https://www.tutorialrepublic.com/codelab.php?topic=faq&file=jquery-close-bootstrap-modal
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery Close Bootstrap Modal Window on Button Click</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
<script>
$(document).ready(function(){
// Open modal on page load
$("#myModal").modal('show');
// Close modal on button click
$(".btn").click(function(){
$("#myModal").modal('hide');
});
});
</script>
<style>
.bs-example{
margin: 20px;
}
</style>
</head>
<body>
<div class="bs-example">
<div id="myModal" class="modal fade" tabindex="-1">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Modal Title</h5>
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<p>This is a simple Bootstrap modal. Click the "Close button", "cross icon" or "dark gray area" to close or hide the modal.</p>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary">Close Modal</button>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
