js判断是Android还是IOS

通过js来判断是Android还是ios，从而让不同手机的用户跳转至不同的下载地址

<script type="text/javascript">
	var u = navigator.userAgent, app = navigator.appVersion;
    var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Linux') > -1; //g
    var isIOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
    if (isAndroid) {
        console.log('and');
//        alert('安卓调转');
//        window.location.herf = 'http://www.baidu.com';
        location.href = 'http://android.myapp.com/myapp/detail.htm?apkName=com.ykhy.www.ykhy&ADTAG=mobile';
    }
    if (isIOS) {
        console.log('ios');
//        alert('IOS跳转');
        location.href = 'https://itunes.apple.com/cn/app/%E4%B8%80%E5%8F%A3%E5%A5%BD%E7%89%99/id1390425278?mt=8';
    }
</script>