js获得url地址携带参数

function GetQueryString(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return (r[2]); return null;
}

使用  

页面当前地址    http://localhost:9489/AppMWeb/Submodule/CU/AddFamilyMember.aspx?CustomerID=23384438&Role=1;

var s = GetQueryString(CustomerID);

console.log(23384438);