通过JS语句判断WEB网站的访问端是电脑还是手机

在实际项目开发中，可能会通过JS语句判断WEB网站的访问端是电脑还是手机，以显示不同的页面。下面是我爱模板网总结的js判断设备，然后跳转到手机站或PC站：

JS 判断浏览器客户端类型(ipad,iphone,android)

<script type="text/javascript"> 
    //平台、设备和操作系统 
    var system = { 
        win: false, 
        mac: false, 
        xll: false, 
        ipad:false 
    }; 
    //检测平台 
    var p = navigator.platform; 
    system.win = p.indexOf("Win") == 0; 
    system.mac = p.indexOf("Mac") == 0; 
    system.x11 = (p == "X11") || (p.indexOf("Linux") == 0); 
    system.ipad = (navigator.userAgent.match(/iPad/i) != null)?true:false; 
    //跳转语句，如果是手机访问就自动跳转到wap.baidu.com页面 
    if (system.win || system.mac || system.xll||system.ipad) { 
    	window.location.href = "http://5imoabn.net/"; 
    } else { 
        window.location.href = "http://wap.baidu.com/";
    } 
</script>

腾讯网的适配代码

<script type="text/javascript">  
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))){
    if(window.location.href.indexOf("?mobile")<0){
        try{
            if(/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){
                window.location.href="http://shipei.qq.com/index.htm";
            }else if(/iPad/i.test(navigator.userAgent)){
            }else{
                window.location.href="http://shipei.qq.com/simple/s/index/"
            }
        }catch(e){}
    }
}
</script>

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

如何判断访问网站的机器类型-如何判断ipad

如何判断是否是 iPad 浏览器呢，关键是看它的 User Agent 中是否有 iPad。iPad 使用的是 Safari Mobile 浏览器，他的的 User Agent 是：

Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10

function is_iPad(){        
    var ua = navigator.userAgent.toLowerCase();
    if(ua.match(/iPad/i)=="ipad") {                
        return true;
    } else {
        return false;
    }
}


$is_iPad = (bool) strpos($_SERVER['HTTP_USER_AGENT'],'iPad');

RewriteCond %{HTTP_USER_AGENT} ^.*iPad.*$
RewriteRule ^(.*)$ http://ipad.fairyfish.net [R=301]

JS 判断浏览器客户端类型(ipad,iphone,android)

<script type="text/javascript">  
var bForcepc = fGetQuery("dv") == "pc";   
function fBrowserRedirect(){   
   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){   
       var sUrl = location.href;      
       if(!bForcepc){   
           window.location.href = "http://ipad.mail.163.com/";  
       }   
   }   
   if(bIsIphoneOs || bIsAndroid){   
       var sUrl =
location.href;      
       if(!bForcepc){   
           window.location.href = "http://smart.mail.163.com/";  
       }   
   }   
   if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){   
       var sUrl =
location.href;      
       if(!bForcepc){   
           window.location.href = "http://m.mail.163.com/";  
       }   
   }   
}
function fGetQuery(name){//获取参数值   
   var sUrl = window.location.search.substr(1);  
   var r = sUrl.match(new RegExp("(^|&)" + name +
"=([^&]*)(&|$)"));  
   return (r == null ? null : (r[2]));  
}  
function fShowVerBlock(){     
   if(bForcepc){   
       document.getElementByIdx_x("dv_block").style.display = "block";  
   }   
   else{   
       document.getElementByIdx_x("ad_block").style.display = "block";  
   }   
}  
fBrowserRedirect();   
</script> 

最后，奉上我爱模板网一直使用的js判断手机站还是pc站，然后跳转的代码：

function jump(){
    var u = navigator.userAgent;
    var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端
    var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
    var dWidth = window.screen.width;
    if(isAndroid || isiOS || dWidth<768){
        window.open('这里放手机网站首页地址',"_self");
    }else{
        window.open('这里放PC站首页网址',"_self");
    }
}