通过JS语句判断WEB网站的访问端是电脑还是手机

 1 <script type="text/javascript"> 
 2 <!-- 
 3         //平台、设备和操作系统 
 4         var system = { 
 5             win: false, 
 6             mac: false, 
 7             xll: false, 
 8             ipad:false 
 9         }; 
10         //检测平台 
11         var p = navigator.platform; 
12         system.win = p.indexOf("Win") == 0; 
13         system.mac = p.indexOf("Mac") == 0; 
14         system.x11 = (p == "X11") || (p.indexOf("Linux") == 0); 
15         system.ipad = (navigator.userAgent.match(/iPad/i) != null)?true:false; 
16         //跳转语句，如果是手机访问就自动跳转到wap.baidu.com页面 
17         if (system.win || system.mac || system.xll||system.ipad) { 
18  
19         } else { 
20  
21             window.location.href = "http://www.jdpatro.com/3g/"; 
22         } 
23 --> 
24 </script> 

 1 <script type="text/javascript">  
 2 if(/AppleWebKit.*Mobile/i.test(navigator.userAgent) || (/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/.test(navigator.userAgent))){ 
 3     if(window.location.href.indexOf("?mobile")<0){ 
 4         try{ 
 5             if(/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){ 
 6                 window.location.href="http://shipei.qq.com/index.htm"; 
 7             }else if(/iPad/i.test(navigator.userAgent)){ 
 8             }else{ 
 9                 window.location.href="http://shipei.qq.com/simple/s/index/" 
10             } 
11         }catch(e){} 
12     } 
13 } 
14 </script> 

 1 <script type="text/javascript"> 
 2     var browser = { 
 3         versions : function() { 
 4             var u = navigator.userAgent, app = navigator.appVersion; 
 5             return {//移动终端浏览器版本信息                                  
 6             trident : u.indexOf('Trident') > -1, //IE内核                                  
 7             presto : u.indexOf('Presto') > -1, //opera内核                                  
 8             webKit : u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核                                  
 9             gecko : u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核                                 
10             mobile : !!u.match(/AppleWebKit.*Mobile.*/) 
11                     || !!u.match(/AppleWebKit/), //是否为移动终端                                  
12             ios : !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端                  
13             android : u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器                                  
14             iPhone : u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1, //是否为iPhone或者QQHD浏览器                     
15             iPad: u.indexOf('iPad') > -1, //是否iPad        
16             webApp : u.indexOf('Safari') == -1,//是否web应该程序，没有头部与底部 
17             google:u.indexOf('Chrome')>-1 
18         }; 
19     }(), 
20     language : (navigator.browserLanguage || navigator.language).toLowerCase() 
21     } 
22     document.writeln("语言版本: "+browser.language); 
23     document.writeln(" 是否为移动终端: "+browser.versions.mobile); 
24 </script> 

 1 <script type="text/javascript">  
 2    var bForcepc 
 3 = fGetQuery("dv") == "pc";   
 4    function 
 5 fBrowserRedirect(){   
 6        var sUserAgent = navigator.userAgent.toLowerCase();  
 7        var bIsIpad = sUserAgent.match(/ipad/i) == 
 8 "ipad";    
 9        var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";  
10        var bIsMidp = sUserAgent.match(/midp/i) == "midp";  
11        var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";  
12        var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";  
13        var bIsAndroid = sUserAgent.match(/android/i) == "android";  
14        var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";  
15        var bIsWM = sUserAgent.match(/windows mobile/i) == "windows 
16 mobile";   
17        if(bIsIpad){   
18            var sUrl = 
19 location.href;      
20            if(!bForcepc){   
21                window.location.href = "http://ipad.mail.163.com/";  
22            }   
23        }   
24        if(bIsIphoneOs || bIsAndroid){   
25            var sUrl = 
26 location.href;      
27            if(!bForcepc){   
28                window.location.href = "http://smart.mail.163.com/";  
29            }   
30        }   
31        if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){   
32            var sUrl = 
33 location.href;      
34            if(!bForcepc){   
35                window.location.href = "http://m.mail.163.com/";  
36            }   
37        }   
38    }  
39    function 
40 fGetQuery(name){//获取参数值   
41        var sUrl = window.location.search.substr(1);  
42        var r = sUrl.match(new RegExp("(^|&)" + name + 
43 "=([^&]*)(&|$)"));  
44        return (r == null ? null : (r[2]));  
45    }  
46    function 
47 fShowVerBlock(){     
48        if(bForcepc){   
49            document.getElementByIdx_x("dv_block").style.display = "block";  
50        }   
51        else{   
52            document.getElementByIdx_x("ad_block").style.display = "block";  
53        }   
54    }  
55    fBrowserRedirect();   
56    </script>