var useragent = navigator.userAgent;
if (useragent.match(/MicroMessenger/i) != ‘MicroMessenger‘) {
//来源不是微信则强行关闭页面
var opened = window.open(‘about:blank‘, ‘_self‘);
opened.opener = null;
opened.close();
}
原文：http://www.cnblogs.com/GoTing/p/7235668.html