先了解安卓微信和Ios微信的UA(User agent:用户代理)
安卓微信UA: mozilla/5.0 (linux; u; android 4.1.2; zh-cn; mi-one plus build/jzo54k) applewebkit/534.30 (khtml, like gecko) version/4.0 mobile safari/534.30 micromessenger/5.0.1.352
Ios微信UA: mozilla/5.0 (iphone; cpu iphone os 5_1_1 like mac os x) applewebkit/534.46 (khtml, like gecko) mobile/9b206 micromessenger/5.0
打开Chrome,F12打开开发人员工具,点击菜单按钮—–More Tools —–Network condition打开Network condition窗口

设置好了验证下

<script type="text/javascript">
          window.onload = function() {
              isWeixinBrowser();
        }
          //判断是否微信浏览器
         function isWeixinBrowser() {  
              var ua = navigator.userAgent.toLowerCase();  
              var result = (/micromessenger/.test(ua)) ? true : false;
              if (result) {
                 console.log('你正在访问微信浏览器');
             }
             else {
                 console.log('你访问的不是微信浏览器');
             }
             return result;
         }  
     </script>

 

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