const ua = navigator.userAgent.toLowerCase();

const isInWeibo = () => / Weibo /i.test(ua); //微博 ture

const isInWeixin = () => /MicroMessenger/i.test(ua); //微信内置浏览器

const isInQQ = () => /QQ/i.test(ua); //qq内置浏览器

const isAndroid = () => /Android/i.test(ua);

const isDingTalk = () => /DingTalk/i.test(ua);

const isUCBrowser = () => /UCBrowser/i.test(ua);

const isBaidu = () => /Baidu//i.test(ua);

获取浏览类型与系统的函数

// 各主流浏览器

function getBrowser() {

var u = navigator.userAgent;

var bws = [{

name: 'sgssapp',

it: /sogousearch/i.test(u)

}, {

name: 'wechat',

it: /MicroMessenger/i.test(u)

}, {

name: 'weibo',

it: !!u.match(/Weibo/i)

}, {

name: 'uc',

it: !!u.match(/UCBrowser/i) || u.indexOf(' UBrowser') > -1

}, {

name: 'sogou',

it: u.indexOf('MetaSr') > -1 || u.indexOf('Sogou') > -1

}, {

name: 'xiaomi',

it: u.indexOf('MiuiBrowser') > -1

}, {

name: 'baidu',

it: u.indexOf('Baidu') > -1 || u.indexOf('BIDUBrowser') > -1

}, {

name: '360',

it: u.indexOf('360EE') > -1 || u.indexOf('360SE') > -1

}, {

name: '2345',

it: u.indexOf('2345Explorer') > -1

}, {

name: 'edge',

it: u.indexOf('Edge') > -1

}, {

name: 'ie11',

it: u.indexOf('Trident') > -1 && u.indexOf('rv:11.0') > -1

}, {

name: 'ie',

it: u.indexOf('compatible') > -1 && u.indexOf('MSIE') > -1

}, {

name: 'firefox',

it: u.indexOf('Firefox') > -1

}, {

name: 'safari',

it: u.indexOf('Safari') > -1 && u.indexOf('Chrome') === -1

}, {

name: 'qqbrowser',

it: u.indexOf('MQQBrowser') > -1 && u.indexOf(' QQ') === -1

}, {

name: 'qq',

it: u.indexOf('QQ') > -1

}, {

name: 'chrome',

it: u.indexOf('Chrome') > -1 || u.indexOf('CriOS') > -1

}, {

name: 'opera',

it: u.indexOf('Opera') > -1 || u.indexOf('OPR') > -1

}];

for (var i = 0; i < bws.length; i++) {

if (bws[i].it) {

return bws[i].name;

}

}

return 'other';

}

// 系统区分

function getOS() {

var u = navigator.userAgent;

if (!!u.match(/compatible/i) || u.match(/Windows/i)) {

return 'windows';

} else if (!!u.match(/Macintosh/i) || u.match(/MacIntel/i)) {

return 'macOS';

} else if (!!u.match(/iphone/i) || u.match(/Ipad/i)) {

return 'ios';

} else if (!!u.match(/android/i)) {

return 'android';

} else {

return 'other';

}

}

前端H5用js判断页面在IOS，Android，微信，pc端打开的方法

// 判读是否是IOS打开

isIos: function () {

var agent = navigator.userAgent;

var isiOS = !!agent.match(/iPhone|mac|iPod|iPad|ios/i);

return isiOS

},

// 判读是否是android打开

isIos: function () {

var agent = navigator.userAgent;

var isiOS = agent.match(/(Android)\s+([\d.]+)/);

return isiOS

},

判读是否是PC打开

isPc: function () {

var plat = navigator.platform;

var win = plat.indexOf(“Win”) == 0;

var mac = plat.indexOf(“Mac”) == 0;

if (win || mac) {

return true

} else {

return false

}

} ,

判读是否是微信中打开

isWeiXin: function () {

var ua = window.navigator.userAgent.toLowerCase();

if((/MicroMessenger/i).test(ua)){

return true;

}else{

return false;

}

},

js判断H5页面是否是在QQ\UC浏览器中打开

//js判断H5页面是否是在QQ\UC浏览器中打开

var u = navigator.appVersion;

var uc = u.split('UCBrowser/').length > 1 ? 1 : 0;

var qq = u.split('MQQBrowser/').length > 1 ? 2 : 0;

var wx = ((u.match(/MicroMessenger/i)) && (u.match(/MicroMessenger/i).toString().toLowerCase() == 'micromessenger'));

//注意判断是QQ浏览器还需排除微信打开环境，即：

if(qq && !wx){

return 1;

}else{

return 0;

}

//判断是否是UC浏览器打开

if(uc){

return 1;

}else{

return 0;

}

应用场景：

调用浏览器自带分享功能实现第三方分享