限制网页只能在微信浏览器打开
效果：判断网页是否是在微信浏览器打开；
$(function(){//判断页面是否是在微信浏览器打开//对浏览器的UserAgent进行正则匹配，不含有微信独有标识的则为其他浏览器var useragent = navigator.userAgent;if (useragent.match(/MicroMessenger/i) != 'MicroMessenger') {window.location.href = "wxError.html";//若不是微信浏览器，跳转到温馨error页面}
})微信提示页面（代码为微信原生代码）；
<!--wxError.html--><!DOCTYPE html>
<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" /></head><body><script type="text/javascript">var ua = navigator.userAgent.toLowerCase();var isWeixin = ua.indexOf('micromessenger') != -1;var isAndroid = ua.indexOf('android') != -1;var isIos = (ua.indexOf('iphone') != -1) || (ua.indexOf('ipad') != -1);if (!isWeixin) {document.head.innerHTML = '<title>抱歉，出错了</title><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0"><link rel="stylesheet" type="text/css" href="https://res.wx.qq.com/open/libs/weui/0.4.1/weui.css">';document.body.innerHTML = '<div class="weui_msg"><div class="weui_icon_area"><i class="weui_icon_info weui_icon_msg"></i></div><div class="weui_text_area"><h4 class="weui_msg_title">请在微信客户端打开链接</h4></div></div>';}</script></body>
</html>