What could be causing my button to pass the event to its parent element?

I've implemented a clever trick within a div, where I have included my own custom "data" indicating what action to take when the user clicks on it.

My JavaScript code snippet is as follows (with some code omitted for clarity):

$('[data-hqf-switch]').click(function() {
    var t = $(this).attr('data-hqf-switch').split('/'),
        i = 0;
    if (t % 2) {
        alert('Burn the dev. Its the dev. himself who wrote that.');
        return;
    }
    while (i < t.length) {
        var ev = sw(t[i++], '$')+'.'+sw(t[i++], 'd')+';';
        eval(ev);
    }
});

In my HTML file, I have something similar to this:

<div class="col-lg-12" data-hqf-switch="$.pt().pv()/Xd/$.pt()/Xu">
    <h4>25 mars 2016 22:07 - You wrote...</h4>
    <p>J'ai refusé votre invitation</p>
    <button type="button" class="btn btn-default" 
            data-toggle="modal" 
            data-target="#modal-msg-7-24" title="Répondre">
        <i class="fa fa-envelope-o"></i>&nbsp;Répondre
    </button>
    <div class="modal fade" id="modal-msg-7-24" tabindex="-1" 
         role="dialog" 
         aria-labelledby="Envoyer un message" aria-hidden="true" 
         style="display: none;">
        <div class="modal-dialog">
            <div class="modal-content">
            </div>
        </div>
    </div>
    <button class="btn btn-warning" 
            data-hqf-switch="$.pt().pt().pv()/Xd/$.pt().pt()/Xu">
        Fermer
    </button>
</div>                

The primary focus is on the first button: upon clicking it, the modal dialog box appears which is immediately after the button in the code.

All functionalities should work smoothly except that when you click the button, it triggers both the button's event and the surrounding div event simultaneously.

What am I overlooking here?

Answer â„–1

Event propagation refers to the handling of an event for both the clicked element and all its ancestors.

You might find event.stopPropagation() useful.


I strongly believe that relying on your so-called "small trick" may lead to regret in the future, especially if you are working on something complex.

Answer â„–2

If you're looking for the solution, it's right here. It may seem similar to another question, but it's not a duplicate.

My approach involves checking if the element clicked by the user actually contains the necessary data. If it doesn't, I immediately return as I assume (and can't think of a scenario where this isn't true) that it must be one of the children elements, not the parent itself.

$('[data-hqf-switch]').click(function(e) {
    if ($(e.target).filter(':not([data-hqf-switch])').length) {
        return;
    }
    /* The target does have a 'data-hqf-switch' attribute */
    /* ... additional code goes here ...*/
}

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