how to remove a modal from screen code example
Example: disable close from screen modal popup
<!-- opening with html, the key is the data-backdrop="static" attribute -->
<button data-target="#myModal" data-toggle="modal" data-backdrop="static" data-keyboard="false">
Launch demo modal
</button>
<script>
//Opening with JS:
$('#myModal').modal({backdrop: 'static', keyboard: false})
</script>