js代碼：

//平臺(tái)、設(shè)備和操作系統(tǒng)
var system = {
	win: false,
	mac: false,
	xll: false,
	ipad:false
};
//檢測(cè)平臺(tái)
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;
//跳轉(zhuǎn)語(yǔ)句，如果是手機(jī)訪問就自動(dòng)跳轉(zhuǎn)到wap.baidu.com頁(yè)面
if (system.win || system.mac || system.xll||system.ipad) {

} else {

	window.location.href = "http://bangla-expo.com/wap/";
}

騰訊網(wǎng)的適配代碼

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){}
	}
}

	var browser = {
		versions : function() {
			var u = navigator.userAgent, app = navigator.appVersion;
			return {//移動(dòng)終端瀏覽器版本信息                                 
			trident : u.indexOf('Trident') > -1, //IE內(nèi)核                                 
			presto : u.indexOf('Presto') > -1, //opera內(nèi)核                                 
			webKit : u.indexOf('AppleWebKit') > -1, //蘋果、谷歌內(nèi)核                                 
			gecko : u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐內(nèi)核                                
			mobile : !!u.match(/AppleWebKit.*Mobile.*/)
					|| !!u.match(/AppleWebKit/), //是否為移動(dòng)終端                                 
			ios : !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios終端                 
			android : u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android終端或者uc瀏覽器                                 
			iPhone : u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1, //是否為iPhone或者QQHD瀏覽器                    
			iPad: u.indexOf('iPad') > -1, //是否iPad       
			webApp : u.indexOf('Safari') == -1,//是否web應(yīng)該程序，沒有頭部與底部
			google:u.indexOf('Chrome')>-1
		};
	}(),
	language : (navigator.browserLanguage || navigator.language).toLowerCase()
	}
	document.writeln("語(yǔ)言版本: "+browser.language);
	document.writeln(" 是否為移動(dòng)終端: "+browser.versions.mobile);

如何判斷訪問網(wǎng)站的機(jī)器類型-如何判斷ipad

如何判斷是否是 iPad 瀏覽器呢，關(guān)鍵是看它的 User Agent 中是否有 iPad。iPad 使用的是 Safari Mobile 瀏覽器，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(){        
 [object Object] [object Object] [object Object]var ua = navigator.userAgent.toLowerCase();
 [object Object] [object Object] [object Object]if(ua.match(/iPad/i)=="ipad") {                
 [object Object] [object Object] [object Object] [object Object] [object Object] [object Object]return true;
 [object Object] [object Object] [object Object]} else {
 [object Object] [object Object] [object Object] [object Object] [object Object] [object Object]return false;
 [object Object] [object Object] [object Object]}
}


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

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

JS 判斷瀏覽器客戶端類型(ipad,iphone,android)

   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){//獲取參數(shù)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();