解决IE和Firefox获取来源网址Referer的JS方法

if (/MSIE (\d+\.\d+);/.test(navigator.userAgent) || /MSIE(\d+\.\d+);/.test(navigator.userAgent)){
    var referLink = document.createElement('a');
    referLink.href = url;
    document.body.appendChild(referLink);
    referLink.click();
} else {
    location.href = url;
}