jquery error : $(...).modal is not a function

 source: https://stackoverflow.com/questions/25757968/bootstrap-modal-is-not-a-function

check the forth answer.

solution:

jQuery.noConflict();
$('#id-mdl').modal('show');

scrollbar Bootstrap Modal

The real tittle is actually "how to make second shown Modal scrollbar". I have two modal on one page. The second modal should be shown as the result of ajax response sent in the first modal, so the first modal will be hidden and followed by showing the second modal. The second modal has a length, that it needs to be scrolled up and down. The problem was the scrollbar does not work for that modal, instead the scrollbar was functionable for the parent page.

So here is the solution:

 

<div class="modal fade" id="myModal"  role="dialog" aria-hidden="true" style="overflow-y: initial !important">
    <div class="modal-xl modal-dialog modal-dialog-centered" role="document">
        <div class="modal-content">
            <div class="modal-header">
                ...
            </div>
            <div class="modal-body" >
                ... 
            </div>

        </div>
    </div>
</div>

Take a look at style="overflow-y: initial !important". This is the solution.

Select2 problem in Bootstrap Modal

Its a common problem implementing select2 in Bootstrap Modal. Mostly you will face problem that either the dropdown menu shown behind the modal or the livesearch doesn't work.

I found the solution after I browsed around, unfortunately I forgot the source where I found this solution. What I remembered, blurly, I found it in Github.

So, if my HTML Bootstrap Modal looks like this:

 
<div class="modal fade" id="myModal"  role="dialog" aria-hidden="true">
    <div class="modal-xl modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                ...
            </div>
            <div class="modal-body" >
                <div class="form-group">
                    <label for="idMySelect">SELECT</label>
                    <select id="idMySelect" class="form-control basic">
                        <option value="one">option one</option>
                        <option value="two">option two</option>
                        <option value="three">option three</option>
                        ...
                    </select>
                </div> 
            </div>

        </div>
    </div>
</div>

the JS for select2 in that modal would be:

 
$("#idMySelect").select2({
     tags: true,
     dropdownParent: $('#myModal')
});

We should set each select2 separately, if we have more than one select2 and especially if those select2 are in different modal (if we use more modals in one page) or some are on the parent page.