{"id":29810,"date":"2024-11-25T13:09:34","date_gmt":"2024-11-25T05:09:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/29810\/"},"modified":"2024-11-25T13:09:34","modified_gmt":"2024-11-25T05:09:34","slug":"%e5%b0%8f%e7%a8%8b%e5%ba%8f%e5%bc%80%e5%8f%91%e5%9f%ba%e7%a1%80%e7%af%87%e4%b9%8b%e6%95%b0%e6%8d%ae%e7%bb%91%e5%ae%9a%e4%b8%8b%ef%bc%888%ef%bc%89","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/29810\/","title":{"rendered":"\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09"},"content":{"rendered":"

\u6559\u7a0b\u63a5\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u6559\u7a0b(\u57fa\u7840\u7bc7)7-\u6570\u636e\u7ed1\u5b9a\u4e0a\uff0c\u5f53\u9700\u8981\u5c55\u793a\u4e00\u7ec4\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528wx:for<\/p>\n

\/\/.wxml\r\n<view>\r\n  {{index}}: {{item.message}}\r\n<\/view>\r\n\r\n\/\/.js\r\nage({\r\n  data: {\r\n    array: [{\r\n      message: 'foo',\r\n    }, {\r\n      message: 'bar'\r\n    }]\r\n  }\r\n})<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5176\u4e2dindex\u662f\u5f53\u524d\u6570\u636e\u7d22\u5f15\u7684\u9ed8\u8ba4\u53d8\u91cf\u540d\uff0citem\u662f\u5f53\u524d\u6570\u636e\u9879\u7684\u9ed8\u8ba4\u53d8\u91cf\u540d\u3002
\u4e5f\u53ef\u4ee5\u4f7f\u7528 wx:for-item \u548c wx:for-index \u6765\u6307\u5b9a\u522b\u540d<\/p>\n
<view>\r\n  {{idx}}: {{itemName.message}}\r\n<\/view><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e5f\u53ef\u4ee5\u5d4c\u5957\u4f7f\u7528\uff0c\u5982\u4e0b\u9762\u662f\u4e00\u4e2a\u4e5d\u4e5d\u4e58\u6cd5\u8868<\/p>\n
<view>\r\n  <view>\r\n    <view>\r\n      {{i}} * {{j}} = {{i * j}}\r\n    <\/view>\r\n  <\/view><\/view><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u7c7b\u4f3cblock wx:if\uff0c\u4e5f\u53ef\u4ee5\u5c06wx:for\u7528\u5728 \u6807\u7b7e\u4e0a\uff0c\u4ee5\u6e32\u67d3\u4e00\u4e2a\u5305\u542b\u591a\u8282\u70b9\u7684\u7ed3\u6784\u5757<\/p>\n
<block>\r\n  <view> {{index}}: <\/view>\r\n  <view> {{item}} <\/view><\/block><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
wx:key<\/h2>\n
\u8981\u7406\u89e3\u4e3a\u4ec0\u4e48\u9700\u8981wx:key\uff0c\u5148\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50:<\/p>\n
\/\/.wxml\r\n<checkbox> {{item.name}} <\/checkbox><button>\u5728\u4e0a\u65b9\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684check\u7ec4\u4ef6<\/button>\r\n\r\n\/\/.js\r\nPage({\r\n  data: {\r\n    objectArray: [\r\n      {id: 1, name: '\u6211\u6ca1\u6709\u88ab\u9009\u4e2d'},\r\n      {id: 2, name: '\u6211\u6ca1\u6709\u88ab\u9009\u4e2d'},\r\n    ],\r\n  },\r\n\r\n  addToFront: function(e) {\r\n    const length = this.data.objectArray.length\r\n    this.data.objectArray = [{id: length, name: '\u6211\u6ca1\u6709\u88ab\u9009\u4e2d'}].concat(this.data.objectArray)\r\n    this.setData({\r\n      objectArray: this.data.objectArray\r\n    })\r\n  },\r\n})<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u9762\u7684\u4ee3\u7801\u521b\u5efa\u4e86\u4e24\u4e2acheckbox<\/strong>\u7ec4\u4ef6\u548c\u4e00\u4e2a\u6309\u94ae\uff0c\u5f53\u70b9\u51fb\u6309\u94ae\u4f1a\u5728\u6700\u4e0a\u65b9\u65b0\u589e\u4e00\u4e2acheckbox\u7ec4\u4ef6\u3002
\u7f16\u8bd1\u4ee3\u7801\uff0c\u4f1a\u663e\u793a\u5982\u4e0b\u754c\u9762:<\/p>\n
\"\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09\u63d2\u56fe\"<\/p>\n
\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0<\/p>\n
\u70b9\u51fb\u6309\u94ae\uff0c\u754c\u9762\u5982\u4e0b\uff1a<\/p>\n
\"\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09\u63d2\u56fe1\"<\/p>\n
\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0<\/p>\n
ok\uff0c\u5230\u8fd9\u91cc\u4e00\u5207\u6b63\u5e38 \uff0c\u4e3a\u4e86\u66f4\u597d\u7684\u8bf4\u660e\u95ee\u9898\uff0c\u52a0\u5165checkbox\u9009\u4e2d\u4e8b\u4ef6\u7684\u5904\u7406\uff0c\u5f53checkbox\u88ab\u9009\u4e2d\u65f6\uff0c\u5c06\u6587\u5b57\u4fee\u6539\u4e3a”\u6211\u88ab\u9009\u4e2d\u4e86”\uff0c\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\/\/wxml\r\n<checkbox-group>\r\n  <checkbox> {{item.name}} \r\n  <\/checkbox><\/checkbox-group><button>\u5728\u4e0a\u65b9\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684check\u7ec4\u4ef6<\/button>\r\n\r\n\/\/js\r\nPage({\r\n  data: {\r\n    objectArray: [\r\n      {id: 1, name: '\u6211\u6ca1\u6709\u88ab\u9009\u4e2d'},\r\n      {id: 2, name: '\u6211\u6ca1\u6709\u88ab\u9009\u4e2d'},\r\n    ],\r\n  },\r\n\r\n  addToFront: function(e) {\r\n    const length = this.data.objectArray.length\r\n    this.data.objectArray = [{id: length + 1, name: '\u6211\u6ca1\u6709\u88ab\u9009\u4e2d'}].concat(this.data.objectArray)\r\n    this.setData({\r\n      objectArray: this.data.objectArray\r\n    })\r\n  },\r\n  checkboxChange: function(e){\r\n    console.log('checkboxChange')\r\n    const length = this.data.objectArray.length\r\n    let checkBoxArray = this.data.objectArray\r\n    for (let i = 0; i <p>\u5f53\u9009\u4e2d\u7b2c\u4e00\u4e2acheckbox\u65f6\uff0c\u754c\u9762\u5982\u4e0b<br><\/p><p class=\"image-package\"><img  src=\"https:\/\/img.php.cn\/upload\/article\/000\/001\/505\/9ddb4ff40c0fd5cdbb4c13d8cefa90fe-2.png\"    style=\"max-width:90%\"  style=\"max-width:90%\" alt=\"\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09\" ><br><\/p><p class=\"image-caption\">\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0<\/p><p>\u8fd9\u65f6\u5982\u679c\u70b9\u51fb\u6dfb\u52a0\u7ec4\u4ef6\u6309\u94ae\u4f1a\u600e\u6837\u5462\uff0c\u671f\u671b\u7684\u6548\u679c\u5e94\u8be5\u5982\u4e0b<\/p><p class=\"image-package\"><img  src=\"https:\/\/img.php.cn\/upload\/article\/000\/001\/505\/9ddb4ff40c0fd5cdbb4c13d8cefa90fe-3.png\"    style=\"max-width:90%\"  style=\"max-width:90%\" alt=\"\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09\" ><br><\/p><p class=\"image-caption\">\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0<\/p><p>\u7136\u800c\u5b9e\u9645\u6548\u679c\u786e\u662f\u4e0b\u56fe\u8fd9\u6837\u7684<\/p><p class=\"image-package\"><img  src=\"https:\/\/img.php.cn\/upload\/article\/000\/001\/505\/95646f5884735db984362858db90a2ca-4.png\"    style=\"max-width:90%\"  style=\"max-width:90%\" alt=\"\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09\" ><br><\/p><p class=\"image-caption\">\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0<\/p><p>\u53ef\u4ee5\u770b\u5230\u6e32\u67d3\u5f15\u64ce\u5e76\u6ca1\u6709\u5c06\u9009\u4e2d\u7684\u6548\u679c\u548c\u6570\u636e\u7ed1\u5b9a\u8d77\u6765\uff0c\u5bfc\u81f4\u51fa\u73b0\u4e86\u9884\u671f\u4e4b\u5916\u7684\u7ed3\u679c\u3002\u5982\u679c\u60f3\u8981\u8fbe\u5230\u9884\u671f\u6548\u679c\uff0c\u5c31\u8981\u4f7f\u7528wx:key<\/p><pre class=\"brush:xml;toolbar:false;\"><checkbox-group>\r\n  <checkbox> {{item.name}} \r\n  <\/checkbox><\/checkbox-group><button>\u5728\u4e0a\u65b9\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684check\u7ec4\u4ef6<\/button><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5c06.wxml\u6587\u4ef6\u4fee\u6539\u4e3a\u4e0a\u8ff0\u4ee3\u7801\u6240\u793a\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u9884\u671f\u6548\u679c\uff0c\u91cd\u70b9\u5c31\u5728 wx:key = “id” \u8fd9\u4e00\u53e5<\/p>\n
\n  \u5982\u679c\u5217\u8868\u4e2d\u9879\u76ee\u7684\u4f4d\u7f6e\u4f1a\u52a8\u6001\u6539\u53d8\u6216\u8005\u6709\u65b0\u7684\u9879\u76ee\u6dfb\u52a0\u5230\u5217\u8868\u4e2d\uff0c\u5e76\u4e14\u5e0c\u671b\u5217\u8868\u4e2d\u7684\u9879\u76ee\u4fdd\u6301\u81ea\u5df1\u7684\u7279\u5f81\u548c\u72b6\u6001\uff08\u5982 \u4e2d\u7684\u8f93\u5165\u5185\u5bb9\uff0c \u7684\u9009\u4e2d\u72b6\u6001\uff09\uff0c\u9700\u8981\u4f7f\u7528 wx:key \u6765\u6307\u5b9a\u5217\u8868\u4e2d\u9879\u76ee\u7684\u552f\u4e00\u7684\u6807\u8bc6\u7b26\u3002wx:key \u7684\u503c\u4ee5\u4e24\u79cd\u5f62\u5f0f\u63d0\u4f9b1 \u5b57\u7b26\u4e32\uff0c\u4ee3\u8868\u5728 for \u5faa\u73af\u7684 array \u4e2d item \u7684\u67d0\u4e2a property\uff0c\u8be5 property\u7684\u503c\u9700\u8981\u662f\u5217\u8868\u4e2d\u552f\u4e00\u7684\u5b57\u7b26\u4e32\u6216\u6570\u5b57\uff0c\u4e14\u4e0d\u80fd\u52a8\u6001\u6539\u53d8\u30022 \u4fdd\u7559\u5173\u952e\u5b57 *this \u4ee3\u8868\u5728 for \u5faa\u73af\u4e2d\u7684 item \u672c\u8eab\uff0c\u8fd9\u79cd\u8868\u793a\u9700\u8981item \u672c\u8eab\u662f\u4e00\u4e2a\u552f\u4e00\u7684\u5b57\u7b26\u4e32\u6216\u8005\u6570\u5b57\uff0c\n<\/p><\/blockquote>\n
\u4e0a\u9762\u5f15\u7528\u81ea\u5fae\u4fe1\u5b98\u65b9\u6559\u7a0b\u3002\u9664\u4e86\u7528\u4e8e\u4fdd\u6301\u89c6\u56fe\u7ec4\u4ef6\u7684\u72b6\u6001\u5916\uff0c\u4f7f\u7528wx:key\u8fd8\u6709\u52a9\u4e8e\u63d0\u9ad8\u6e32\u67d3\u6548\u7387<\/p>\n
\n
\u5f53\u6570\u636e\u6539\u53d8\u89e6\u53d1\u6e32\u67d3\u5c42\u91cd\u65b0\u6e32\u67d3\u7684\u65f6\u5019\uff0c\u4f1a\u6821\u6b63\u5e26\u6709 key\u7684\u7ec4\u4ef6\uff0c\u6846\u67b6\u4f1a\u786e\u4fdd\u4ed6\u4eec\u88ab\u91cd\u65b0\u6392\u5e8f\uff0c\u800c\u4e0d\u662f\u91cd\u65b0\u521b\u5efa\uff0c\u4ee5\u786e\u4fdd\u4f7f\u7ec4\u4ef6\u4fdd\u6301\u81ea\u8eab\u7684\u72b6\u6001\uff0c\u5e76\u4e14\u63d0\u9ad8\u5217\u8868\u6e32\u67d3\u65f6\u7684\u6548\u7387\u3002<\/p>\n<\/blockquote>\n
\u4ee5\u4e0a\u5c31\u662f\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u57fa\u7840\u7bc7\u4e4b\u6570\u636e\u7ed1\u5b9a\u4e0b\uff088\uff09\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":"
\u6559\u7a0b\u63a5\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u6559\u7a0b(\u57fa\u7840\u7bc7)7-\u6570\u636e\u7ed1\u5b9a\u4e0a\uff0c\u5f53\u9700\u8981\u5c55\u793a\u4e00\u7ec4\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528wx:for \/\/.wxml <view>   {{index}}: {{item.message}} <\/view> \/\/.js age({   data: {     array: [{       message: ‘foo’,     }, {       message: ‘bar’     }]   } }) \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2dindex\u662f\u5f53\u524d\u6570\u636e\u7d22\u5f15\u7684\u9ed8\u8ba4\u53d8\u91cf\u540d\uff0citem\u662f\u5f53\u524d\u6570\u636e\u9879\u7684\u9ed8\u8ba4\u53d8\u91cf\u540d\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528 wx:for-item \u548c wx:for-index \u6765\u6307\u5b9a\u522b\u540d <view>   {{idx}}: {{itemName.message}} <\/view> \u767b\u5f55\u540e\u590d\u5236 \u4e5f\u53ef\u4ee5\u5d4c\u5957\u4f7f\u7528\uff0c\u5982\u4e0b\u9762\u662f\u4e00\u4e2a\u4e5d\u4e5d\u4e58\u6cd5\u8868 <view>   <view>     <view>       {{i}} * {{j}} = {{i * j}}     <\/view>   <\/view><\/view> \u767b\u5f55\u540e\u590d\u5236 \u7c7b\u4f3cblock wx:if\uff0c\u4e5f\u53ef\u4ee5\u5c06wx:for\u7528\u5728 \u6807\u7b7e\u4e0a\uff0c\u4ee5\u6e32\u67d3\u4e00\u4e2a\u5305\u542b\u591a\u8282\u70b9\u7684\u7ed3\u6784\u5757 <block>   <view> {{index}}: <\/view>   <view> {{item}} <\/view><\/block> \u767b\u5f55\u540e\u590d\u5236 wx:key \u8981\u7406\u89e3\u4e3a\u4ec0\u4e48\u9700\u8981wx:key\uff0c\u5148\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50: \/\/.wxml <checkbox> {{item.name}} <\/checkbox><button>\u5728\u4e0a\u65b9\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684check\u7ec4\u4ef6<\/button> \/\/.js Page({   data: {     objectArray: [       {id: 1, name: ‘\u6211\u6ca1\u6709\u88ab\u9009\u4e2d’},       {id: 2, name: ‘\u6211\u6ca1\u6709\u88ab\u9009\u4e2d’},     ],   },   addToFront: function(e) {     const length = this.data.objectArray.length     this.data.objectArray = [{id: length, name: ‘\u6211\u6ca1\u6709\u88ab\u9009\u4e2d’}].concat(this.data.objectArray) […]<\/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-29810","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/29810","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=29810"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/29810\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=29810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=29810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=29810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}