html获取url携带的参数

function QueryString(qs)
{
    var s = window.location.href;//location.href;
     s = s.replace("?","?&").split("&");
    var re = "";
    for(i=1;i<s.length;i++)
        if(s[i].indexOf(qs+"=")==0)
            re = s[i].replace(qs+"=","");
    return re;
}