window.onload=function(){ //file upload if(document.body.contains(document.getElementById('showdiv'))){ const z = document.getElementById('showdiv'); const y = document.getElementById('showbutton'); y.addEventListener('click', () => { z.classList.toggle('opendiv'); }); } }
#stammdatendiv.stammdatendiv.opendiv {
display: block;
}
#stammdatendiv.stammdatendiv {
display: none;
}