{"id":32538,"date":"2024-11-25T12:08:58","date_gmt":"2024-11-25T04:08:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/32538\/"},"modified":"2024-11-25T12:08:58","modified_gmt":"2024-11-25T04:08:58","slug":"%e5%88%97%e8%a1%a8%e6%b8%b2%e6%9f%93wxkey%e7%9a%84%e4%bd%9c%e7%94%a8%e4%bb%a5%e5%8f%8a%e6%9d%a1%e4%bb%b6%e6%b8%b2%e6%9f%93-wxif-%e4%b8%8e-hidden%e4%b9%8b%e9%97%b4%e7%9a%84%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/32538\/","title":{"rendered":"\u5217\u8868\u6e32\u67d3wx:key\u7684\u4f5c\u7528\u4ee5\u53ca\u6761\u4ef6\u6e32\u67d3 wx:if \u4e0e hidden\u4e4b\u95f4\u7684\u533a\u522b"},"content":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5e26\u6765\u7684\u5185\u5bb9\u662f\u5173\u4e8e\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u4f7f\u7528async\/await\u8bed\u6cd5\u7684\u65b9\u6cd5\uff08\u4ee3\u7801\u793a\u4f8b\uff09\uff0c\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u6709\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u5f00\u53d1\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u79bb\u4e0d\u5f00\u201c\u9875\u9762\u6e32\u67d3\u201d\uff0c\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\u5f88\u96be\u7406\u89e3\u5c0f\u7a0b\u5e8f\u91cc\u7684\u201c\u9875\u9762\u6e32\u67d3\u201d\u662f\u4ec0\u4e48\u3001\u600e\u4e48\u7528\uff1f<br \/>\u800c\u5b66\u8fc7 vue \u7684\u540c\u5b66\u6765\u8bf4\uff0c\u8fd9\u4e2a\u5c31\u6bd4\u8f83\u719f\u6089\u4e86\uff0c\u5b9e\u9645\u4e0a\u5c31\u662f\u6570\u636e\u7ed1\u5b9a\u9875\u9762\u6e32\u67d3\u3002<br \/>\u90a3\u4e48\u5173\u4e8e\u9875\u9762\u6e32\u67d3\u6700\u91cd\u8981\u7684\u662f\u5217\u8868\u6e32\u67d3\u548c\u6761\u4ef6\u6e32\u67d3\u8fd9\u4e24\u5757\uff0c\u5148\u6765\u770b\u770b\u51e0\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e2a\u201c<strong>\u5217\u8868\u6e32\u67d3<\/strong>\u201d\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>&lt;view wx:for=\"{{array}}\"&gt;\n  {{index}}: {{item.message}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    <\/p>\n<pre>Page({\n  data: {\n    array: [{\n      message: 'foo',\n    }, {\n      message: 'bar'\n    }]\n  }\n})<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0a\u9762\u7684\u4f8b\u5b50\u53ef\u4ee5\u770b\u51fa\uff0c\u9ed8\u8ba4\u6570\u7ec4\u7684\u5f53\u524d\u9879\u7684\u4e0b\u6807\u53d8\u91cf\u540d\u9ed8\u8ba4\u4e3a index\uff0c\u6570\u7ec4\u5f53\u524d\u9879\u7684\u53d8\u91cf\u540d\u9ed8\u8ba4\u4e3a item\u3002\u5f53\u7136\uff0c\u4f7f\u7528 wx:for-item \u53ef\u4ee5\u6307\u5b9a\u6570\u7ec4\u5f53\u524d\u5143\u7d20\u7684\u53d8\u91cf\u540d\uff0c\u4f7f\u7528 wx:for-index \u53ef\u4ee5\u6307\u5b9a\u6570\u7ec4\u5f53\u524d\u4e0b\u6807\u7684\u53d8\u91cf\u540d\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre>&lt;view wx:for=\"{{array}}\" wx:for-index=\"idx\" wx:for-item=\"itemName\"&gt;\n  {{idx}}: {{itemName.message}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0b\u9762\u662f\u4e2a\u201c<strong>\u6761\u4ef6\u6e32\u67d3<\/strong>\u201d\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>&lt;view wx:if=\"{{condition}}\"&gt;True&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    <\/p>\n<pre>Page({\n  data: {\n    condition: true\n  }\n})<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0a\u9762\u7684\u4f8b\u5b50\u8bf4\u660e\uff0c\u5f53 condition \u4e3a\u771f\u65f6\uff0c\u9875\u9762\u6e32\u67d3\u4e0a\u9762\u7684 view \u6807\u7b7e\u3002\u5f53\u7136\u4e5f\u53ef\u4ee5\u7528 wx:elif \u548c wx:else \u6765\u6dfb\u52a0\u4e00\u4e2a else \u5757\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre>&lt;view wx:if=\"{{length &gt; 5}}\"&gt;1&lt;\/view&gt;\n&lt;view wx:elif=\"{{length &gt; 2}}\"&gt;2&lt;\/view&gt;\n&lt;view wx:else&gt;3&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><em>\u4e0b\u9762\u63a5\u5165\u6b63\u9898\uff0c\u63a2\u7d22\u6587\u7ae0\u9898\u76ee\u7684\u7591\u95ee<\/em><\/p>\n<p><strong>\u4e00\u3001 \u5217\u8868\u6e32\u67d3\u4e2d\u7684 wx:key \u6709\u4ec0\u4e48\u4f5c\u7528<\/strong><\/p>\n<p>\u5176\u5b9e\u521d\u6b21\u770b \u5b98\u65b9\u6587\u6863 \u53ef\u80fd\u4f1a\u5bf9 wx:key \u6709\u70b9\u61f5\uff0c\u5b98\u65b9\u89e3\u91ca\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/572\/509\/753\/1550297143407791.png\" class=\"aligncenter\" title=\"\u5217\u8868\u6e32\u67d3wx:key\u7684\u4f5c\u7528\u4ee5\u53ca\u6761\u4ef6\u6e32\u67d3 wx:if \u4e0e hidden\u4e4b\u95f4\u7684\u533a\u522b\u63d2\u56fe\" alt=\"\u5217\u8868\u6e32\u67d3wx:key\u7684\u4f5c\u7528\u4ee5\u53ca\u6761\u4ef6\u6e32\u67d3 wx:if \u4e0e hidden\u4e4b\u95f4\u7684\u533a\u522b\u63d2\u56fe\" \/><\/p>\n<p>\u6839\u636e\u6211\u591a\u5e74\u770b\u6587\u6863\u7ecf\u9a8c\uff0c\u4e00\u822c\u6211\u770b\u4e0d\u61c2\u7684\u53ef\u4ee5\u5ffd\u7565\u4e0d\u91cd\u8981\u7684\u6587\u5b57\uff0c\u53ea\u9700\u5173\u6ce8\u91cd\u70b9\uff0c\u4f8b\u5982\u4e0a\u56fe\u7684\u6587\u5b57\u52a0\u7c97\u90e8\u5206\uff0c\u56e0\u6b64\uff0c\u4e00\u5f00\u59cb\u6211\u9009\u62e9\u4e0d\u5199 wx:key \u8fd9\u4e2a\u5c5e\u6027\u3002\u7136\u800c\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5199\u591a\u4e86\u5217\u8868\u6e32\u67d3\uff08\u800c\u6ca1\u6709\u52a0 wx:key\uff09\u4e4b\u540e\uff0c\u63a7\u5236\u53f0\u4f1a\u62a5\u5f88\u591a\u7684 wx:key \u7684\u8b66\u544a\uff0c\u5bf9\u4e8e\u6709\u70b9\u4ee3\u7801\u6d01\u7656\u7684\u6211\u770b\u8d77\u6765\u5f88\u4e0d\u723d\uff0c\u4f46\u53c8\u82e6\u4e8e\u4e0d\u6e05\u695a wx:key \u7684\u771f\u6b63\u4f5c\u7528\uff0c\u4e8e\u662f\u81ea\u521b\u4e86\u4e00\u4e2a\u89e3\u51b3\u529e\u6cd5\uff0c\u90a3\u5c31\u662f\u5728\u6bcf\u4e2a\u5217\u8868\u6e32\u67d3\u540e\u9762\u52a0\u4e0a wx:key=&#8221;{{index}}&#8221;\uff0c\u7c7b\u4f3c\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n<pre>&lt;view wx:for=\"{{array}}\" wx:key=\"{{index}}\"&gt;\n  {{item}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e8e\u662f\u6211\u60ca\u5947\u5730\u53d1\u73b0\u8b66\u544a\u7edf\u7edf\u4e0d\u89c1\u4e86\uff0c\u4e5f\u6ca1\u6709\u5176\u4ed6\u8d1f\u9762\u5f71\u54cd\uff0c\u4e8e\u662f\u6211\u5c31\u8fd9\u6837\u7528\u4e86\u5927\u534a\u5e74\u3002<br \/>\u7136\u800c\uff0c\u534a\u5e74\u524d\u6211\u505a\u7684\u4e00\u4e2a\u9879\u76ee\u91cc\u9762\u6709\u4e2a\u5217\u8868\u6e32\u67d3\u9700\u8981\u8bd5\u8bd5\u83b7\u53d6\u7528\u6237\u5934\u50cf\u548c\u6635\u79f0\uff0c\u4e8e\u662f\u6211\u4e4b\u524d\u7684\u505a\u6cd5\u4e0d\u7ba1\u7528\u4e86\uff0c\u6bcf\u6b21\u83b7\u53d6\u5230\u7684\u7528\u6237\u4fe1\u606f\u8ddf\u5f53\u524d\u5185\u5bb9\u4e0d\u5bf9\u5e94\uff0c\u5e76\u4e14\u4f1a\u53d1\u751f\u9519\u4e71\u3002\u4e8e\u662f\u6211\u91cd\u65b0\u7406\u89e3\u4e86\u4e00\u904d wx:key\uff0c\u7ed3\u5408\u4e0b\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u4f3c\u4e4e\u660e\u767d\u4e86\uff1a<\/p>\n<pre>&lt;switch wx:for=\"{{objectArray}}\" wx:key=\"unique\" style=\"display: block;\"&gt;\n  {{item.id}}\n&lt;\/switch&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    <\/p>\n<pre>Page({\n  data: {\n    objectArray: [\n      {id: 5, unique: 'unique_5'},\n      {id: 4, unique: 'unique_4'},\n      {id: 3, unique: 'unique_3'},\n      {id: 2, unique: 'unique_2'},\n      {id: 1, unique: 'unique_1'},\n      {id: 0, unique: 'unique_0'},\n    ]\n  }\n})<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u5b9e\uff0cwx:key \u662f\u7528\u6765\u7ed1\u5b9a\u5f53\u524d\u5217\u8868\u4e2d\u7684\u9879\u76ee\u7279\u5f81\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u5217\u8868\u662f\u52a8\u6001\u66f4\u65b0\u7684\uff0c\u90a3\u4e48 wx:key \u7684\u4f5c\u7528\u662f\u4fdd\u6301\u539f\u6709\u9879\u76ee\u7684\u6574\u4e2a\u72b6\u6001\u4e0d\u53d8\u3002<br \/>\u7ed3\u5408\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\uff0c\u5bf9\u4e8e\u5217\u8868\u6570\u7ec4\u662f\u4e2a\u5bf9\u8c61\u6570\u7ec4\uff0c\u90a3\u4e48 wx:key \u5c5e\u6027\u76f4\u63a5\u5199\u5bf9\u5e94\u7684\u552f\u4e00\u7684\u5c5e\u6027\u540d\u5c31\u53ef\u4ee5\u4e86\uff0c\u6bd4\u5982\u4e0a\u9762\u7684 wx:key=&#8221;unique&#8221;\uff0c \u6216\u8005 wx:key=&#8221;id&#8221; \u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u53ea\u8981\u4fdd\u6301\u5c5e\u6027\u662f\u552f\u4e00\u503c\u5c31\u884c\u4e86\uff0c\u6709\u70b9\u7c7b\u4f3c\u9875\u9762\u6807\u7b7e\u91cc\u9762\u7684 id \u5c5e\u6027\u5728\u9875\u9762\u662f\u552f\u4e00\u7684\u3002<br \/>\u5bf9\u4e8e\u5217\u8868\u6570\u7ec4\u662f\u4e2a\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff0c\u90a3\u4e48\u76f4\u63a5\u5199 wx:key=&#8221;*this&#8221; \u5c31\u53ef\u4ee5\u4e86\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre>&lt;block wx:for=\"{{[1, 2, 3]}}\" wx:key=\"*this\"&gt;\n  &lt;view&gt;{{index}}:&lt;\/view&gt;\n  &lt;view&gt;{{item}}&lt;\/view&gt;\n&lt;\/block&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<h3>\u5de7\u7528 wx:key \u5c5e\u6027<\/h3>\n<ul>\n<li>\n<p>\u5982\u679c\u5f88\u660e\u786e\u81ea\u5df1\u7684\u5217\u8868\u6e32\u67d3\u662f\u4e2a\u9759\u6001\u5217\u8868\uff0c\u90a3\u4e48\u4f60\u53ef\u4ee5\u50cf\u6211\u4e00\u5f00\u59cb\u90a3\u6837\u505a\uff0c\u52a0\u4e2a wx:key=&#8221;{{index}}&#8221; \u5c31\u53ef\u4ee5\u4e86<\/p>\n<\/li>\n<li>\n<p>\u53cd\u4e4b\uff0c\u5982\u679c\u662f\u4e2a\u52a8\u6001\u5217\u8868\uff0c\u90a3\u4e48\u5c31\u5f97\u5728\u6570\u7ec4\u91cc\u627e\u5230\u552f\u4e00\u7684\u952e\u503c\uff0c\u653e\u5728 wx:key \u91cc\u9762<\/p>\n<\/li>\n<li>\n<p>\u5f53\u7136\u5982\u679c\u4f60\u65e0\u89c6\u8b66\u544a\uff0c\u4e5f\u4e0d\u5f71\u54cd\u529f\u80fd\uff0c\u4e0d\u52a0\u4e5f\u884c<\/p>\n<\/li>\n<\/ul>\n<h2>\u4e8c\u3001 wx:if \u548c hidden \u6709\u4ec0\u4e48\u533a\u522b<\/h2>\n<p>\u5176\u5b9e\u6211\u4eec\u7528\u6761\u4ef6\u6e32\u67d3\u66f4\u591a\u5730\u5728\u7528 wx:if \u800c\u4e0d\u662f hidden\uff0c\u56e0\u4e3a\u524d\u8005\u53ef\u4ee5\u62d3\u5c55\uff0c\u540e\u8005\u7f3a\u4e4f\u4e00\u5b9a\u7684\u903b\u8f91\u3002\u7136\u800c\u4ed6\u4eec\u5230\u5e95\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f<br \/>\u5b98\u65b9\u6587\u6863 \u662f\u8fd9\u6837\u63cf\u8ff0\u7684\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/828\/104\/896\/1550297170842115.png\" class=\"aligncenter\" title=\"\u5217\u8868\u6e32\u67d3wx:key\u7684\u4f5c\u7528\u4ee5\u53ca\u6761\u4ef6\u6e32\u67d3 wx:if \u4e0e hidden\u4e4b\u95f4\u7684\u533a\u522b\u63d2\u56fe1\" alt=\"\u5217\u8868\u6e32\u67d3wx:key\u7684\u4f5c\u7528\u4ee5\u53ca\u6761\u4ef6\u6e32\u67d3 wx:if \u4e0e hidden\u4e4b\u95f4\u7684\u533a\u522b\u63d2\u56fe1\" \/><\/p>\n<p>\u4e0a\u56fe\u4e2d\uff0c\u6211\u4eec\u5927\u6982\u53ef\u4ee5\u4e86\u89e3\u5230\uff0c\u5982\u679c\u9700\u8981\u9891\u7e41\u5207\u6362\u72b6\u6001\uff0c\u7528 hidden\uff0c\u5426\u5219\u7528 wx:if\u3002<br \/>\u4e5f\u5c31\u662f\u8bf4\uff0cwx:if \u80fd\u591f\u5b9e\u65f6\u521b\u5efa\u6e32\u67d3\u7ec4\u4ef6\u6216\u9500\u6bc1\u7ec4\u4ef6\uff0c\u800c\u4e14\u5f53\u4ed6\u4e3a\u771f\u65f6\u624d\u4f1a\u521b\u5efa\uff0c\u521d\u59cb\u4e3a\u5047\u65f6\u4ec0\u4e48\u4e5f\u4e0d\u505a\uff0c\u7531\u771f\u53d8\u4e3a\u5047\u65f6\u5219\u8fdb\u884c\u9500\u6bc1\u3002\u6240\u4ee5\u9891\u7e41\u5207\u6362\u4ed6\u662f\u4e00\u4e2a\u6bd4\u8f83\u8017\u6027\u80fd\u4e3e\u52a8\u3002\u800c hidden \u5219\u4ee3\u8868\u9875\u9762\u521d\u59cb\u6e32\u67d3\u65f6\u5c31\u4f1a\u628a\u8be5\u7ec4\u4ef6\u6e32\u67d3\u5728\u9875\u9762\u4e0a\uff0c\u503c\u7684\u771f\u5047\u53ea\u662f\u63a7\u5236\u5176\u663e\u793a\u9690\u85cf\u7f62\u4e86\u3002\u9875\u9762\u4e0d\u9500\u6bc1\uff0c\u5219\u8be5\u7ec4\u4ef6\u4e5f\u4e0d\u4f1a\u88ab\u9500\u6bc1\u3002<br \/>\u660e\u767d\u4e86\u8fd9\u4e00\u70b9\uff0c\u4f60\u4f1a\u53d1\u73b0\uff0c\u4ece\u6211\u4eec\u5f00\u53d1\u8005\u7684\u89d2\u5ea6\u6765\u8bf4\uff0c\u7075\u6d3b\u4f7f\u7528\u8fd9\u4e24\u4e2a\u6761\u4ef6\u5224\u65ad\u4f1a\u4e8b\u534a\u529f\u500d\u3002<br \/>\u4e0b\u9762\u5217\u4e3e\u51e0\u79cd\u4f7f\u7528\u573a\u666f\u7ed9\u5f00\u53d1\u8005\u53c2\u8003\uff1a<\/p>\n<pre>&lt;view class=\"load-event\" hidden=\"{{!isAdd}}\"&gt;\u52a0\u8f7d\u4e2d\u2026\u2026&lt;\/view&gt;\n&lt;view class=\"load-event\" hidden=\"{{!isAdded &amp;&amp; isMore}}\"&gt;\u6ca1\u6709\u66f4\u591a\u4e86&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0a\u9762\u4ee3\u7801\u662f\u4e00\u4e2a\u4e0a\u62c9\u52a0\u8f7d\u52a8\u753b\u663e\u793a\u4e0e\u9690\u85cf\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u770b\u5230\u7528\u7684\u662f hidden\uff0c\u56e0\u4e3a\u4ed6\u662f\u4e00\u4e2a\u9700\u8981\u9891\u7e41\u5207\u6362\u7684\u7ec4\u4ef6\u3002<\/p>\n<pre>&lt;block wx:if=\"{{node.name === 'p'}}\"&gt;\n  &lt;view class=\"{{node.attrs.class}}\" data-index=\"{{index}}\" bindtap=\"toText\"&gt;\n    &lt;text selectable=\"true\"&gt;{{node.children[0].text}}&lt;\/text&gt;\n  &lt;\/view&gt;\n&lt;\/block&gt;\n&lt;block wx:if=\"{{node.name === 'img'}}\"&gt;\n  &lt;image class=\"{{node.attrs.class}}\" src=\"{{node.attrs.src}}\"&gt;&lt;\/image&gt;\n&lt;\/block&gt;\n&lt;block wx:if=\"{{node.name === 'video'}}\"&gt;\n  &lt;video class=\"{{node.attrs.class}}\" src=\"{{node.attrs.src}}\"&gt;&lt;\/video&gt;\n&lt;\/block&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0a\u9762\u4ee3\u7801\u5c55\u793a\u7684\u662f\u6e32\u67d3\u6587\u5b57\u8fd8\u662f\u56fe\u7247\u6216\u8005\u662f\u89c6\u9891\uff0c\u53ea\u5c55\u793a\u5176\u4e2d\u7684\u4e00\u4e2a\u90a3\u4e48\u7528 wx:if \u6700\u4f73\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u81ea\u5b9a\u4e49 input \u7ec4\u4ef6\uff1a<\/p>\n<pre>&lt;view wx:if=\"{{isInput}}\" class=\"show-input\"&gt;\n  &lt;view class=\"input-item\"&gt;\n    &lt;input class=\"item-input\" bindconfirm=\"onSend\" bindinput=\"inputHandle\" bindblur=\"hideInput\"&gt;&lt;\/input&gt;\n    &lt;view class=\"send-btn\" catchtap=\"onSend\"&gt;\u53d1\u9001&lt;\/view&gt;\n  &lt;\/view&gt;\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u529f\u80fd\u662f\u70b9\u51fb\u8bc4\u8bba\u6309\u94ae\u80fd\u5b9e\u65f6\u663e\u793a\u8f93\u5165\u6846\uff0c\u5426\u5219\u9690\u85cf\u3002\u8fd9\u91cc\u4e3a\u4ec0\u4e48\u7528 wx:if \u5462\uff1f\u56e0\u4e3a\u6211\u5e0c\u671b\u5b83\u663e\u793a\u65f6\u662f\u65b0\u7684 input \u7ec4\u4ef6\uff0c\u4e0d\u662f\u4e4b\u524d\u6e32\u67d3\u597d\u7684\uff0c\u8fd9\u6837\u5982\u679c\u6211\u521a\u8f93\u5165\u5b8c\u6587\u5b57\uff0c\u518d\u6b21\u8bc4\u8bba\u4e0d\u4f1a\u51fa\u73b0\u4e0a\u4e00\u6b21\u7684\u6587\u5b57\u6b8b\u7559\u3002<\/p>\n<h3>\u5de7\u7528 wx:if \u548c hidden<\/h3>\n<ul>\n<li>\n<p>\u6709\u65f6\u6211\u4eec\u9700\u8981\u63d0\u524d\u6e32\u67d3\u597d\u91cc\u9762\u7684\u5b50\u7ec4\u4ef6\uff0c\u90a3\u4e48\u8981\u7528 hidden\uff0c\u5426\u5219\u5f85\u663e\u793a\u65f6\u9700\u8981\u52a0\u4e0a\u6e32\u67d3\u7684\u65f6\u95f4<\/p>\n<\/li>\n<li>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u5728\u9690\u85cf\u7684\u65f6\u5019\u90fd\u4e0d\u9700\u8981\u8be5\u7ec4\u4ef6\u7684\u8bdd\uff0c\u90a3\u5c31\u7528 wx:if<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u9700\u8981\u5728\u9875\u9762\u4e2d\u70b9\u51fb\u5207\u6362\u7684\u6e32\u67d3\uff0c\u90a3\u4e48\u8003\u8651\u5c0f\u7a0b\u5e8f\u6027\u80fd\u95ee\u9898\uff0c\u8fd8\u662f\u7528 hidden \u4e3a\u597d<\/p>\n<\/li>\n<\/ul>\n<h2>\u4e09\u3001\u601d\u8003\uff08\u5f15\u4f38\uff09<\/h2>\n<p>1\u3001  \u8fd9\u4e2a\u5143\u7d20\u5728\u5217\u8868\u548c\u6761\u4ef6\u6e32\u67d3\u4e0a\u662f\u5f88\u597d\u7528\u7684\uff0c\u4e0d\u8fc7\u8981\u6ce8\u610f\u4e0d\u8981\u5728\u8fd9\u4e2a\u6807\u7b7e\u4e0a\u7ed1\u5b9a\u5176\u4ed6\u5c5e\u6027\uff0c\u6bd4\u5982 data- \u6216\u8005\u7ed1\u5b9a\u4e8b\u4ef6 bindtap\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u53cd\u4f8b\uff1a <\/p>\n<pre>&lt;block wx:if=\"{{true}}\" data-id=\"1\" bindtap=\"tapName\"&gt;\n  &lt;view&gt;view1&lt;\/view&gt;\n  &lt;view&gt;view2&lt;\/view&gt;\n&lt;\/block&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u91cc\uff0c\u5728 js \u4e2d\u5b9a\u4e49\u7ed1\u5b9a\u4e8b\u4ef6\u540e\uff0c\u4f60\u4f1a\u53d1\u73b0\u4e0d\u4f1a\u6267\u884c\u3002\u539f\u56e0\u5c31\u5728  \u5143\u7d20\u5728\u6e32\u67d3\u9875\u9762\u540e\u5e76\u4e0d\u4f1a\u5b58\u5728\uff0c\u4ed6\u4e0d\u662f\u4e2a\u7ec4\u4ef6\uff0c\u4e0d\u4f1a\u6e32\u67d3\u5728\u9875\u9762\u6811\u8282\u70b9\u91cc\u9762\uff0c\u6240\u4ee5\u5728\u4ed6\u4e0a\u9762\u7ed1\u5b9a\u7684\u4e8b\u4ef6\u6216\u8005\u5c5e\u6027\u4e5f\u4e0d\u4f1a\u6709\u6548\u3002 <\/p>\n<p>2\u3001 \u5f53 wx:for \u7684\u503c\u4e3a\u5b57\u7b26\u4e32\u65f6\uff0c\u4f1a\u5c06\u5b57\u7b26\u4e32\u89e3\u6790\u6210\u5b57\u7b26\u4e32\u6570\u7ec4\uff1b\u53e6\u5916\uff0c\u82b1\u62ec\u53f7\u548c\u5f15\u53f7\u4e4b\u95f4\u5982\u679c\u6709\u7a7a\u683c\uff0c\u5c06\u6700\u7ec8\u88ab\u89e3\u6790\u6210\u4e3a\u5b57\u7b26\u4e32\uff0c\u8bf7\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>&lt;view wx:for=\"array\"&gt;\n  {{item}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7b49\u540c\u4e8e<\/p>\n<pre>&lt;view wx:for=\"{{['a','r','r','a','y']}}\"&gt;\n  {{item}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    <\/p>\n<pre>&lt;view wx:for=\"{{[1,2,3]}} \"&gt;\n  {{item}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7b49\u540c\u4e8e<\/p>\n<pre>&lt;view wx:for=\"{{[1,2,3] + ' '}}\"&gt;\n  {{item}}\n&lt;\/view&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u672c\u6587\u53c2\u8003\uff1a\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u6559\u7a0b https:\/\/www.html.cn\/study\/20.html<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5217\u8868\u6e32\u67d3wx:key\u7684\u4f5c\u7528\u4ee5\u53ca\u6761\u4ef6\u6e32\u67d3 wx:if \u4e0e hidden\u4e4b\u95f4\u7684\u533a\u522b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5e26\u6765\u7684\u5185\u5bb9\u662f\u5173\u4e8e\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u4f7f\u7528async\/await\u8bed\u6cd5\u7684\u65b9\u6cd5\uff08\u4ee3\u7801\u793a\u4f8b\uff09\uff0c\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u6709\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002 \u5f00\u53d1\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u79bb\u4e0d\u5f00\u201c\u9875\u9762\u6e32\u67d3\u201d\uff0c\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\u5f88\u96be\u7406\u89e3\u5c0f\u7a0b\u5e8f\u91cc\u7684\u201c\u9875\u9762\u6e32\u67d3\u201d\u662f\u4ec0\u4e48\u3001\u600e\u4e48\u7528\uff1f\u800c\u5b66\u8fc7 vue \u7684\u540c\u5b66\u6765\u8bf4\uff0c\u8fd9\u4e2a\u5c31\u6bd4\u8f83\u719f\u6089\u4e86\uff0c\u5b9e\u9645\u4e0a\u5c31\u662f\u6570\u636e\u7ed1\u5b9a\u9875\u9762\u6e32\u67d3\u3002\u90a3\u4e48\u5173\u4e8e\u9875\u9762\u6e32\u67d3\u6700\u91cd\u8981\u7684\u662f\u5217\u8868\u6e32\u67d3\u548c\u6761\u4ef6\u6e32\u67d3\u8fd9\u4e24\u5757\uff0c\u5148\u6765\u770b\u770b\u51e0\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u3002 \u4e0b\u9762\u662f\u4e2a\u201c\u5217\u8868\u6e32\u67d3\u201d\u7684\u4f8b\u5b50\uff1a &lt;view wx:for=&#8221;{{array}}&#8221;&gt; {{index}}: {{item.message}} &lt;\/view&gt; \u767b\u5f55\u540e\u590d\u5236 Page({ data: { array: [{ message: &#8216;foo&#8217;, }, { message: &#8216;bar&#8217; }] } }) \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u9762\u7684\u4f8b\u5b50\u53ef\u4ee5\u770b\u51fa\uff0c\u9ed8\u8ba4\u6570\u7ec4\u7684\u5f53\u524d\u9879\u7684\u4e0b\u6807\u53d8\u91cf\u540d\u9ed8\u8ba4\u4e3a index\uff0c\u6570\u7ec4\u5f53\u524d\u9879\u7684\u53d8\u91cf\u540d\u9ed8\u8ba4\u4e3a item\u3002\u5f53\u7136\uff0c\u4f7f\u7528 wx:for-item \u53ef\u4ee5\u6307\u5b9a\u6570\u7ec4\u5f53\u524d\u5143\u7d20\u7684\u53d8\u91cf\u540d\uff0c\u4f7f\u7528 wx:for-index \u53ef\u4ee5\u6307\u5b9a\u6570\u7ec4\u5f53\u524d\u4e0b\u6807\u7684\u53d8\u91cf\u540d\uff0c\u5982\u4e0b\uff1a &lt;view wx:for=&#8221;{{array}}&#8221; wx:for-index=&#8221;idx&#8221; wx:for-item=&#8221;itemName&#8221;&gt; {{idx}}: {{itemName.message}} &lt;\/view&gt; \u767b\u5f55\u540e\u590d\u5236 \u4e0b\u9762\u662f\u4e2a\u201c\u6761\u4ef6\u6e32\u67d3\u201d\u7684\u4f8b\u5b50\uff1a &lt;view wx:if=&#8221;{{condition}}&#8221;&gt;True&lt;\/view&gt; \u767b\u5f55\u540e\u590d\u5236 Page({ data: { condition: true } }) \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u9762\u7684\u4f8b\u5b50\u8bf4\u660e\uff0c\u5f53 condition [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-32538","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/32538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=32538"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/32538\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=32538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=32538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=32538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}