获取URL参数

<span style="font-size:32px;">function getUrlParam(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return decodeURI(r[2]); return null;
}</span>