//store form's value in localStorage var f = document.querySelector("form#avatar_form") f.onchange = updateAvatar document.querySelector("#player1").onchange = updateAvatar document.querySelector("#player2").onchange = updateAvatar function updateAvatar () { //console.log("CHANGE"); var fd = new FormData(f); var avatar=fd.get("player_avatar") console.log("avatar", avatar); localStorage.myavatar=avatar; } // store username in local storage + make sure the player added it function storeName(){ var inputPlayer = document.querySelector('#player_name').value; localStorage.playerName=inputPlayer; if( document.querySelector('#player_name').value === '' ){ alert('empty'); } }