Js获取请求地址的参数

Js获取请求地址的参数

/*获取参数*/function getQueryString(name) {    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");    var r = decodeURI(window.location.search).substr(1).match(reg);    if (r != null)        return unescape(r[2]);    return null;}<script type="text/javascript">    var tag_id,moduleid;    var arrCategory = [];    var pager = new Pager();    $(function () {        tag_id = getQueryString("tag_id") == null ? "" : getQueryString("tag_id");        moduleid = getQueryString("moduleid") == null ? "" : getQueryString("moduleid");        islogin();        loadCategory("tag_id");        GetList(1, moduleid, tag_id);        bind();        setTimeout(function () { loadModule(moduleid) }, 500);    });</script>