warning ie

public/index.html

     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
-    
     <link rel="icon" href="<%= BASE_URL %>favicon.ico">
     <link rel="stylesheet" type="text/css"media="screen and (max-device-width: 400px)" href="tinyScreen.css" />
+
+    <script>
+      if (navigator.userAgent.toLocaleLowerCase().match(/msie|trident/)) {
+        alert('暂不支持您的浏览器(模式), 推荐使用 Chrome 或者 Firefox')
+      }
+    </script>
+
     <script src="/static/js/jquery.min.js"></script>
     <!-- <script src="./until/jquery-1.8.3.min.js"></script> -->
     <script src="/bootstrap/js/bootstrap.min.js"></script>