1<!-- Button trigger modal -->
2<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalCenter">
3  Launch demo modal
4</button>
5
6<!-- Modal -->
7<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
8  <div class="modal-dialog modal-dialog-centered" role="document">
9    <div class="modal-content">
10      <div class="modal-header">
11        <h5 class="modal-title" id="exampleModalCenterTitle">Modal title</h5>
12        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
13          <span aria-hidden="true">&times;</span>
14        </button>
15      </div>
16      <div class="modal-body">
17        ...
18      </div>
19      <div class="modal-footer">
20        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
21        <button type="button" class="btn btn-primary">Save changes</button>
22      </div>
23    </div>
24  </div>
25</div>

1$("#myModal").modal()

1<button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">Open Modal</button>
2
3<!-- Modal -->
4<div id="myModal" class="modal fade" role="dialog">
5  <div class="modal-dialog">
6
7    <!-- Modal content-->
8    <div class="modal-content">
9      <div class="modal-header">
10        <button type="button" class="close" data-dismiss="modal">&times;</button>
11        <h4 class="modal-title">Modal Header</h4>
12      </div>
13      <div class="modal-body">
14        <p>Some text in the modal.</p>
15      </div>
16      <div class="modal-footer">
17        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
18      </div>
19    </div>
20
21  </div>
22</div>

1$('#code').on('shown.bs.modal', function (e) {
2  // do something...
3})
4

1<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#modalId">
2  ---
3</button>
4
5<div class="modal fade" id="modalId">
6  <div class="modal-dialog" role="document">
7    <div class="modal-content">
8      <div class="modal-header">
9        <h5 class="modal-title">title</h5>
10		<button type="button" class="close" data-dismiss="modal" aria-label="Close">
11        	<span aria-hidden="true">&times;</span>
12        </button>
13      </div>
14      <div class="modal-body">
15        
16      </div>
17      <div class="modal-footer">
18  		<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
19        <button type="submit" class="btn btn-primary">Save changes</button>
20      </div>
21    </div>
22  </div>
23</div>

1<div class="modal-body">
2  <div class="container-fluid">
3    <div class="row">
4      <div class="col-md-4">.col-md-4</div>
5      <div class="col-md-4 ml-auto">.col-md-4 .ml-auto</div>
6    </div>
7    <div class="row">
8      <div class="col-md-3 ml-auto">.col-md-3 .ml-auto</div>
9      <div class="col-md-2 ml-auto">.col-md-2 .ml-auto</div>
10    </div>
11    <div class="row">
12      <div class="col-md-6 ml-auto">.col-md-6 .ml-auto</div>
13    </div>
14    <div class="row">
15      <div class="col-sm-9">
16        Level 1: .col-sm-9
17        <div class="row">
18          <div class="col-8 col-sm-6">
19            Level 2: .col-8 .col-sm-6
20          </div>
21          <div class="col-4 col-sm-6">
22            Level 2: .col-4 .col-sm-6
23          </div>
24        </div>
25      </div>
26    </div>
27  </div>
28</div>