onclick show div and hide other div
<div id="div1">A DIV element...</div>
<div id="div2">Another DIV element</div>
<div id="div3" hidden>A hidden DIV element</div>
<button onclick="switchHidden()">Click to hide visible DIVs and show hidden ones</button>
<script type="text/javascript">
function switchHidden() {
document.getElementById("div1").hidden = !document.getElementById("div1").hidden;
document.getElementById("div2").hidden = !document.getElementById("div2").hidden;
document.getElementById("div3").hidden = !document.getElementById("div3").hidden;
// alternatively you could do something like Array.prototype.forEach.call(document.getElementsByTagName("div"), div => div.hidden = !div.hidden);
}
</script>