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现在使用手机上网的人越来越多，一些下载网站会通过判断不同系统手机来访问不同网页，比如iPhone和Android。下面我们就来介绍一下如何用javascript判断iPhone或Android手机访问
网上常用的代码
/**
* [isMobile 判断平台]
* @param test: 0:iPhone 1:Android
*/
function ismobile(test){
var u = navigator.userAgent, app = navigator.appVersion;
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(/iPhone|mac|iPod|iPad/i.test(navigator.userAgent)){
return ‘0‘;
}else{
return ‘1‘;
}
}catch(e){}
}
}else if( u.indexOf(‘iPad‘) > -1){
return ‘0‘;
}else{
return ‘1‘;
}
};
使用方法：
var pla=ismobile(1);
如果pla返回的是0:iPhone 1:Android
代码一、
<script type="text/javascript">
var browser = {
versions: function () {
var u = navigator.userAgent, app = navigator.appVersion;
return {//移动终端浏览器版本信息
trident: u.indexOf(‘Trident‘) > -1, //IE内核
presto: u.indexOf(‘Presto‘) > -1, //opera内核
webKit: u.indexOf(‘AppleWebKit‘) > -1, //苹果、谷歌内核
gecko: u.indexOf(‘Gecko‘) > -1 && u.indexOf(‘KHTML‘) == -1, //火狐内核
mobile: !!u.match(/AppleWebKit.*Mobile/i) || !!u.match(/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/), //是否为移动终端
ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端
android: u.indexOf(‘Android‘) > -1 || u.indexOf(‘Linux‘) > -1, //android终端或者uc浏览器
iPhone: u.indexOf(‘iPhone‘) > -1 || u.indexOf(‘Mac‘) > -1, //是否为iPhone或者QQHD浏览器
iPad: u.indexOf(‘iPad‘) > -1, //是否iPad
webApp: u.indexOf(‘Safari‘) == -1 //是否web应该程序，没有头部与底部
};
} (),
language: (navigator.browserLanguage || navigator.language).toLowerCase()
}
if (browser.versions.iPhone || browser.versions.iPad || browser.versions.ios) {
window.location.href = "http://www.jb51.net";
}
if (browser.versions.android) {
window.location.href = "http://www.qq.com";
}
</script>
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
Javascript代码
function is_iPad(){
var ua = navigator.userAgent.toLowerCase();
if(ua.match(/iPad/i)=="ipad") {
return true;
} else {
return false;
}
}
因此，判断ipad,iphone,android的代码为：
<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://m.jb51.net/?ipad";
}
}
if(bIsIphoneOs || bIsAndroid){
var sUrl = location.href;
if(!bForcepc){
window.location.href = "http://m.jb51.net/?iphone";
}
}
if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){
var sUrl = location.href;
if(!bForcepc){
window.location.href = "http://m.jb51.net/";
}
}
}
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>
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原文地址：http://www.cnblogs.com/sunshine-mike/p/5853693.html
