In-depth explanation of js overwriting original methods and providing rewriting methods-JS Tutorial-php.cn

In-depth explanation of js overwriting original methods and providing rewriting methods

亚连

Release： 2018-05-17 10:17:43

Original

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If you make an editor, which provides some cursor leave events, etc., it is best to use this method to operate, because When others use your editor, they may need to use the event methods provided by the editor to handle some things. Some of the events need to be rewritten according to special requirements. Therefore, when this happens, provide the event method that allows the rewriting of the events provided by the editor. Method is very necessary!

<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<script> 
    function myblur () { 
        alert("1、离开"); 
    } 
    function bindEvent(func){ 
        myblur = func; 
    } 
    function myonclick() { 
        bindEvent(function(){ 
            alert("天啊!myblur方法被覆盖了！"); 
        }); 
    } 
</script> 
</head> 
<body> 
<input type="text" onblur="myblur()" value="光标选中然后光标离开会调用myblur()方法"/> 
<input type="button" onclick="myonclick()" value="覆盖myblur()" /> 
注：覆盖myblur()后，再次光标选中输入框然后再离开 
</body> 
</html>

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Purpose: To improve the perfect calling method.

The above is the js I compiled for everyone to cover the original method and provide a rewriting method. I hope it will be helpful to everyone in the future.

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