function getCookie(name) {//获取name为
    var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");

    if (arr = document.cookie.match(reg)) {
        return decodeURI(arr[2]);
    } else {
        return null;
    }
}

function hasQueryString(name) {
    var reg = new RegExp("(^|&)" + name);
    var r = window.location.search.substr(1).match(reg);
    if (r) {
        return true
    }
    return false
}