getParameter 메소드 만들어 쓰기

var Request = function()
{
    this.getParameter = function( name )
    {
        var rtnval = "";
        var nowAddress = unescape(location.href);
        var parameters = (nowAddress.slice(nowAddress.indexOf("?")+1,nowAddress.length)).split("&");

        for(var i = 0 ; i < parameters.length ; i++)
        {
            var varName = parameters[i].split("=")[0];
            if(varName.toUpperCase() == name.toUpperCase())
            {
                rtnval = parameters[i].split("=")[1];
                break;
            }
        }
        return rtnval;
    }
}

사용방법

var request = new Request();
alert(request.getParameter("os"));