bootstrap 4 close modal outside code example

Example 1: prevent bootstrap modal from closing when clicking outside

<div id="idModal" class="modal hide" data-backdrop="static" data-keyboard="false">

Example 2: bootstrap modal popup backdrop false

<button class='btn btn-danger fa fa-trash' data-toggle='modal' data-target='#deleteModal' data-backdrop='static' data-keyboard='false'></button>