{"id":30016,"date":"2024-11-25T10:37:57","date_gmt":"2024-11-25T02:37:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/30016\/"},"modified":"2024-11-25T10:37:57","modified_gmt":"2024-11-25T02:37:57","slug":"%e5%a4%9a%e4%b8%aa%e9%a1%b5%e9%9d%a2%e4%bc%a0%e5%8f%82%e9%80%9a%e4%bf%a1%e5%9c%a8%e5%be%ae%e4%bf%a1%e5%b0%8f%e7%a8%8b%e5%ba%8f%e4%b8%ad%e7%9a%84%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/30016\/","title":{"rendered":"\u591a\u4e2a\u9875\u9762\u4f20\u53c2\u901a\u4fe1\u5728\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4e2d\u7684\u5b9e\u73b0"},"content":{"rendered":"

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\u524d\u8a00<\/strong><\/span><\/p>\n

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\u4e1a\u52a1\u5206\u6790<\/strong><\/span><\/p>\n

\u6b64\u7c7b\u9700\u6c42\u5927\u6982\u610f\u601d\u662f\uff1aA\u9875\u9762\u8fdb\u5165B\u9875\u9762\uff0cB\u9875\u9762\u8fd4\u56de\u5e76\u7ed9A\u3002<\/p>\n

\u63a2\u7d22\u4e4b\u8def<\/strong><\/span><\/p>\n

\u521a\u5f00\u59cb\u6211\u60f3\u91c7\u7528\u4e00\u4e2a\u6bd4\u8f83\u5077\u61d2\u7684\u65b9\u6cd5\uff0c\u5229\u7528\u5fae\u4fe1\u7684wx.setStorage\u5728B\u9875\u9762\u5b58\u50a8\uff0c\u8fd4\u56deA\u9875\u9762\uff0c\u5728onshow\u65b9\u6cd5\u91cc\u8c03\u7528wx.getStorage\u8bfb\u53d6\u7f13\u5b58\u6765\u5b9e\u73b0\u6b64\u529f\u80fd\u3002\u4f46\u662f\u60f3\u60f3\u89e3\u51b3\u65b9\u5f0f\u8fc7\u4e8e\u6295\u673a\u53d6\u5de7\uff0c\u4e5f\u4f1a\u7ed9\u65e5\u540e\u7ef4\u62a4\u5e26\u6765\u5927\u91cf\u9690\u60a3\u3002
\u968f\u540e\u6211\u5728\u7f51\u4e0a\u627e\u5230\u83b7\u53d6\u524d\u4e00\u4e2apage\u7684\u65b9\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u6b64\u529f\u80fd\uff0c\u90e8\u5206\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

var pages = getCurrentPages();\r\nvar currPage = pages[pages.length - 1]; \/\/\u5f53\u524d\u9875\u9762\r\nvar prevPage = pages[pages.length - 2]; \/\/\u4e0a\u4e00\u4e2a\u9875\u9762\r\n\r\n\/\/\u76f4\u63a5\u8c03\u7528\u4e0a\u4e00\u4e2a\u9875\u9762\u7684setData()\u65b9\u6cd5\uff0c\u628a\u6570\u636e\u5b58\u5230\u4e0a\u4e00\u4e2a\u9875\u9762\u4e2d\u53bb\r\nprevPage.setData({\r\n mdata:1 \r\n})<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ed4\u7ec6\u60f3\u4e86\u4e0b\uff0c\u4ee3\u7801\u4e5f\u4e0d\u662f\u5f88\uff0c\u56e0\u4e3a\u8fdbB\u9875\u9762\u7684\u5165\u53e3\u53ef\u80fd\u662f\u591a\u4e2a\uff0c\u8fd9\u6837\u4f1a\u5bfc\u81f4\u83b7\u53d6\u7684page\u51fa\u9519\u3002<\/p>\n
\u672c\u6765\u662f\u6ca1\u62db\u4e86\uff0c\u7a81\u7136\u60f3\u5230\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u652f\u6301js\uff0c\u7136\u540e\u5c31\u627e\u4e86\u4e2a\u8f7b\u91cf\u7ea7\u7684js\u5e93\uff0c\u800c\u4e14\u662f\uff0c\u662f\u6211\u60f3\u8981\u7684\u7c7b\u578b\u3002\u4e8e\u662f\uff0c\u597d\u620f\u5f00\u59cb\u4e86<\/p>\n
onfire.js\u4ecb\u7ecd<\/strong><\/span><\/p>\n
onfire.js \u662f\u4e00\u4e2a\u5f88\u7b80\u5355\u7684\u5206\u53d1\u7684\u5e93\uff08\u4ec5\u4ec5 0.9kb\uff09\uff0c\u7b80\u6d01\u5b9e\u7528\u3002<\/p>\n
\u53ef\u4ee5\u7528\u4e8e:<\/strong><\/p>\n
    \n
  • \n
    \u7b80\u5355\u7684\u4e8b\u4ef6\u5206\u53d1\uff1b<\/p>\n<\/li>\n
  • \n
    \u5728  \/ vue.js \/ angular \u7528\u4e8e\u8de8\u7ec4\u4ef6\u7684\u8f7b\u91cf\u7ea7\u5b9e\u73b0\uff1b<\/p>\n<\/li>\n
  • \n
    \u4e8b\u4ef6\u8ba2\u9605\u548c\u53d1\u5e03\uff1b<\/p>\n<\/li>\n<\/ul>\n
    \u5b9e\u8df5<\/strong><\/span><\/p>\n
    \u6574\u7406\u4e0b\u601d\u8def\u5982\u4e0b\uff1a<\/strong><\/p>\n
      \n
    • \n
      A\u9875\u9762\u5148\u8ba2\u9605\u4e00\u4e2a\u4e8b\u4ef6\uff0c\u5e76\u5b9a\u4e49\u5904\u7406\u65b9\u6cd5\u3002<\/p>\n<\/li>\n
    • \n
      B\u9875\u9762\u8fd4\u56de\u65f6\u3002<\/p>\n<\/li>\n
    • \n
      A\u9875\u9762\u5378\u8f7d\u65f6\uff0c\u89e3\u9664\u8ba2\u9605\u3002<\/p>\n<\/li>\n<\/ul>\n
      A\u9875\u9762\u4ee3\u7801\uff1a<\/strong><\/p>\n
      var onfire = require(\"..\/utils\/onfire.js\");\r\nvar that;\r\nvar eventObj = onfire.on('key', function () {\r\n \/\/\u505a\u5177\u4f53\u7684\u4e8b\r\n});\r\n\r\nPage({\r\n data: {\r\n },\r\n onLoad: function(options) {\r\n \/\/ Do some initialize when page load.\r\n },\r\n onReady: function() {\r\n \/\/ Do something when page ready.\r\n },\r\n onUnload: function (e) {\r\n onfire.un('key');\r\n onfire.un(eventObj2);\r\n }\r\n})<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u76f4\u63a5\u8c03\u7528onfire.on\u65b9\u6cd5\u8ba2\u9605\u4e00\u4e2a\u540d\u5b57\u4e3akey\u7684\u6d88\u606f\uff0c\u5e76\u4e14\u65e0\u4f20\u53c2\u3002\u5982\u679c\u9700\u8981\u4f20\u53c2\u7684\u8bdd\uff0c\u76f4\u63a5\u5728function\u91cc\u589e\u52a0\u53c2\u6570\u5373\u53ef\uff0c\u5982var eventObj = onfire.on(‘key’, function (data)… \u3002<\/p>\n
      \u9700\u8981\u6ce8\u610f\uff1a<\/strong><\/span>\u4e00\u5b9a\u8981\u5728onUnload\u91cc\u53d6\u6d88\u8ba2\u9605key\u7684\u6d88\u606f\uff0c\u5e76\u53d6\u6d88\u7ed1\u5b9aeventObj\u3002<\/p>\n
      B\u9875\u9762\u91cc\u4ee3\u7801\u5728\u56de\u8c03\u7684\u5730\u65b9\u52a0\u5165<\/strong><\/p>\n
       onfire.fire('key');\/\/key\u4e3a\u4e0a\u6587\u4e2d\u8ba2\u9605\u7684\u6d88\u606f\r\n \/\/\u6709\u53c2\u6570\u65f6\r\n onfire.fire('key','test');<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u5206\u6790\u5e93\u4ee3\u7801<\/strong><\/span><\/p>\n
       function _bind(eventName, callback, is_one, context) {\r\n if (typeof eventName !== string_str || typeof callback !== function_str) {\r\n  throw new Error('args: '+string_str+', '+function_str+'');\r\n }\r\n if (! hasOwnKey(onfireEvents, eventName)) {\r\n  onfireEvents[eventName] = {};\r\n }\r\n onfireEvents[eventName][++cnt] = [callback, is_one, context];\r\n\r\n return [eventName, cnt];\r\n }<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4ece\u4ee3\u7801\u4e2d\u53ef\u4ee5\u770b\u51fa\u8ba2\u9605on\u65b9\u6cd5\u7684\u65f6\u5019\u5b9e\u9645\u8c03\u7528_bind\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\uff0c\u4e3b\u8981\u662f\u5229\u7528\u4e00\u4e2a\u6765\u5b58\u50a8\u8ba2\u9605\u7684\u3002<\/p>\n
       function _fire_func(eventName, args) {\r\n if (hasOwnKey(onfireEvents, eventName)) {\r\n  _each(onfireEvents[eventName], function(key, item) {\r\n  item[0].apply(item[2], args); \/\/\u6267\u884c\u8ba2\u9605\u65f6\u7684\u65b9\u6cd5\r\n  if (item[1]) delete onfireEvents[eventName][key]; \/\/ \u5f53\u7c7b\u578b\u4e3a\u53ea\u8ba2\u9605\u4e00\u6b21\u65f6\uff0c\u901a\u77e5\u540e\u5373\u79fb\u9664\u81ea\u5df1\u3002\r\n  });\r\n }\r\n }<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u800cfire\u53d1\u9001\u6d88\u606f\u65b9\u6cd5\u5b9e\u8d28\u8c03\u7528_fire_func\u65b9\u6cd5\uff0c\u901a\u8fc7\u540d\u5b57key\u6765\u904d\u5386\u8ba2\u9605\u8005\uff0c\u7136\u540e\u901a\u77e5\u8ba2\u9605\u8005\u3002<\/p>\n
       function un(event) {\r\n var eventName, key, r = false, type = typeof event;\r\n if (type === string_str) {\r\n  \/\/ \u5982\u679c\u5b58\u5728key\u503c\uff0c\u5219\u79fb\u9664\u6570\u7ec4\r\n  if (hasOwnKey(onfireEvents, event)) {\r\n  delete onfireEvents[event];\r\n  return true;\r\n  }\r\n  return false;\r\n }\r\n else if (type === 'object') {\r\n  eventName = event[0];\r\n  key = event[1];\r\n  \/\/\u5982\u679c\u627e\u5230\u8fd9\u4e2a\u5bf9\u8c61\u5219\u5378\u8f7d\r\n  if (hasOwnKey(onfireEvents, eventName) &amp;&amp; hasOwnKey(onfireEvents[eventName], key)) {\r\n  delete onfireEvents[eventName][key];\r\n  return true;\r\n  }\r\n  \/\/\u5426\u5219\u8fd4\u56defalse\r\n  return false;\r\n }\r\n else if (type === function_str) {\r\n  \/\/\u4e24\u5c42\u5faa\u73af\u6765\u5224\u65ad\u662f\u5426\u662f\u65b9\u6cd5\u540d\r\n  _each(onfireEvents, function(key_1, item_1) {\r\n  _each(item_1, function(key_2, item_2) {\r\n   if (item_2[0] === event) {\r\n   delete onfireEvents[key_1][key_2];\r\n   r = true;\r\n   }\r\n  });\r\n  });\r\n  return r;\r\n }\r\n return true;\r\n }<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
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      \u603b\u7ed3<\/strong><\/span><\/p>\n
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