javascript prototype

时间：2014-10-27 15:31:18 收藏：0 阅读：166

String.prototype.trim = function() {  
    return this.replace(/^\s+|\s+$/g,"");  
}  
String.prototype.ltrim = function() {  
    return this.replace(/^\s+/,"");  
}  
String.prototype.rtrim = function() {  
    return this.replace(/\s+$/,"");  
}