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<script type="text/javascript">
String.prototype.replaceAll = stringReplaceAll;

function stringReplaceAll(AFindText,ARepText){
var raRegExp = new RegExp(AFindText.replace(/([\(\)\[\]\{\}\^\$\+\-\*\?\.\"\'\|\/\\])/g,"\\$1"),"ig");
return this.replace(raRegExp,ARepText);
}

var ssString="[url]www.cnlei.com;www.CnLei.net;www.cnlei.org";[/url]
alert(ssString.replaceAll("cnlei","iecn"));

ssString="www.${MyName}.com;www.${MyName}.net;www.${MyName}.org";
alert(ssString.replaceAll("${MyName}","cnlei"));

ssString="www.{MyName}.com;www.{MyName}.net;www.{MyName}.org";
alert(ssString.replaceAll("{MyName}","cnlei"));
</script>

以前使用方法一：（可实现忽略大小，但无法实现特殊符号的替换）

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<script type="text/javascript">
String.prototype.replaceString = stringReplaceAll;

function stringReplaceAll(AFindText,ARepText){
var raRegExp = new RegExp(AFindText,"ig");
return this.replace(raRegExp,ARepText);
}

var ssString="[url]www.cnlei.com;www.CnLei.net;www.cnlei.org";[/url]
alert(ssString.replaceString("cnlei","iecn"));

ssString="www.${MyName}.com;www.${MyName}.net;www.${MyName}.org";
alert(ssString.replaceString("${MyName}","cnlei"));

ssString="www.{MyName}.com;www.{MyName}.net;www.{MyName}.org";
alert(ssString.replaceString("{MyName}","cnlei"));
</script>

以前使用的方式二：（可替换特殊符号$等，但无法忽略大小写）

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<script type="text/javascript">
String.prototype.replaceString = function(s1,s2){
this.str=this;
if(s1.length==0)return this.str;
var idx=this.str.indexOf(s1);
while(idx>=0){
this.str=this.str.substring(0, idx)+s2+this.str.substr(idx+s1.length);
idx=this.str.indexOf(s1);
}
return this.str;
}
var ssString="[url]www.cnlei.com;www.CnLei.net;www.cnlei.org";[/url]
alert(ssString.replaceString("cnlei","iecn"));

ssString="www.${MyName}.com;www.${MyName}.net;www.${MyName}.org";
alert(ssString.replaceString("${MyName}","cnlei"));

ssString="www.{MyName}.com;www.{MyName}.net;www.{MyName}.org";
alert(ssString.replaceString("{MyName}","cnlei"));
</script>本文出自 51CTO.COM技术博客