Disable body scrolling when modal is open and automatically scroll to the top of the page

I've been experimenting with various methods, but I haven't been successful in getting this to function properly.

After some trial and error, I stumbled upon a technique that effectively stops the body from scrolling when the modal is open:

body.modal-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

While this solution works as intended, a new issue arises - when the modal opens, the body automatically scrolls to the top. This behavior is not desired, and I suspect it is related to the 'position: fixed' property. I attempted using 'relative', but it didn't solve the problem.

Your help is greatly appreciated.

cssbootstrap-4bootstrap-modal

Answer №1

After some trial and error, I finally found a solution. I removed the CSS code that was causing issues and instead used jQuery to add a class to the HTML element. Then, in my CSS file, I styled that class accordingly:

JQUERY:

$(".modal").on('show.bs.modal', function(event) {

    $('html').addClass('no-scroll');

})
$(".modal").on('hide.bs.modal', function(event) {

    $('html').removeClass('no-scroll');

})

CSS:

.no-scroll{
    overflow: hidden;
}

Answer №2

In the case that you are utilizing an anchor (a) tag to launch a modal (or can modify your code to accommodate this), you have the option to easily include javascript:void in order to prevent automatic scrolling to the top of the page. For instance:

<a href="javascript:void(0);" class="open-modal-on-click">Link</a>

Answer №3

If I understand correctly, you can achieve this using Bootstrap by following these steps:

// To prevent scrolling
body.modal-open, .modal-open .modal {
  overflow: hidden;
}

Make sure to also include .modal-dialog-centered within .modal-dialog to center the modal vertically.

You can view an example of this implementation here: https://jsfiddle.net/4938ek6q/

Feel free to resize the result window in the provided example to see if it meets your requirements.

I hope this solution helps guide you in the right direction :)

Answer №4

Here's my approach to solving the problem. It might come in handy for you as well. Firstly, I took out the "#" from the href attribute of the modal button. Next, I included "cursor:pointer" in the button's CSS style. Finally, I assigned a JavaScript onclick event to my button's ID for opening the modal. Now it works like a charm!

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