JS解析URL参数

function URL_Request(strName) {
    var strHref = document.location.toString();
    var intPos = strHref.indexOf("?");
    var strRight = strHref.substr(intPos + 1); //==========获取到右边的参数部分
    var arrTmp = strRight.split("&"); //=============以&分割成数组

    for (var i = 0; i < arrTmp.length; i++) //===========循环数组
    {
        var dIntPos = arrTmp[i].indexOf("=");
        var paraName = arrTmp[i].substr(0, dIntPos);
        var paraData = arrTmp[i].substr(dIntPos + 1);
        if (paraName.toUpperCase() == strName.toUpperCase()) {
            return paraData;
        }
    }
    return "";
}