(function(){

var res = GetRequest();

var par = res[‘index‘];

if(par!=‘gfan‘){

var ua=navigator.userAgent.toLowerCase();

var contains=function (a, b){

if(a.indexOf(b)!=-1){return true;}

};

//将下面的http://m.baidu.com改成你的wap手机版地址 如 http://3g.baidu.com

var toMobileVertion = function(){

window.location.href = http://www.mamicode.com/‘http://3g.baidu.com/‘

}

if(contains(ua,"ipad")||(contains(ua,"rv:1.2.3.4"))||(contains(ua,"0.0.0.0"))||(contains(ua,"8.0.552.237"))){return false}

if((contains(ua,"android") && contains(ua,"mobile"))||(contains(ua,"android") && contains(ua,"mozilla")) ||(contains(ua,"android") && contains(ua,"opera"))

||contains(ua,"ucweb7")||contains(ua,"iphone")){toMobileVertion();}

}

})();

function GetRequest() {

   var url = location.search; //获取url中"?"符后的字串

   var theRequest = new Object();

   if (url.indexOf("?") != -1) {

      var str = url.substr(1);

      strs = str.split("&");

      for(var i = 0; i < strs.length; i ++) {

         theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);

      }

   }

   return theRequest;

}

网站手机浏览判断代码