"Challenges arise when attempting to use JavaScript with elements contained within a

Question

"Challenges arise when attempting to use JavaScript with elements contained within a

Looking for some assistance.

I successfully created a modal using Bootstrap 3 that includes a small form allowing administrators/users to change a user's password.

However, when attempting to replicate this with Bootstrap 4, I am facing challenges in executing JavaScript from anchors or buttons within the modal.

Can anyone provide guidance on how to resolve this issue?

Here is an example of code that is not functioning as intended:

$('.classFromElement').on('click', function (e) {
    e.preventDefault();

    alert('hello world');
});

javascript bootstrap-4

Answer 1

Answer №1

The modal appears to be an html element that is dynamically added. This means it is not initially included in the DOM. To ensure event handling for new elements, you can use event delegation with "document" or "html, body" after the window has loaded. Personally, I find using "document" more reliable as there were instances where even the html or body element was not fully rendered and it also offers better performance.

The most optimal choice for both functionality and performance would be:

$(document).on('click','.classFromElement', function(e) {
    e.preventDefault();

    alert('hello world');
});

Alternatively, you could use 'body, html' (combining both for broader browser support):

$('body, html').on('click','.classFromElement', function(e) {
    e.preventDefault();

    alert('hello world');
});

Answer 2

The modal appears to be an html element that is dynamically added. This means it is not initially included in the DOM. To ensure event handling for new elements, you can use event delegation with "document" or "html, body" after the window has loaded. Personally, I find using "document" more reliable as there were instances where even the html or body element was not fully rendered and it also offers better performance.

The most optimal choice for both functionality and performance would be:

$(document).on('click','.classFromElement', function(e) {
    e.preventDefault();

    alert('hello world');
});

Alternatively, you could use 'body, html' (combining both for broader browser support):

$('body, html').on('click','.classFromElement', function(e) {
    e.preventDefault();

    alert('hello world');
});

Answer 3

Answer №2

In the past, I attempted this method and found it to be quite effective.

Essentially, you initiate the modal window and then assign an event to your button.

$('#myModal').on('show.bs.modal', function () {
    $('.classFromElement').on('click', function (e) {
        e.preventDefault();
        alert('hello world');
    });
})

Answer 4

In the past, I attempted this method and found it to be quite effective.

Essentially, you initiate the modal window and then assign an event to your button.

$('#myModal').on('show.bs.modal', function () {
    $('.classFromElement').on('click', function (e) {
        e.preventDefault();
        alert('hello world');
    });
})

Answer 5

Answer №3

Apologies, I have identified my mistake.

I mistakenly placed the modals before the scripts. This has now been rectified.

:(

Answer 6

Apologies, I have identified my mistake.

I mistakenly placed the modals before the scripts. This has now been rectified.

:(

"Challenges arise when attempting to use JavaScript with elements contained within a

Answer №1

Answer №2

Answer №3

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