window.onload = function () { let tes1 = document.getElementById("test1"); tes1.addEventListener("click",function(){ tes1.innerText = "タイトル" }) } window.onload = function () { let tes1 = document.getElementById("test1"); tes1.addEventListener("click",function(){ tes1.innerText = "タイトル" }) } タイマ割り込みを…