判断是否来自微信内置浏览器还是不是来自微信内置浏览器

function isWeiXin() {
var ua = window.navigator.userAgent.toLowerCase();
// console.log(ua);//mozilla/5.0 (iphone; cpu iphone os 9_1 like mac os x) applewebkit/601.1.46 (khtml, like gecko)version/9.0 mobile/13b143 safari/601.1
if (ua.match(/MicroMessenger/i) == 'micromessenger') {
return true;
}
else {
return false;
}
}
if(isWeiXin()){
that.Trigger = '是来自微信内置浏览'
}
else{
that.PorjectOut = true 
that.Trigger = '不是来自微信内置浏览器'
// console.log("不是来自微信内置浏览器");}