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Javascript remove custom array deletion method

高洛峰

Release： 2017-01-20 11:04:32

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1534 people have browsed it

<html xmlns="http://www.w3.org/1999/xhtml" > 
<head> 
<title>Javascript自定义数组删除方法remove()</title> 
<script type="text/javascript"> 
　Array.prototype.remove=function(dx){ 
　　 if(isNaN(dx)||dx>this.length){return false;} 
　　 for(var i=0,n=0;i<this.length;i++){ 
　　　　 if(this[i]!=this[dx]){ 
　　　　　　 this[n++]=this[i] 
　　　　 } 
　　 } 
　　 this.length-=1 
　 } 
function f(){ 
var str = "001|002|003";// 
var arr = str.split("|"); 
alert("删除前数组长度：" + arr.length); 
for(var i=0;i<arr.length;i++){ 
alert(arr[i]); 
} 
arr.remove(1);//javascript本来是不包含些函数的。 
alert("删除后数组长度：" + arr.length); 
for(var i=0;i<arr.length;i++){ 
alert(arr[i]); 
} 
} 
</script> 
</head> 
<body> 
<input type="button" onclick="f();" value="ok" /> 
</body> 
</html>

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