onclick display block and none javascript code example
Example 1: javascript hide div
// javascript
<script>
document.getElementById("id").style.display = "none";
document.getElementById("id").style.display = "block";
document.getElementById("id").style.display = "";
</script>
// html
<html>
<div id="id" style="display:none">
<div id="id" style="display:block">
</html>
// jquery
<script>
$("#id").hide();
$("#id").show();
</script>
Example 2: how to make a div appear onclick
function showDiv() {
document.getElementById('sign-in').style.display = "block";
}