js获取userAgent中操作系统版本

var Agents = new Array("Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod");var flag = true;/** * 初始化加载程序 */window.onload = function(){ console.log(isMobile()); console.log(isWechat()); console.log(getOsVersion());}/** * 判断是不是移动端 * @returns {boolean} */function isMobile() { var userAgentInfo = navigator.userAgent; for (var v = 0; v < Agents.length; v++) { if (userAgentInfo.indexOf(Agents[v]) > 0) { flag = false; break; } } return flag;}/** * 判断是不是微信浏览器 * @returns {boolean} */function isWechat() { var ua = navigator.userAgent.toLowerCase(); if(ua.match(/MicroMessenger/i)=="micromessenger") return true; else return false;}/** * 判断浏览器所在机器操作系统版本 */function getOsVersion(){ var u = navigator.userAgent,version = ''; if (u.indexOf('Mac OS X') > -1) { //ios var regStr_saf = /OS [\d._]*/gi; var verinfo = u.match(regStr_saf); version = (verinfo + "").replace(/[^0-9|_.]/ig,'').replace(/_/ig,'.'); } else if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) { //android version = u.substr(u.indexOf('Android') + 8, u.indexOf(";", u.indexOf("Android")) - u.indexOf('Android') - 8); } else if (u.indexOf('BB10') > -1) { //黑莓bb10系统 version = u.substr(u.indexOf('BB10') + 5, u.indexOf(";", u.indexOf("BB10")) - u.indexOf('BB10') - 5); } else if (u.indexOf('IEMobile')) { //windows phone version = u.substr(u.indexOf('IEMobile') + 9, u.indexOf(";", u.indexOf("IEMobile")) - u.indexOf('IEMobile') - 9); } return version;}