判断页面在手机和pc打开的方法

正则和三木

window.location.href = /Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent) ? "https://www.baidu.com/" : "http://news.baidu.com/";

eg2.

 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
 2 <HTML>
 3  <HEAD>
 4   <TITLE> New Document </TITLE>
 5  </HEAD>
 6  
 7  <BODY>
 8   <SCRIPT LANGUAGE="JavaScript">
 9   <!--
10 function detectOS(){  
11     var sUserAgent = navigator.userAgent; 
12     var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");                                                                        
13     var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh"); 
14     if(isMac) return "Mac"; 
15     var isUnix = (navigator.platform == "X11") && !isWin && !isMac; 
16     if(isUnix) return "Unix"; 
17     var isLinux = (String(navigator.platform).indexOf("Linux") > -1); 
18     if(isLinux) return "Linux"; 
19     if(isWin) 
20     {  
21         var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1; 
22         if(isWin2K) return "Win2000"; 
23         var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") > -1; 
24         if(isWinXP) return "WinXP"; 
25         var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1; 
26         if(isWin2003) return "Win2003"; 
27     }  
28     return "None"; 
29 }
30  
31 alert(detectOS())
32  
33   //-->
34   </SCRIPT>
35  </BODY>
36 </HTML>

eg3.

 1 function IsPC() {
 2     var userAgentInfo = navigator.userAgent;
 3     var Agents = ["Android", "iPhone",
 4                 "SymbianOS", "Windows Phone",
 5                 "iPad", "iPod"];
 6     var flag = true;
 7     for (var v = 0; v < Agents.length; v++) {
 8         if (userAgentInfo.indexOf(Agents[v]) > 0) {
 9             flag = false;
10             break;
11         }
12     }
13     return flag;
14 }

eg4.

function browserRedirect() {
    var sUserAgent = navigator.userAgent.toLowerCase();
    var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
    var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
    var bIsMidp = sUserAgent.match(/midp/i) == "midp";
    var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
    var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
    var bIsAndroid = sUserAgent.match(/android/i) == "android";
    var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
    var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
    if (!(bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) ){
        window.location.href=B页面;
    }
}
browserRedirect();