移动端和PC端区分

1、移动端包括：浏览器、ios/android、qq端、微信端

　　九度数据官网源码。修改，要跳转的链接即可。

 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='http://m.baidu.com/';
        }
    }

  2、腾讯官网源码

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|Windows Phone|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){
                window.location.href="http://xw.qq.com/index.htm";
            }else if(/iPad/i.test(navigator.userAgent)){
              //window.location.href="http://www.qq.com/pad/"
            }else{
                window.location.href="http://xw.qq.com/simple/s/index/"
            }
        }catch(e){}
    }
    }

 3、360官网源码

var is_mobi =navigator.userAgent.toLowerCase().match(/(ipod|iphone|android|coolpad|mmp|smartphone|midp|wap|xoom|symbian|j2me|blackberry|wince)/i) != null;
            if(is_mobi){
                window.location.href = "http://m.360.com";
            }

 4、网易官网源码

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))) {
        try {
            if(/Android|Windows Phone|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)) {
                window.location.href = "http://3g.163.com";
            } else if(/iPad/i.test(navigator.userAgent)) {
                window.location.href = "http://www.163.com/ipad/";
            }
        } catch(e) {}
    }