URLParser类代码

/* 
@class:     URLParser 
*/  
URLParser = function(sUrl){  
    this._init(sUrl);  
}  
URLParser.prototype._init=function(sUrl){  
    this._url = sUrl || document.location.href;  
}  
URLParser.prototype.getDomain = function(){  
    if (this._url.match(new RegExp('^(([a-z]+)://([^\\/]+)\/?)(.*)', 'i'))){  
        return RegExp.$1;  
    }else{  
        return null;  
    }  
}  
URLParser.prototype.getParameter = function(sName){  
    if (this._url.match(new RegExp("(&|\\u003F)" + sName + "=([^&]*)(&|$)"))){  
        return RegExp.$2;  
    }else{  
        return null;  
    }  
}  

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