获取ie版本

function IEVersion() { let userAgent = navigator.userAgent //取得浏览器的userAgent字符串 let isIE = userAgent.indexOf('compatible') > -1 && userAgent.indexOf('MSIE') > -1 //判断是否IE<11浏览器 if (isIE) { let reIE = new RegExp('MSIE (\\d+\\.\\d+);') reIE.test(userAgent) let fIEVersion = parseFloat(RegExp['$1']) switch (fIEVersion) { case 7: return 7 case 8: return 8 case 9: return 9 case 10: return 10 default: return 6 //IE版本<=7 } } let isEdge = userAgent.indexOf('Edge') > -1 && !isIE if (isEdge) { return 'edge' //edge } let isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf('rv:11.0') > -1 if (isIE11) { return 11 } return -1 //不是ie浏览器 }