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微信公开课小程序热门讨论关于「小程序中闭包问题」的小程序开发问题
补充:varuser=TheGlobal;varobj={user:Theobject,getUser:function(){returnfunction(){returnthisuser;}}};Page({页面的初始数据data:{},btn_run:function(){console
展开:varuser=TheGlobal;varobj={user:Theobject,getUser:function(){returnfunction(){returnthisuser;}}};Page({** *页面的初始数据 *data:{},btn_run:function(){consolelog(objgetUser()());}})如上所述代码，在闭包中使用this对象调用obj对象中的user属性时，会报名undifine错误这是为什么VM1646:1thirdScriptErrorCannotreadpropertyuserofundefined;atpagesindexindexpagebtn_runfunctionTypeError:Cannotreadpropertyuserofundefined athttp:127001:63456appservicepagesindexindexjs:8:18 atebtn_run(http:127001:63456appservicepagesindexindexjs:21:30) ate<anonymous(http:127001:63456appservice__dev__WAServicejs:18:4907) atea(http:127001:63456appservice__dev__WAServicejs:17:31002) atz(http:127001:63456appservice__dev__WAServicejs:17:24941) atFunction<anonymous(http:127001:63456appservice__dev__WAServicejs:17:26562) athttp:127001:63456appservice__dev__WAServicejs:18:509 athttp:127001:63456appservice__dev__WAServicejs:6:26768 ate(anonymousfunction)(http:127001:63456appservice__dev__WAServicejs:4:4917) ata(http:127001:63456appserviceappservice:1008:9451)即速小程序：小程序的页面内的全局变量，应该是需要放在data里的可以去了解一下vuejs跟小程序的js还是比较相通的：可以参考一下javascript中this的用法：请问这里是在干嘛，看不懂你在写什么，能讲解一下吗varobj={user:Theobject,getUser:function(){returnfunction(){returnthisuser;}}};
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