获取地址栏某个参数

获取地址栏某个参数

eg：

    http://localhost/invoice/application/web/index.php?r=apply%2Fhistory&year=2017

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

alert(GetQueryString(\'year\'));

就能拿到2017了