var s1Btn = document.getElementById("s1Btn"); s1Btn.addEventListener("click", function(){ history.back(); }); var s1Btn02 = document.getElementById("s1Btn02"); s1Btn02.addEventListener("click", function(){ history.forward(); });
function s2Func(){ var s2Text = document.getElementById("s2Text").value; history.go(s2Text); }