balm-ui
Version:
A modular and customizable UI library based on Material Design and Vue 3
53 lines (41 loc) • 1.49 kB
JavaScript
/**
* detect IE
* returns version of IE or false, if browser is not Internet Explorer
*/
const detectIE = () => {
const ua = window.navigator.userAgent;
// Test values; Uncomment to check result …
// IE 10
// ua = 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)';
// IE 11
// ua = 'Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko';
// Edge 12 (Spartan)
// ua = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36 Edge/12.0';
// Edge 13
// ua = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586';
// NOTE: 2014
// const msie = ua.indexOf('MSIE ');
// if (msie > 0) {
// // IE 10 or older => return version number
// return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10);
// }
// const trident = ua.indexOf('Trident/');
// if (trident > 0) {
// // IE 11 => return version number
// const rv = ua.indexOf('rv:');
// return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10);
// }
// NOTE: 2019
const ie = /\b(MSIE |Trident.*?rv:)(\d+)/.exec(ua);
if (ie) {
return parseInt(ie[2], 10);
}
const edge = ua.indexOf('Edge/');
if (edge > 0) {
// Edge (IE 12+) => return version number
return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10);
}
// Other browser
return false;
};
export default detectIE;