JS判断是手机访问网站还是电脑访问网站

代码如下：

<script type="text/javascript" language="javascript">// <![CDATA[
(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://wap.gkroot.com/改成你的wap手机版地址
var toMobileVertion = function(){
window.location.href = 'http://wap.gkroot.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.split("=")[0]]=unescape(strs.split("=")[1]);
}
}
return theRequest;
}
// ]]></script>

手机测试了下还不错。