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$('#myModal').modal('toggle');
$('#myModal').modal('show');
$('#myModal').modal('hide');
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$(window).on('shown.bs.modal', function() {
$('#code').modal('show');
alert('shown');
});
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<!-- HTML -->
<button id="openModalButton">Open Modal</button>
<div id="myModal" class="modal">
<div class="modal-content">
<span class="close">×</span>
<p>This is the modal content.</p>
</div>
</div>