Redirection en fonction du navigateur

<script>

if (!sessionStorage.getItem("redirect")) {

document.addEventListener("DOMContentLoaded", function(){

sessionStorage.setItem("redirect", "on")

let userLang = navigator.language || navigator.userLanguage

userLang = userLang.slice(0,2);switch (userLang) {

case "fr" :

window.location.href = "https://www.monlien.com/";break;case "en" :

window.location.href = "https://www.monlien.com/en";break;case "de" :

window.location.href = "https://www.monlien.com/de";break;}

});}

</script>