js 判断浏览器类型

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

类似的，遨游的是：

Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.12 (KHTML, like Gecko) Maxthon/3.4.2.3000 Chrome/18.0.966.0 Safari/535.12

 

// 判断是否为ipad浏览器

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

// 下面是一个判断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 : unescape(r[2]));  
}  
function fShowVerBlock(){     
    if(bForcepc){  
        document.getElementById("dv_block").style.display = "block";  
    }  
    else{  
        document.getElementById("ad_block").style.display = "block";  
    }  
}  
fBrowserRedirect();  
</script>