获取带参值

//获取带参
function getPramVal(name, param) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = (param || window.location.search).substr(1).match(reg);

    if (r != null) {
        return unescape(r[2]);
    }
    return null;
}