[рони]

Vahan60,

let bd = document.querySelector("body");
if (document.location.href == "index2.html") {
    bd.requestFullscreen();
}
let page = document.querySelectorAll(".lang");
for (let j = 0; j < 4; j++) {
    page[j].addEventListener("click", function() {
        document.location.href = "index2.html"
    })
};