We can Detect the visitor's browser with the help of Navigator Object In JavaScript.
Ex:
<html>
<body>
<div id="browserdetection"></div>
<script type="text/javascript">
x = "<p>Browser CodeName: " + navigator.appCodeName + "</p>";
x+= "<p>Browser Name: " + navigator.appName + "</p>";
x+= "<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>";
x+= "<p>Browser Version: " + navigator.appVersion + "</p>";
document.getElementById("browserdetection").innerHTML=x;
</script>
</body>
</html>
Output: