JavaScript中为String对象添加 trim / ltrim / rtrim 方法 (2004-09-16)

发布时间 2004-09-16 10:50:00

JavaScript中为String对象添加 trim() 方法

//自己动手为string添加trim
String.prototype.trim  = function(){return this.replace(/^\s+|\s+$/g,"");}
String.prototype.ltrim = function(){return this.replace(/^\s+/g, "");}
String.prototype.rtrim = function(){return this.replace(/\s+$/g, "");}
var str = "  meizz    ";
alert(str.trim());
alert(str.ltrim());
alert(str.rtrim());