{"id":31915,"date":"2024-11-25T12:03:50","date_gmt":"2024-11-25T04:03:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/31915\/"},"modified":"2024-11-25T12:03:50","modified_gmt":"2024-11-25T04:03:50","slug":"%e5%be%ae%e4%bf%a1%e5%b0%8f%e7%a8%8b%e5%ba%8f%e4%b8%ad%e9%a1%b5%e9%9d%a2%e9%97%b4%e9%80%9a%e4%bf%a1%e7%9a%84%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/31915\/","title":{"rendered":"\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u9875\u9762\u95f4\u901a\u4fe1\u7684\u65b9\u5f0f"},"content":{"rendered":"

\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4ecb\u7ecd\u4e86\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u9875\u9762\u95f4\u901a\u4fe1\u76845\u79cd\u65b9\u5f0f\uff0c\u5185\u5bb9\u633a\u4e0d\u9519\u7684\uff0c\u73b0\u5728\u5206\u4eab\u7ed9\u5927\u5bb6\uff0c\u4e5f\u7ed9\u5927\u5bb6\u505a\u4e2a\u53c2\u8003\u3002<\/p>\n

PageModel\uff08\u9875\u9762\u6a21\u578b\uff09\u5bf9\u5c0f\u7a0b\u5e8f\u800c\u8a00\u662f\u5f88\u91cd\u8981\u7684\u4e00\u4e2a\u6982\u5ff5\uff0c\u4eceapp.json\u4e2d\u4e5f\u53ef\u4ee5\u770b\u5230\uff0c\u5c0f\u7a0b\u5e8f\u5c31\u662f\u7531\u4e00\u4e2a\u4e2a\u9875\u9762\u7ec4\u6210\u7684\u3002<\/p>\n

\"\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u9875\u9762\u95f4\u901a\u4fe1\u7684\u65b9\u5f0f\u63d2\u56fe\"<\/p>\n

\u5982\u4e0a\u56fe\uff0c\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7ed3\u6784\u7684\u5c0f\u7a0b\u5e8f\uff1a\u9996\u9875\u662f\u4e00\u4e2a\u53ccTab\u6846\u67b6PageA\u548cPageB\uff0c\u5b50\u9875\u9762pageB, PageC\u3002<\/p>\n

\u8ba9\u6211\u4eec\u5047\u8bbe\u8fd9\u6837\u4e00\u4e2a\u573a\u666f\uff1a\u9996\u9875PageA\u6709\u4e00\u4e2a\u98d8\u6570\uff0c\u5f53\u6211\u4eec\u4ecePageA\u65b0\u5f00PageC\u540e\uff0c\u505a\u4e00\u4e9b\u64cd\u4f5c\uff0c\u518d\u56de\u9000\u5230PageA\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u98d8\u6570\u8981\u5237\u65b0\u3002\u5f88\u663e\u7136\uff0c\u8fd9\u9700\u8981\u5728PageC\u4e2d\u505a\u64cd\u4f5c\u65f6\uff0c\u80fd\u901a\u77e5\u5230PageA,\u4ee5\u4fbfPageA\u505a\u76f8\u5e94\u7684\u8054\u52a8\u53d8\u5316\u3002<\/p>\n

\u8fd9\u91cc\u7684\u901a\u77e5\uff0c\u4e13\u4e1a\u70b9\u8bf4\u5c31\u662f\u9875\u9762\u901a\u4fe1\u3002\u6240\u8c13\u901a\u4fe1\uff0cu3\u8ba4\u4e3a\u8981\u6ee1\u8db3\u4e0b\u9762\u4e24\u4e2a\u6761\u4ef6\uff1a<\/p>\n

    \n
  1. \n

    \u6fc0\u6d3b\u5bf9\u65b9\u7684\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528<\/p>\n<\/li>\n

  2. \n

    \u80fd\u591f\u5411\u88ab\u6fc0\u6d3b\u7684\u65b9\u6cd5\u4f20\u9012\u6570\u636e<\/p>\n<\/li>\n<\/ol>\n

    \u672c\u6587\u5c06\u6839\u636e\u9879\u76ee\u5b9e\u8df5\uff0c\u7ed3\u5408\u5c0f\u7a0b\u5e8f\u81ea\u8eab\u7279\u70b9\uff0c\u5c31\u5c0f\u7a0b\u5e8f\u9875\u9762\u95f4\u901a\u4fe1\u65b9\u5f0f\u4f5c\u4e00\u4e2a\u63a2\u8ba8\u4e0e\u5c0f\u7ed3\u3002<\/p>\n

    \u901a\u4fe1\u5206\u7c7b<\/strong><\/p>\n

    \u6309\u9875\u9762\u5c42\u7ea7\uff08\u6216\u5c55\u793a\u8def\u5f84\uff09\u53ef\u4ee5\u5206\u4e3a\uff1a<\/p>\n

      \n
    1. \n

      \u5144\u5f1f\u9875\u9762\u95f4\u901a\u4fe1\u3002\u5982\u591aTab\u9875\u9762\u95f4\u901a\u4fe1\uff0cPageA\uff0cPageB\u4e4b\u95f4\u901a\u4fe1<\/p>\n<\/li>\n

    2. \n

      \u7236\u8def\u5f84\u9875\u9762\u5411\u5b50\u8def\u5f84\u9875\u9762\u901a\u4fe1\uff0c\u5982PageA\u5411PageC\u901a\u4fe1<\/p>\n<\/li>\n

    3. \n

      \u5b50\u8def\u5f84\u9875\u9762\u5411\u7236\u8def\u5f84\u9875\u9762\u901a\u4fe1\uff0c\u5982PageC\u5411PageA\u901a\u4fe1<\/p>\n<\/li>\n<\/ol>\n

      \u6309\u901a\u4fe1\u65f6\u6fc0\u6d3b\u5bf9\u65b9\u65b9\u6cd5\u65f6\u673a\uff0c\u53c8\u53ef\u4ee5\u5206\u4e3a\uff1a<\/p>\n

        \n
      1. \n

        \u5ef6\u8fdf\u6fc0\u6d3b\uff0c\u5373\u6211\u5728PageC\u505a\u5b8c\u64cd\u4f5c\uff0c\u7b49\u8fd4\u56de\u5230PageA\u518d\u6fc0\u6d3bPageA\u7684\u65b9\u6cd5\u8c03\u7528<\/p>\n<\/li>\n

      2. \n

        \u7acb\u5373\u6fc0\u6d3b\uff0c\u5373\u6211\u5728PageC\u505a\u5b8c\u64cd\u4f5c\uff0c\u5728PageC\u6fc0\u6d3bPageA\u7684\u65b9\u6cd5\u8c03\u7528<\/p>\n<\/li>\n<\/ol>\n

        \u65b9\u5f0f\u4e00\uff1aonShow\/onHide + localStorage<\/strong><\/span><\/p>\n

        \u5229\u7528onShow\/onHide\u6fc0\u6d3b\u65b9\u6cd5\uff0c\u901a\u8fc7localStorage\u4f20\u9012\u6570\u636e\u3002\u5927\u6982\u903b\u8f91\u5982\u4e0b<\/p>\n

        \/\/ pageA\nlet isInitSelfShow = true;\n\nPage({\n data: {\n  helloMsg: 'hello from PageA'\n },\n\n onShow() {\n  \/\/ \u9875\u9762\u521d\u59cb\u5316\u4e5f\u4f1a\u89e6\u53d1onShow\uff0c\u8fd9\u79cd\u60c5\u51b5\u53ef\u80fd\u4e0d\u9700\u8981\u68c0\u67e5\u901a\u4fe1\n  if (isInitSelfShow) return;\n\n  let newHello = wx.getStorageSync('__data');\n\n  if (newHello) {\n   this.setData({\n    helloMsg: newHello\n   });\n\n   \/\/ \u6e05\u961f\u4e0a\u6b21\u901a\u4fe1\u6570\u636e\n   wx.clearStorageSync('__data');\n  }\n\n },\n\n onHide() {\n  isInitSelfShow = false;\n },\n\n goC() {\n  wx.navigateTo({\n   url: '\/pages\/c\/c'\n  });\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/ pageC\nPage({\n doSomething() {\n  wx.setStorageSync('__data', 'hello from PageC');\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4f18\u70b9\uff1a<\/strong>\u5b9e\u73b0\u7b80\u5355\uff0c\u5bb9\u6613\u7406\u89e3<\/p>\n
        \u7f3a\u70b9\uff1a<\/strong>\u5982\u679c\u5b8c\u6210\u901a\u4fe1\u540e\uff0c\u6ca1\u6709\u5373\u65f6\u6e05\u9664\u901a\u4fe1\u6570\u636e\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u95ee\u9898\u3002\u53e6\u5916\u56e0\u4e3a\u4f9d\u8d56localStorage\uff0c\u800clocalStorage\u53ef\u80fd\u51fa\u73b0\u8bfb\u5199\u5931\u8d25\uff0c\u4ece\u9762\u9020\u6210\u901a\u4fe1\u5931\u8d25<\/p>\n
        \u6ce8\u610f\u70b9\uff1a<\/strong>\u9875\u9762\u521d\u59cb\u5316\u65f6\u4e5f\u4f1a\u89e6\u53d1onShow<\/p>\n
        \u65b9\u5f0f\u4e8c\uff1aonShow\/onHide + \u5c0f\u7a0b\u5e8fglobalData<\/strong><\/span><\/p>\n
        \u540c\u65b9\u5f0f\u4e00\u4e00\u6837\uff0c\u5229\u7528onShow\/onHide\u6fc0\u6d3b\u65b9\u6cd5\uff0c\u901a\u8fc7\u8bfb\u5199\u5c0f\u7a0b\u5e8fglobalData\u5b8c\u6210\u6570\u636e\u4f20\u9012<\/p>\n
        \/\/ PageA\nlet isInitSelfShow = true;\nlet app = getApp();\n\nPage({\n data: {\n  helloMsg: 'hello from PageA'\n },\n\n onShow() {\n  if (isInitSelfShow) return;\n\n  let newHello = app.$$data.helloMsg;\n\n  if (newHello) {\n   this.setData({\n    helloMsg: newHello\n   });\n\n   \/\/ \u6e05\u961f\u4e0a\u6b21\u901a\u4fe1\u6570\u636e\n   app.$$data.helloMsg = null;\n  }\n\n },\n\n onHide() {\n  isInitSelfShow = false;\n },\n\n goC() {\n  wx.navigateTo({\n   url: '\/pages\/c\/c'\n  });\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/ PageC\nlet app = getApp();\n\nPage({\n doSomething() {\n  app.$$data.helloMsg = 'hello from pageC';\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4f18\u70b9\uff1a<\/strong>\u5b9e\u73b0\u7b80\u5355\uff0c\u5b9e\u73b0\u7406\u89e3\u3002\u56e0\u4e3a\u4e0d\u8bfb\u5199localStorage\uff0c\u76f4\u63a5\u64cd\u4f5c\u5185\u5b58\uff0c\u6240\u4ee5\u76f8\u6bd4\u65b9\u5f0f1\uff0c\u901f\u5ea6\u66f4\u5feb\uff0c\u66f4\u53ef\u9760<\/p>\n
        \u7f3a\u70b9\uff1a<\/strong>\u540c\u65b9\u5f0f1\u4e00\u6837\uff0c\u8981\u6ce8\u610fglobalData\u6c61\u67d3<\/p>\n
        \u65b9\u5f0f\u4e09\uff1aeventBus(\u6216\u8005\u53ebPubSub)\u65b9\u5f0f<\/strong><\/span><\/p>\n
        \u8fd9\u79cd\u65b9\u5f0f\u8981\u5148\u5b9e\u73b0\u4e00\u4e2aPubSub\uff0c\u901a\u8fc7\u8ba2\u9605\u53d1\u5e03\u5b9e\u73b0\u901a\u4fe1\u3002\u5728\u53d1\u5e03\u4e8b\u4ef6\u65f6\uff0c\u6fc0\u6d3b\u5bf9\u65b9\u65b9\u6cd5\uff0c\u540c\u65f6\u4f20\u5165\u53c2\u6570\uff0c\u6267\u884c\u4e8b\u4ef6\u7684\u8ba2\u9605\u65b9\u6cd5<\/p>\n
        \"\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u9875\u9762\u95f4\u901a\u4fe1\u7684\u65b9\u5f0f\u63d2\u56fe1\"<\/p>\n
        \/* \/plugins\/pubsub.js\n * \u4e00\u4e2a\u7b80\u5355\u7684PubSub\n *\/\nexport default class PubSub {\n constructor() {\n  this.PubSubCache = {\n   $uid: 0\n  };\n }\n\n on(type, handler) {\n  let cache = this.PubSubCache[type] || (this.PubSubCache[type] = {});\n\n  handler.$uid = handler.$uid || this.PubSubCache.$uid++;\n  cache[handler.$uid] = handler;\n }\n\n emit(type, ...param) {\n  let cache = this.PubSubCache[type], \n    key, \n    tmp;\n\n  if(!cache) return;\n\n  for(key in cache) {\n   tmp = cache[key];\n   cache[key].call(this, ...param);\n  }\n }\n\n off(type, handler) {\n  let counter = 0,\n    $type,\n    cache = this.PubSubCache[type];\n\n  if(handler == null) {\n   if(!cache) return true;\n   return !!this.PubSubCache[type] &amp;&amp; (delete this.PubSubCache[type]);\n  } else {\n   !!this.PubSubCache[type] &amp;&amp; (delete this.PubSubCache[type][handler.$uid]);\n  }\n\n  for($type in cache) {\n   counter++;\n  }\n\n  return !counter &amp;&amp; (delete this.PubSubCache[type]);\n }\n}<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/pageA\nlet app = getApp();\n\nPage({\n data: {\n  helloMsg: 'hello from PageA'\n },\n\n onLoad() {\n  app.pubSub.on('hello', (number) =&gt; {\n   this.setData({\n    helloMsg: 'hello times:' + number\n   });\n  });\n },\n\n goC() {\n  wx.navigateTo({\n   url: '\/pages\/c\/c'\n  });\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/pageC\nlet app = getApp();\nlet counter = 0;\n\nPage({\n doSomething() {\n  app.pubSub.emit('hello', ++counter);\n },\n\n off() {\n  app.pubSub.off('hello');\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u7f3a\u70b9\uff1a<\/strong>\u8981\u975e\u5e38\u6ce8\u610f\u91cd\u590d\u7ed1\u5b9a\u7684\u95ee\u9898<\/p>\n
        \u65b9\u5f0f\u56db\uff1agloabelData watcher\u65b9\u5f0f<\/strong><\/span><\/p>\n
        \u524d\u9762\u63d0\u5230\u65b9\u5f0f\u4e2d\uff0c\u6211\u4eec\u6709\u5229\u7528globalData\u5b8c\u6210\u901a\u4fe1\u3002\u73b0\u5728\u6570\u636e\u7ed1\u5b9a\u6d41\u884c\uff0c\u7ed3\u5408redux\u5355\u4e00store\u7684\u601d\u60f3\uff0c\u5982\u679c\u6211\u4eec\u76f4\u63a5watch\u4e00\u4e2aglobalData,\u90a3\u4e48\u8981\u901a\u4fe1\uff0c\u53ea\u9700\u4fee\u6539\u8fd9\u4e2adata\u503c\uff0c\u901a\u8fc7water\u53bb\u6fc0\u6d3b\u8c03\u7528\u3002\u540c\u65f6\u4fee\u6539\u7684data\u503c\uff0c\u672c\u8eab\u5c31\u53ef\u4ee5\u505a\u4e3a\u53c2\u6570\u6570\u636e\u3002<\/p>\n
        \u4e3a\u4e86\u65b9\u4fbf\u6f14\u793a\uff0c\u8fd9\u91cc\u4f7f\u7528oba\u8fd9\u4e2a\u5f00\u6e90\u5e93\u505a\u4e3a\u5bf9\u8c61\u76d1\u63a7\u5e93\uff0c\u6709\u5174\u8da3\u7684\u8bdd\uff0c\u53ef\u4ee5\u81ea\u5df1\u5b9e\u73b0\u4e00\u4e2a\u3002<\/p>\n
        \/\/pageA\nimport oba from '..\/..\/plugin\/oba';\n\nlet app = getApp();\n\nPage({\n data: {\n  helloMsg: 'hello from PageA'\n },\n\n onLoad() {\n  oba(app.$$data, (prop, newvalue, oldValue) =&gt; {\n   this.setData({\n    helloMsg: 'hello times: ' + [prop, newvalue, oldValue].join('#')\n   });\n  });\n },\n\n goC() {\n  wx.navigateTo({\n   url: '\/pages\/c\/c'\n  });\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/pageC\nlet app = getApp();\nlet counter = 0;\n\nPage({\n doSomething() {\n  app.$$data.helloTimes = ++counter;\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4f18\u70b9\uff1a<\/strong>\u6570\u636e\u9a71\u52a8\uff0c\u5355\u4e00\u6570\u636e\u6e90\uff0c\u4fbf\u4e8e\u8c03\u8bd5<\/p>\n
        \u7f3a\u70b9\uff1a<\/strong>\u91cd\u590dwatch\u7684\u95ee\u9898\u8fd8\u662f\u5b58\u5728\uff0c\u8981\u60f3\u529e\u6cd5\u907f\u514d<\/p>\n
        \u65b9\u5f0f\u4e94\uff1a\u901a\u8fc7hack\u65b9\u6cd5\u76f4\u63a5\u8c03\u7528\u901a\u4fe1\u9875\u9762\u7684\u65b9\u6cd5<\/strong><\/span><\/p>\n
        \u76f4\u63a5\u7f13\u5b58\u9875\u9762PageModel, \u901a\u4fe1\u65f6\uff0c\u76f4\u63a5\u627e\u5230\u8981\u901a\u4fe1\u9875\u9762\u7684PageModel,\u8fdb\u800c\u53ef\u4ee5\u8bbf\u95ee\u901a\u4fe1\u9875\u9762PageModel\u6240\u6709\u7684\u5c5e\u6027\uff0c\u65b9\u6cd5\u3002\u7b80\u76f4\u4e0d\u80fd\u592acool,\u611f\u8c22\u5c0f\u7ec4\u5185\u5c0f\u4f19\u4f34\u53d1\u73b0\u8fd9\u4e48amazing\u7684\u65b9\u5f0f\u3002\u6709\u4eba\u80af\u5b9a\u4f1a\u95ee\u4e86\uff0c\u600e\u4e48\u62ff\u5230\u8fd9\u4e2a\u6240\u6709\u7684PageModel\u5462\u3002\u5176\u5b83\u5f88\u7b80\u5355\uff0c\u6bcf\u4e2a\u9875\u9762\u6709onLoad\u65b9\u6cd5\uff0c\u6211\u4eec\u5728\u8fd9\u4e2a\u4e8b\u4ef6\u4e2d\uff0c\u628athis\uff08\u5373\u4e9b\u9875\u9762PageModel\uff09\u7f13\u5b58\u5373\u53ef\uff0c\u7f13\u5b58\u65f6\u7528\u9875\u9762\u8def\u5f84\u4f5ckey\uff0c\u65b9\u4fbf\u67e5\u627e\u3002\u90a3\u4e48\u9875\u9762\u8def\u5f84\u600e\u4e48\u83b7\u53d6\u5462\uff0c\u7b54\u6848\u5c31\u662fpage__route__\u8fd9\u4e2a\u5c5e\u6027<\/p>\n
        \/\/ plugin\/pages.js \n\/\/ \u7f13\u5b58pageModel,\u4e00\u4e2a\u7b80\u8981\u5b9e\u73b0\nexport default class PM {\n constructor() {\n  this.$$cache = {};\n }\n\n add(pageModel) {\n  let pagePath = this._getPageModelPath(pageModel);\n\n  this.$$cache[pagePath] = pageModel;\n }\n\n get(pagePath) {\n  return this.$$cache[pagePath];\n }\n \n delete(pageModel) {\n  try {\n   delete this.$$cache[this._getPageModelPath(pageModel)];\n  } catch (e) {\n  }\n }\n\n _getPageModelPath(page) {\n  \/\/ \u5173\u952e\u70b9\n  return page.__route__;\n }\n}<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/ pageA\nlet app = getApp();\n\nPage({\n data: {\n  helloMsg: 'hello from PageA'\n },\n\n onLoad() {\n  app.pages.add(this);\n },\n\n goC() {\n  wx.navigateTo({\n   url: '\/pages\/c\/c'\n  });\n },\n \n sayHello(msg) {\n  this.setData({\n   helloMsg: msg\n  });\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \/\/pageC\n\nlet app = getApp();\n\nPage({\n doSomething() {\n  \/\/ \u89c1\u8bc1\u5947\u8ff9\u7684\u65f6\u523b\n  app.pages.get('pages\/a\/a').sayHello('hello u3xyz.com');\n }\n});<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4f18\u70b9\uff1a<\/strong>\u4e00\u9488\u89c1\u8840\uff0c\u529f\u80fd\u5f3a\u5927\uff0c\u53ef\u4ee5\u5411\u8981\u901a\u4fe1\u9875\u9762\u505a\u4f60\u60f3\u505a\u7684\u4efb\u4f55\u4e8b\u3002\u65e0\u9700\u8981\u7ed1\u5b9a\uff0c\u8ba2\u9605\uff0c\u6240\u4ee5\u4e5f\u5c31\u4e0d\u5b58\u5728\u91cd\u590d\u7684\u60c5\u51b5<\/p>\n
        \u7f3a\u70b9\uff1a<\/strong>\u4f7f\u7528\u4e86__route__\u8fd9\u4e2ahack\u5c5e\u6027\uff0c\u53ef\u80fd\u4f1a\u6709\u4e00\u4e9b\u98ce\u9669<\/p>\n
        \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff0c\u66f4\u591a\u76f8\u5173\u5185\u5bb9\u8bf7\u5173\u6ce8PHP\u4e2d\u6587\u7f51\uff01<\/p>\n
        \u76f8\u5173\u63a8\u8350\uff1a<\/p>\n
        <\/p>\n
        <\/p>\n<\/p>\n
        <\/span><\/p>\n
        \u4ee5\u4e0a\u5c31\u662f\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u9875\u9762\u95f4\u901a\u4fe1\u7684\u65b9\u5f0f\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":"
        \u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4ecb\u7ecd\u4e86\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u9875\u9762\u95f4\u901a\u4fe1\u76845\u79cd\u65b9\u5f0f\uff0c\u5185\u5bb9\u633a\u4e0d\u9519\u7684\uff0c\u73b0\u5728\u5206\u4eab\u7ed9\u5927\u5bb6\uff0c\u4e5f\u7ed9\u5927\u5bb6\u505a\u4e2a\u53c2\u8003\u3002 PageModel\uff08\u9875\u9762\u6a21\u578b\uff09\u5bf9\u5c0f\u7a0b\u5e8f\u800c\u8a00\u662f\u5f88\u91cd\u8981\u7684\u4e00\u4e2a\u6982\u5ff5\uff0c\u4eceapp.json\u4e2d\u4e5f\u53ef\u4ee5\u770b\u5230\uff0c\u5c0f\u7a0b\u5e8f\u5c31\u662f\u7531\u4e00\u4e2a\u4e2a\u9875\u9762\u7ec4\u6210\u7684\u3002 \u5982\u4e0a\u56fe\uff0c\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7ed3\u6784\u7684\u5c0f\u7a0b\u5e8f\uff1a\u9996\u9875\u662f\u4e00\u4e2a\u53ccTab\u6846\u67b6PageA\u548cPageB\uff0c\u5b50\u9875\u9762pageB, PageC\u3002 \u8ba9\u6211\u4eec\u5047\u8bbe\u8fd9\u6837\u4e00\u4e2a\u573a\u666f\uff1a\u9996\u9875PageA\u6709\u4e00\u4e2a\u98d8\u6570\uff0c\u5f53\u6211\u4eec\u4ecePageA\u65b0\u5f00PageC\u540e\uff0c\u505a\u4e00\u4e9b\u64cd\u4f5c\uff0c\u518d\u56de\u9000\u5230PageA\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u98d8\u6570\u8981\u5237\u65b0\u3002\u5f88\u663e\u7136\uff0c\u8fd9\u9700\u8981\u5728PageC\u4e2d\u505a\u64cd\u4f5c\u65f6\uff0c\u80fd\u901a\u77e5\u5230PageA,\u4ee5\u4fbfPageA\u505a\u76f8\u5e94\u7684\u8054\u52a8\u53d8\u5316\u3002 \u8fd9\u91cc\u7684\u901a\u77e5\uff0c\u4e13\u4e1a\u70b9\u8bf4\u5c31\u662f\u9875\u9762\u901a\u4fe1\u3002\u6240\u8c13\u901a\u4fe1\uff0cu3\u8ba4\u4e3a\u8981\u6ee1\u8db3\u4e0b\u9762\u4e24\u4e2a\u6761\u4ef6\uff1a \u6fc0\u6d3b\u5bf9\u65b9\u7684\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528 \u80fd\u591f\u5411\u88ab\u6fc0\u6d3b\u7684\u65b9\u6cd5\u4f20\u9012\u6570\u636e \u672c\u6587\u5c06\u6839\u636e\u9879\u76ee\u5b9e\u8df5\uff0c\u7ed3\u5408\u5c0f\u7a0b\u5e8f\u81ea\u8eab\u7279\u70b9\uff0c\u5c31\u5c0f\u7a0b\u5e8f\u9875\u9762\u95f4\u901a\u4fe1\u65b9\u5f0f\u4f5c\u4e00\u4e2a\u63a2\u8ba8\u4e0e\u5c0f\u7ed3\u3002 \u901a\u4fe1\u5206\u7c7b \u6309\u9875\u9762\u5c42\u7ea7\uff08\u6216\u5c55\u793a\u8def\u5f84\uff09\u53ef\u4ee5\u5206\u4e3a\uff1a \u5144\u5f1f\u9875\u9762\u95f4\u901a\u4fe1\u3002\u5982\u591aTab\u9875\u9762\u95f4\u901a\u4fe1\uff0cPageA\uff0cPageB\u4e4b\u95f4\u901a\u4fe1 \u7236\u8def\u5f84\u9875\u9762\u5411\u5b50\u8def\u5f84\u9875\u9762\u901a\u4fe1\uff0c\u5982PageA\u5411PageC\u901a\u4fe1 \u5b50\u8def\u5f84\u9875\u9762\u5411\u7236\u8def\u5f84\u9875\u9762\u901a\u4fe1\uff0c\u5982PageC\u5411PageA\u901a\u4fe1 \u6309\u901a\u4fe1\u65f6\u6fc0\u6d3b\u5bf9\u65b9\u65b9\u6cd5\u65f6\u673a\uff0c\u53c8\u53ef\u4ee5\u5206\u4e3a\uff1a \u5ef6\u8fdf\u6fc0\u6d3b\uff0c\u5373\u6211\u5728PageC\u505a\u5b8c\u64cd\u4f5c\uff0c\u7b49\u8fd4\u56de\u5230PageA\u518d\u6fc0\u6d3bPageA\u7684\u65b9\u6cd5\u8c03\u7528 \u7acb\u5373\u6fc0\u6d3b\uff0c\u5373\u6211\u5728PageC\u505a\u5b8c\u64cd\u4f5c\uff0c\u5728PageC\u6fc0\u6d3bPageA\u7684\u65b9\u6cd5\u8c03\u7528 \u65b9\u5f0f\u4e00\uff1aonShow\/onHide + localStorage \u5229\u7528onShow\/onHide\u6fc0\u6d3b\u65b9\u6cd5\uff0c\u901a\u8fc7localStorage\u4f20\u9012\u6570\u636e\u3002\u5927\u6982\u903b\u8f91\u5982\u4e0b \/\/ pageA let isInitSelfShow = true; Page({  data: {   helloMsg: ‘hello from PageA’  },  onShow() {   \/\/ \u9875\u9762\u521d\u59cb\u5316\u4e5f\u4f1a\u89e6\u53d1onShow\uff0c\u8fd9\u79cd\u60c5\u51b5\u53ef\u80fd\u4e0d\u9700\u8981\u68c0\u67e5\u901a\u4fe1   if (isInitSelfShow) return;   let newHello = wx.getStorageSync(‘__data’);   if (newHello) {    this.setData({     helloMsg: newHello    });    \/\/ \u6e05\u961f\u4e0a\u6b21\u901a\u4fe1\u6570\u636e    wx.clearStorageSync(‘__data’);   }  },  onHide() {   isInitSelfShow = false;  },  goC() {   wx.navigateTo({    url: ‘\/pages\/c\/c’   });  } }); \u767b\u5f55\u540e\u590d\u5236 \/\/ pageC Page({  doSomething() {   wx.setStorageSync(‘__data’, ‘hello from PageC’);  } }); […]<\/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-31915","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/31915","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=31915"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/31915\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=31915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=31915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=31915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}