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The use of object-oriented 3-this

Source: Internet
Author: User
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1. This will point to window when there is a timer

<script type= "Text/javascript" >function Aaa () {var _this=this;  _this indicates that aaathis.a=12;setinterval (function () {//console.log (this)  //this represents Window_this.show ();},1000)} Aaa.prototype.show=function () {console.log (THIS.A)}var obj=new Aaa ();//obj.show () </script>

2. This will point to the event object when there is an event

<!doctype html>
　　
The use of object-oriented 3-this

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