JS判斷客戶端是否是iOS或者Android

1 function is_weixin() {
2     var ua = window.navigator.userAgent.toLowerCase();
3     if (ua.match(/MicroMessenger/i) == 'micromessenger') {
4         return true;
5     } else {
6         return false;
7     }
8 }

JS判斷手機作業系統（ios或android）並跳轉到不同下載頁面

 $(function () {
    
 
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終端
    if (isAndroid) {
        window.location.href = 'appDownload.html';
    }
    if (isIOS) {
        window.location.href 
 
= 'iosDownload.html';
    }
});

 js判斷是否電腦端

function IsPC() {
    var userAgentInfo = navigator.userAgent;
    var Agents = ["Android", "iPhone",
        "SymbianOS", "Windows Phone",
        "iPad", "iPod"];
    var flag = true;
    for (var v = 0; v < Agents.length; v++) {
        if (userAgentInfo.indexOf(Agents[v]) > 0) {
            flag 
 
= false;
            break;
        }
    }
    return flag;
}