I am trying to prevent my page from moving when i open a modal which is caused from the scrollbar. Originally the page would keep moving several pixels to the left and not move back each time i opened a new modal. I had to apply this css to solve that problem:
padding-right:0px !important;
margin-right:0px !important;
But now even though the page shifts back, when either the login modal or register modal is open and you press 'Sign up here', or 'Sign in here' from the loginmodal or registermodal, the scrollbar hides and then reappears which shifts the page before moving back to its original position. I experimented briefly and added overflow:scroll to the element, i didn't like the idea of the two scroll bars when the page is below a certain resolution.
So my question is:
How do i stop the scrollbar from hiding and reappearing when opening a modal when another model is already open which causes the page to shift left then back to its original position.
Here is my JSFiddle:
https://jsfiddle.net/w07dx8jk/
EDIT:
Would it be possible to have a blank scrollbar visible when a modal is open to stop it from disappearing which causes the shifting or is there a better method?
Usually, you simply leave the scrollbar visible, so it won't flicker:
html {overflow-y: scroll;}
You need to apply overflow-y: scroll !important to body to prevent the page move, !important is required because Bootstrap applies some of its own CSS to body and you need to override them.
And then apply overflow: hidden to .modal to prevent the double scrollbars.
Demo: https://jsfiddle.net/alan0xd7/w07dx8jk/1/
Related
Here is what I am trying to do: When the user is clicking a button, a transparent overlay is opening. The background shouldn't be scrollable but stay at the scroll position. So what I am doing at the moment is that once the button is clicked, I safe the current scroll position via window.scrollY, then add overflow: hidden to both the html and body tag (which unfortunately scrolls the page to the very top), then proceed to scroll to the saved position inside the main div of the website. In most browsers these steps aren't noticeable so it seems like everything just stays at the same position. In Safari however, you can see that for a few ms the background scrolls to the very top and then back again.
So what I would like to know is how to execute multiple methods at once before the DOM updates. Or maybe you can think of another way of doing this?
Thank you!
I have a mobile web map application within an overflow: hidden body. There is a map legend which is partially hidden on the right side of the body and a menu which is partially hidden on the bottom of the body.
The idea is to click on the partially visible part of the control and have the control slide into view.
The bottom menu is higher than the body and should therefore be scrollable in the y direction.
The problem is that I can either prevent scrolling by preventing the default on the touchmove event handler or that I enable the scrolling which means that clicking on the menu allows to move the whole body of the application all over the shop.
The application can be accessed here https://geolytix.net/mobilemap
I use Google Chrome dev tools responsive view to test the touch scroll behaviour.
I disable the scrolling on the legend item but I cannot disable the scrolling on the large menu slider on the bottom.
What I am trying to prevent is that the user just pushes the menu off the screen like so:
One way would be to add to your css
html, body {position: fixed;}
to prevent the possibility of scrolling.
Now, to make your Menu scrollable you add to your css the following lines
#sliderPanel {height: 100%;overflow-y: scroll;}
You can now scroll the Menu on the y-Axis.
I am using a fixed overlay div on my page to show additional content when the user clicks on a certain button.
The trouble with this is that on iOS, the content behind tends to scroll rather than the overlay div.
The only effective solution I have found to this is to use jQuery to alter the class of and toggle its position to fixed (and overflow: hidden) whenever the overlay div is selected to appear (and then back again on closing the overlay). E.g.
$(document).ready(function(){
$("#filter-btn, .close-filter").click(function(){
$("body").toggleClass("fix");
});
});
Whilst this works, it also causes the content within the body itself to move up to the top of the page when changing to 'fixed' to the top which is monentarily visible whilst the fixed overlay div fades in.
Is there anyway I can prevent this from happening?
This can generally be solved by setting body height to 100% and overflow:hidden within the css rule for class applied to the body
I'm using full-screen modals on my site on mobile. The problem is that touching the modal will cause the body page to move even though it's overflow:hidden;
Here's what bootstrap says about that:
Support for overflow: hidden on the element is quite limited in
iOS and Android. To that end, when you scroll past the top or bottom
of a modal in either of those devices' browsers, the content
will begin to scroll.
What can I do to prevent that?
Setting the body to position:fixed causes the scroll to jump to the top in an ugly way. What's the best solution if anyone came up with one?
I had the same question myself before.
What I did is changed the body to overflow:hidden and fixed height equal to modal height and remembered document scroll position. After closing the modal, I've applied remembered scroll position back and height to auto.
It is so complicated because I needed my modals to be bigger than window and I wanted to be able to scroll the modal.
I'm developing modal windows with the ability of being scrollable, like pinterest ones. When they are fired define overflow: hidden on body and overflow: auto on the modal box container. This works very well on desktop browsers but my first test on iPad (and I assume that probably on iOS in general) reveals a problem:
When the scrolling of the modal ends, if the document is longer than the modal the scrolling continues.
I tried this with the intention of only accept scrolling if it is triggered by the modal or its container:
// Disable browser scrolling on iOS
$(document).on('touchmove',function(e) {
if (($(e.target).attr('id') != id) &&
($(e.target).attr('id') != ('modal-'+id))) {
e.preventDefault();
}
});
And it really works doing strictly that. The modal scrolls and when it ends scrolling the page is possible only if you scroll inside the modal.
Do you have any idea?
Try it in your ipads if you want (you have to click on the modal button): http://www.onebigrobot.com/beta/altair/transforms-so
Thank you in advance!
Small changes are powerful!
All the problem is solved changing position: absolute by position: fixed on the modal container (and also on the dark mask of the background if needed). In fact with absolute positioning the modal only worked because the button was at the top of the page.
With fixed positioning desktop browsers works perfectly, and on the ipad something interesting occurs. When the scroll of the modal ends the scroll of the page begins to work but with the modal always on top well positioned.
I hope this question could be useful for someone.