JavaScript判断当前设备，pc-安卓-ios

<script >

    window.onload = function(){

        var isPc = IsPC();
        var isAndroid = is_android();
        if (isPc){
            //pc
            // location.href = url;
            alert('当前设备：pc')
        }else{
            if (isAndroid){
                //安卓
                // location.href = "";
                alert('当前设备：安卓')
            }else{
                //IOS
                // location.href = "";
                alert('当前设备：ios')

            }
        }


    };



    //如果返回的是false说明当前操作系统是手机端，如果返回的是true则说明当前的操作系统是电脑端
    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;
    }

    //如果返回true 则说明是Android  false是ios
    function is_android() {
        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) {
            //这个是安卓操作系统
            return true;
        }
        if (isIOS) {
            //这个是ios操作系统
            return false;
        }
    }


</script>