1 function isOpenMode(){
 2     //平臺、裝置和作業系統
 3     var system = {
 4         win: false,
 5         mac: false,
 6         xll: false,
 7         ipad: false
 8     };
 9     //檢測平臺
10     var p = navigator.platform;
11     system.win = p.indexOf("Win") == 0;
12     system.mac = p.indexOf("Mac") == 0;
13
 
     system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
14     system.ipad = (navigator.userAgent.match(/iPad/i) != null) ? true : false;
15     //跳轉語句，如果是手機訪問就自動跳轉到wap.baidu.com頁面
16     if (system.win || system.mac || system.xll || system.ipad) {
17         var ua = navigator.userAgent.toLowerCase();
 
18         if(ua.match(/MicroMessenger/i)=="micromessenger") {
19             alert("在PC端微信上開啟的");
20             return 2;
21         } else {
22             alert("在PC端非微信上開啟的");
23             return 3;
24         }
25     } else {
26         var ua = navigator.userAgent.toLowerCase();
27         if
 
(ua.match(/MicroMessenger/i)=="micromessenger") {
28             alert("在手機端微信上開啟的");
29             return 1;
30         } else {
31             alert("在手機上非微信上開啟的");
32             return 4;
33         }
34     }
35 }