解决新版谷歌浏览器无法关闭窗口的问题

之前用这段脚本是可以关闭的：

window.opener = null;
window.open('', '_self');
window.close();

新版的谷歌浏览器是无效的，会提示错误：Scripts may close only the windows that were opened by it

实在是跟不上浏览器更新的节奏~

改成下面的代码，可以解决：

var userAgent = navigator.userAgent;
if (userAgent.indexOf("Firefox") != -1 || userAgent.indexOf("Chrome") !=-1) {
    location.href="about:blank";
} else {
    window.opener = null;
    window.open('', '_self');
}
window.close();