Bootstrap: Use div as modal only for xs screens? - css

Question

I have a two column Bootstrap layout on small screens and up. For the extra small size class, I'd like to hide the second column from the normal flow, and instead use it as the contents for a modal.
Is that possible in an elegant way (i.e. without moving it around the DOM with Javascript)?
Example:
<div class="row">
<!-- Main Column -->
<div class="col-sm-8 col-md-9">
Main contents blah blah blah
</div>
<!-- Secondary Column -->
<div class="col-sm-4 col-md-3">
Other contents. These appear normally in sm, md, lg. In xs, it should be the contents of a modal.
</div>
</div>
Sample modal (in which the secondary column should be displayed):
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
This is where I want the contents from the secondary column
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>

Answer 1

Yes, you can do that by using jQuery's $.html() function to get the html of the column and then using $.html() again to place it in the modal. This, combined with Abdulla's recommendation, should give you what you want. Here is a demo I created:
$("#myModalBtn").click(function() {
$("#myModal .modal-body").html($("#myModalContent").html());
$("#myModal").modal("show");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<div class="container">
<div class="row">
<!-- Main Column -->
<div class="col-sm-8 col-md-9">
Main contents blah blah blah
<button type="button" class="btn btn-primary visible-xs" id="myModalBtn">Launch demo modal</button>
</div>
<!-- Secondary Column -->
<div class="col-sm-4 col-md-3 hidden-xs" id="myModalContent">
Other contents. These appear normally in sm, md, lg. In xs, it should be the contents of a modal.
</div>
</div>
</div>
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
This is where I want the contents from the secondary column
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
Click on Run Code Snippet then click on the "Full Page" link to see it in action.

Answer 2

Use hidden- property in Bootstrap.
Hidden-xs - Hidden in Extra Small
Hidden-sm - Hidden in Small
Hidden-md - Hidden in Extra Small
etc ..
Check this Responsive utilities