b\u8005\u3002\u4ef7\u503c\u63d0\u4f9b\u8005\u662f\u5206\u7ec4\uff0c\u5c01\u88c5\u548c\u8bbf\u95ee\u76f8\u5173\u6570\u636e\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u4ef7\u503c\u63d0\u4f9b\u8005\u662f\u4e00\u4e2a\u590d\u6742\u7684\u8bdd\u9898\uff0c\u6240\u4ee5\u73b0\u5728\u628av\u60f3\u8c61\u6210\u4e00\u4e2a\u53ef\u4f9b\u4f60\u4f7f\u7528\u7684\u81ea\u52a8\u53d8\u91cf\u3002\u5728\u6211\u4eec\u7684\u7ec4\u4ef6\u4e2d\uff0cv\u662f\u89c6\u56fe\u7684\u503c\u63d0\u4f9b\u8005\uff0c\u5b83\u662fhelloMessage\u7ec4\u4ef6\u672c\u8eab\u3002<\/p>\n<p>v\u7ed9\u4f60\u4e00\u4e2a\u201c\u94a9\u5b50\u201d\u6765\u8bbf\u95ee\u7ec4\u4ef6\u7684\u6d88\u606f\u5c5e\u6027\uff0c\u8fd9\u5c31\u662f\u4f60\u5982\u4f55\u8bbf\u95ee\u7ec4\u4ef6\u7684\u6240\u6709\u5c5e\u6027\u3002<\/p>\n<p>\u503c\u63d0\u4f9b\u8005\u4e2d\u7684\u503c\u4f5c\u4e3a\u547d\u540d\u5c5e\u6027\u88ab\u8bbf\u95ee\u3002\u8981\u4f7f\u7528\u503c\uff0c\u8bf7\u4f7f\u7528\u70b9\uff08\u53e5\u70b9\uff09\u5206\u9694\u503c\u63d0\u4f9b\u7a0b\u5e8f\u548c\u5c5e\u6027\u540d\u79f0\u3002\u4f8b\u5982\uff0cv.message\uff0c\u6b63\u5982\u6211\u4eec\u6240\u89c1\u3002<\/p>\n<p>\u5f53\u7ec4\u4ef6\u7684\u5c5e\u6027\u662f\u5bf9\u8c61\u6216\u5176\u4ed6\u7ed3\u6784\u5316\u6570\u636e\uff08\u5373\u4e0d\u662f\u539f\u59cb\u503c\uff09\u65f6\uff0c\u4f7f\u7528\u76f8\u540c\u7684\u70b9\u7b26\u53f7\u8bbf\u95ee\u8be5\u5c5e\u6027\u4e0a\u7684\u503c\u3002\u4f8b\u5982\uff0c{\uff01v.account.Id}\u8bbf\u95ee\u5e10\u6237\u8bb0\u5f55\u7684Id\u5b57\u6bb5\u3002\u5bf9\u4e8e\u6df1\u5ea6\u5d4c\u5957\u7684\u5bf9\u8c61\u548c\u5c5e\u6027\uff0c\u7ee7\u7eed\u6dfb\u52a0\u70b9\u6765\u904d\u5386\u7ed3\u6784\u5e76\u8bbf\u95ee\u5d4c\u5957\u7684\u503c\u3002<\/p>\n<\/div>\n<\/div>\n<div id=\"lex_dev_lc_basics_attr_data_types\" class=\"topic nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<h2 id=\"Tdxn4tBK-heading5\" class=\"helpHead2\"><span id=\"topic-title\" class=\"ph\">\u5c5e\u6027\u6570\u636e\u7c7b\u578b<\/span><\/h2>\n<div class=\"body\">\n<p class=\"p\">\u8bbf\u95ee\u7ed3\u6784\u5316\u6570\u636e\u662f\u8ba8\u8bba\u5c5e\u6027\u7684\u4e00\u4e2a\u5f88\u597d\u7684\u90e8\u5206\uff0c\u7279\u522b\u662f\u5173\u4e8e\u975e\u57fa\u672c\u5c5e\u6027\u7c7b\u578b\u3002\u6d88\u606f\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u4f46\u662f\u6709\u8bb8\u591a\u4e0d\u540c\u7684\u5c5e\u6027\u7c7b\u578b\u3002<\/p>\n<ul class=\"ul bulletList\">\n<li class=\"li\">\u539f\u59cb\u6570\u636e\u7c7b\u578b\uff0c\u5982\u5e03\u5c14\u503c\uff0c\u65e5\u671f\uff0c\u65e5\u671f\u65f6\u95f4\uff0c\u5341\u8fdb\u5236\uff0c\u53cc\u7cbe\u5ea6\uff0c\u6574\u6570\uff0c\u957f\u6216\u5b57\u7b26\u4e32\u3002\u4efb\u4f55\u7f16\u7a0b\u8bed\u8a00\u901a\u5e38\u7684\u4f7f\u7528\u7684\u3002<\/li>\n<li class=\"li\">\u6807\u51c6\u548c\u81ea\u5b9a\u4e49Salesforce\u5bf9\u8c61\uff0c\u4f8b\u5982Account\u6216MyCustomObject__c\u3002<\/li>\n<li class=\"li\">\u96c6\u5408\uff0c\u4f8b\u5982List\uff0cMap\u548cSet\u3002<\/li>\n<li class=\"li\">\u81ea\u5b9a\u4e49Apex\u7c7b\u3002<\/li>\n<li class=\"li\">\u7279\u5b9a\u4e8e\u6846\u67b6\u7684\u7c7b\u578b\uff0c\u5982Aura.Component\u6216Aura.Component []\u3002\u8fd9\u4e9b\u6bd4\u6211\u4eec\u5728\u8fd9\u4e2a\u6a21\u5757\u4e2d\u4f1a\u66f4\u5148\u8fdb\uff0c\u4f46\u662f\u4f60\u5e94\u8be5\u77e5\u9053\u5b83\u4eec\u5b58\u5728\u3002<\/li>\n<\/ul>\n<p class=\"p\">\u8fd9\u662f\u4e00\u4e2a\u7cbe\u7b80\u7684\u8d39\u7528\u9879\u76ee\u7ec4\u4ef6\uff0c\u6211\u4eec\u5c06\u5728\u7a0d\u540e\u586b\u5199\u3002\u5b83\u6f14\u793a\u4e86\u5982\u4f55\u4e3a\u81ea\u5b9a\u4e49\u5bf9\u8c61\u5b9a\u4e49\u5c5e\u6027\uff0c\u4ee5\u53ca\u5982\u4f55\u8bbf\u95ee\u8bb0\u5f55\u4e2d\u7684\u5b57\u6bb5\u3002<\/p>\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>attribute name<span class=\"token operator\">=<\/span><span class=\"token string\">\"expense\"<\/span> type<span class=\"token operator\">=<\/span><span class=\"token string\">\"Expense__c\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span>Amount<span class=\"token operator\">:<\/span>\n        <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">:<\/span>formattedNumber value<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.expense.Amount__c}\"<\/span> style<span class=\"token operator\">=<\/span><span class=\"token string\">\"currency\"<\/span><span class=\"token operator\">\/<\/span><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>p<span class=\"token operator\">&gt;<\/span>\n        Client<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token operator\">!<\/span>v<span class=\"token punctuation\">.<\/span>expense<span class=\"token punctuation\">.<\/span>Client__c<span class=\"token punctuation\">}<\/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>p<span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>lightning<span class=\"token operator\">:<\/span>input type<span class=\"token operator\">=<\/span><span class=\"token string\">\"toggle\"<\/span>                            \n                         label<span class=\"token operator\">=<\/span><span class=\"token string\">\"Reimbursed?\"<\/span>                           \n                         name<span class=\"token operator\">=<\/span><span class=\"token string\">\"reimbursed\"<\/span>                         \n                         checked<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.expense.Reimbursed__c}\"<\/span> <span class=\"token operator\">\/<\/span><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> Other markup here <span class=\"token operator\">--<\/span><span class=\"token operator\">&gt;<\/span>\n\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\">\u8fd9\u4e2a\u7ec4\u4ef6\u6709\u4e00\u4e2a\u5c5e\u6027\uff0c\u5f00\u9500\uff0c\u8fd9\u662f\u6211\u4eec\u5728\u672c\u6a21\u5757\u5f00\u59cb\u65f6\u521b\u5efa\u7684\u81ea\u5b9a\u4e49\u5bf9\u8c61\u3002\u8be5\u7ec4\u4ef6\u7684\u76ee\u7684\u662f\u901a\u8fc7\u4f7f\u7528{\uff01v.expense.fieldName}\u8868\u8fbe\u5f0f\u5f15\u7528Expense__c\u8bb0\u5f55\u4e2d\u7684\u5b57\u6bb5\u6765\u663e\u793a\u8d39\u7528\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u6211\u4eec\u4f7f\u7528\u7c7b\u578b=\u201ctoggle\u201d\u7684&lt;lightning\uff1ainput&gt;\u7ec4\u4ef6\uff0c\u8fd9\u662f\u4e00\u4e2a\u5207\u6362\u5f62\u5f0f\u7684\u590d\u9009\u6846\uff0c\u4ee5\u4fbf\u6211\u4eec\u7a0d\u540e\u53ef\u4ee5\u66f4\u65b0UI\u4e2d\u7684\u503c\u3002<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"lex_dev_lc_basics_attr_other\" class=\"topic nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<h2><\/h2>\n<h2 id=\"Tdxn4tBK-heading6\" class=\"helpHead2\"><span id=\"topic-title\" class=\"ph\">\u5176\u4ed6\u65b9\u9762\u7684\u5c5e\u6027\u5b9a\u4e49<\/span><\/h2>\n<div class=\"body\">\n<p class=\"p\">\u5f53\u6d89\u53ca\u5230\u60a8\u5728&lt;aura\uff1aattribute&gt;\u6807\u7b7e\u4e0a\u8bbe\u7f6e\u7684\u5c5e\u6027\u65f6\uff0c\u4ee5\u4e0b\u662f\u60a8\u9700\u8981\u4e86\u89e3\u7684\u5176\u4f59\u90e8\u5206\u3002<\/p>\n<ul class=\"ul bulletList\">\n<li class=\"li\">\u9ed8\u8ba4\u5c5e\u6027\u5b9a\u4e49\u4e86\u9ed8\u8ba4\u7684\u5c5e\u6027\u503c\u3002\u5b83\u5728\u5f15\u7528\u5c5e\u6027\u65f6\u4f7f\u7528\uff0c\u4f46\u5c1a\u672a\u8bbe\u7f6e\u8be5\u5c5e\u6027\u7684\u503c\u3002<\/li>\n<li class=\"li\">\u5fc5\u9700\u7684\u5c5e\u6027\u5b9a\u4e49\u5c5e\u6027\u662f\u5426\u662f\u5fc5\u9700\u7684\u3002\u9ed8\u8ba4\u503c\u662ffalse\u3002<\/li>\n<li class=\"li\">description\u5c5e\u6027\u5b9a\u4e49\u4e86\u5c5e\u6027\u53ca\u5176\u7528\u6cd5\u7684\u7b80\u8981\u6458\u8981\u3002<\/li>\n<\/ul>\n<p class=\"p\">\u4e3a\u5177\u6709\u590d\u6742\u6570\u636e\u7c7b\u578b\u7684\u5c5e\u6027\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u53ef\u80fd\u6709\u4e9b\u68d8\u624b\u3002\u4e0d\u8fc7\uff0c\u6211\u4eec\u7a0d\u540e\u4f1a\u770b\u5230\u4e00\u4e2a\u4f8b\u5b50\uff0c\u6240\u4ee5\u73b0\u5728\u6211\u4eec\u53ea\u662f\u628a\u4f60\u7684\u5934\u62ac\u8d77\u6765\u3002<\/p>\n<\/div>\n<\/div>\n<div id=\"lex_dev_lc_basics_attr_fun\" class=\"topic nested0\" lang=\"en-us\" xml:lang=\"en-us\">\n<h2 id=\"Tdxn4tBK-heading7\" class=\"helpHead2\"><span id=\"topic-title\" class=\"ph\">\u4e50\u8da3\u4e0e\u5c5e\u6027\u548c\u8868\u8fbe\u5f0f<\/span><\/h2>\n<div class=\"body\">\n<p class=\"p\">\u4e3a\u4e86\u8bf4\u660e\u66f4\u591a\u5173\u4e8e\u5c5e\u6027\u548c\u8868\u8fbe\u5f0f\u7684\u6982\u5ff5\uff0c\u8ba9\u6211\u4eec\u7528\u4e0b\u9762\u7684\u6807\u8bb0\u521b\u5efa\u4e00\u4e2a\u975e\u5e38\u611a\u8822\u7684\u7ec4\u4ef6helloPlayground\u3002<\/p>\n<div class=\"codeblock\">\n<pre class=\"line-numbers code-toolbar language-java\"><code class=\" language-java\"><span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>component<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>attribute name<span class=\"token operator\">=<\/span><span class=\"token string\">\"messages\"<\/span> type<span class=\"token operator\">=<\/span><span class=\"token string\">\"List\"<\/span>\n        <span class=\"token keyword\">default<\/span><span class=\"token operator\">=<\/span>\"<span class=\"token punctuation\">[<\/span><span class=\"token string\">'You look nice today.'<\/span><span class=\"token punctuation\">,<\/span>\n            <span class=\"token string\">'Great weather we\\'re having.'<\/span><span class=\"token punctuation\">,<\/span>\n            <span class=\"token string\">'How are you?'<\/span><span class=\"token punctuation\">]<\/span>\"<span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span>\n\n\n    <span class=\"token operator\">&lt;<\/span>h1<span class=\"token operator\">&gt;<\/span>Hello Playground<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>h1<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span>Silly fun with attributes and expressions<span class=\"token punctuation\">.<\/span>&lt;<span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n\n\n    <span class=\"token operator\">&lt;<\/span>h2<span class=\"token operator\">&gt;<\/span>List Items<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>h2<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.messages[0]}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><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>p<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.messages[1]}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><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>p<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.messages[2]}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n\n\n    <span class=\"token operator\">&lt;<\/span>h2<span class=\"token operator\">&gt;<\/span>List Iteration<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>h2<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span>iteration items<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.messages}\"<\/span> var<span class=\"token operator\">=<\/span><span class=\"token string\">\"msg\"<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!msg}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><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>aura<span class=\"token operator\">:<\/span>iteration<span class=\"token operator\">&gt;<\/span>\n\n\n    <span class=\"token operator\">&lt;<\/span>h2<span class=\"token operator\">&gt;<\/span>Conditional Expressions and Global Value Providers<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>h2<span class=\"token operator\">&gt;<\/span>\n\n    <span class=\"token operator\">&lt;<\/span>aura<span class=\"token operator\">:<\/span><span class=\"token keyword\">if<\/span> isTrue<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!$Browser.isIPhone}\"<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.messages[0]}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><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>aura<span class=\"token operator\">:<\/span>set attribute<span class=\"token operator\">=<\/span><span class=\"token string\">\"else\"<\/span><span class=\"token operator\">&gt;<\/span>\n        <span class=\"token operator\">&lt;<\/span>p<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&lt;<\/span>c<span class=\"token operator\">:<\/span>helloMessage message<span class=\"token operator\">=<\/span><span class=\"token string\">\"{!v.messages[1]}\"<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><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>aura<span class=\"token operator\">:<\/span>set<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>aura<span class=\"token operator\">:<\/span><span class=\"token keyword\">if<\/span><span class=\"token operator\">&gt;<\/span>\n\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>\n<\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\">\n<p>\u73b0\u5728\u5c06helloPlayground\u7ec4\u4ef6\u6dfb\u52a0\u5230\u4f60\u7684\u7ebf\u675f\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u770b\u770b\u5b83\u662f\u5982\u4f55\u8fd0\u884c\u7684\uff01<\/p>\n<p>\u8fd9\u91cc\u6709\u5f88\u591a\u65b0\u4e1c\u897f\u3002\u6211\u4eec\u73b0\u5728\u4e0d\u4f1a\u5bf9\u5b83\u4eec\u8fdb\u884c\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u4f46\u662f\u4f60\u4f1a\u518d\u6b21\u770b\u5230\u6240\u6709\u8fd9\u4e9b\u3002<\/p>\n<p>\u9996\u5148\uff0chelloPlayground\u6709\u4e00\u4e2a\u5c5e\u6027\u6d88\u606f\uff0c\u8fd9\u662f\u4e00\u4e2a\u590d\u6742\u7684\u6570\u636e\u7c7b\u578bList\u3002\u5b83\u6709\u4e00\u4e2a\u9ed8\u8ba4\u503c\u7684\u5217\u8868\uff0c\u8fd9\u662f\u4e00\u4e2a\u7531\u9017\u53f7\u5206\u9694\u7684\u4e09\u4e2a\u5355\u5f15\u53f7\u5b57\u7b26\u4e32\u7ec4\u6210\u7684\u6570\u7ec4\u3002\u800c\u4e14\uff0c\u5728\u201c\u5217\u8868\u9879\u201d\u90e8\u5206\u4e2d\uff0c\u60a8\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6bcf\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n<p>\u5982\u679c\u6709\u4eba\u7528\u4e24\u6761\u6d88\u606f\u521b\u5efa\u4e00\u4e2a&lt;c\uff1ahelloPlayground&gt;\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f\u8bbf\u95ee\u7b2c\u4e09\u4e2a\u9879\u76ee\u5c06\u5931\u8d25\uff0c\u867d\u7136\u5b83\u4e0d\u4f1a\u5bfc\u81f4\u5d29\u6e83\uff0c\u4f46\u53ef\u80fd\u4f1a\u6709\u66f4\u590d\u6742\u7684\u7ec4\u4ef6\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5728List 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