$(function () {
            var u = navigator.userAgent,
                app = navigator.appVersion;
            var ua = navigator.userAgent.toLowerCase();
            var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios
            var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android

            if (ua.match(/MicroMessenger/i) == "micromessenger") {
                // alert(1)
                $('#JweixinTip').show();
                document.getElementById('JweixinTip').style.display = 'block';
            }

        });