JSFiddle - React, Tailwind, and code Playground

by paffffff

HTML

У вас: <span id="ieversion"></span>

CSS

body {
    margin: 20px 50px;
    font-family: Tahoma, sans-serif;
}
#ieversion {
    color: red;
}

JavaScript

//Internet Explorer
if (navigator.appName == "Microsoft Internet Explorer") {
    //Set IE as true
    ie = true;
    //Create a user agent var
    var ua = navigator.userAgent;
    //Write a new regEx to find the version number
    var re = new RegExp("MSIE ([0-9]{1,}[.0-9]{0,})");
    //If the regEx through the userAgent is not null
    if (re.exec(ua) != null) {
        //Set the IE version
        ieVersion = parseInt(RegExp.$1);
    }
}
else {
    ie = false;
}

if (ie) {
    $('#ieversion').text('IE'+ieVersion);
} else {
    $('#ieversion').text('Нормальный браузер');
}