html form inside bootstrap popover not working

Question

I\'m trying to use a form inside a bootstrap popover. Some basic html works (text styling, buttons), but the form does not. (neither do onclick() javascript actions)

Answer 1

You can use content callback. In any case you need to insert your html into an hidden element, not into the button:

$('[data-toggle="popover"]').popover({
    html: true,
    content: function () {
        var content = $(this).attr("data-popover-content");
        return $(content).find(".popover-body").clone();
    }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>


<button type="button" class="btn btn-lg btn-danger" data-toggle="popover" data-html='true'
        data-popover-content="#yourContentHere">popover with html form
</button>

<div id="yourContentHere" style="display:none;">
    <div class="popover-body">
        <h3>This works</h3>

        <form>
            This does not:<br>
            <input type='text' name='firstname'><br>
            Last name:<br>
            <input type='text' name='lastname'>
        </form>
    </div>
</div>

Answer 2

Your HTML is just fine and works (see example below.) The issue is a new flag needs to be set to allow HTML in the popover for BS 4.3.1

Per their release notes for that version is a breaking change:

"Security: Fixed an XSS vulnerability (CVE-2019-8331) in our tooltip and popover plugins by implementing a new HTML sanitizer"

See implementation of sanitize below in your example:

$(function() {
  $('[data-toggle="popover"]').popover({
    html: true,
sanitize: false,
  })
})

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>

<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>




<button style="margin: 20px;" type="button" class="btn btn-lg btn-danger" data-toggle="popover" data-html='true' data-content="
    <h3>This works</h3>
    <form>
    This does too:<br>
    <input type='text' name='firstname'><br>
    Last name:<br>
    <input type='text' name='lastname'>
    </form>
    ">popover with html form</button>


<button style="margin: 20px;" type="button" class="btn btn-lg btn-info" data-toggle="popover" data-html='true' data-content="
    <h3>This works</h3>
    <form>
    This does duece:<br>
    <input type='text' name='firstname'><br>
    Last name:<br>
    <input type='text' name='lastname'>
    </form>
    ">Duece</button>

Answer 3

If nothing works, try this

$('#'+$(this).attr('aria-describedby')).find('.popover-body').html(myhtml);