I need to disable the bouncy page-level scroll for iOS while preserving the ability to scroll inside a div. The solution to the most popular StackOverflow question on the matter seemed to work for me at first, but I found that with certain positions/transforms, the solution would break.
If I disable -webkit-overflow-scrolling, it works fine, but the user experience without it is greatly diminished in my opinion.
I am using THREE.js's CSS3DRenderer to do the positioning because in the project this is for, I need to composite the dom element on top of a 3D scene and have the cameras match. But essentially, its just adjusting the transforms and nothing more.
I created a CodePen that shows clearly that camera/object position consistently scrolls while blocking page scrolling and another breaks it.
http://codepen.io/aaronmeyers/pen/LKgsG/
please see codepen
Related
Hi everyone,
I'm working on a side navigation menu for my churches website. You can see the demo here:
http://amightywind.com/sideNav/
However I have a problem. The navigation is supposed to work so when you scroll down the page past it's bottom the css changes to make it anchor and stop moving.
The problem is that the "anchoring" effect doesn't always work smoothly and will only be applied after you scrolled a few pixels past the bottom.
This causes the side bar to "jump" back into it's designed place.
I know this problem is probably caused by asynchronous panning (the browser delays repainting when scrolling to keep a smooth frame rate).
I was going to call this unsolvable, but then I saw firefox's quantum browser page.
If you scroll down halfway, you will see a large pink box on the left that says "Firefox Quantum features".
The text changes positioning when you scroll into it similarly to how my side bar works. However 2 things are different.
1 there is no jump. It is perfectly smooth in every browser I tested.
I figured this could easily be because they are moving a smaller portion of content than I am, but....
2 when I inspect element I notice there is no css class/style change on the object when scrolled into it.
How is this possible? Is there a way to make this effect work without Javascript? Or at least more smoothly than I've done just listening to the window scroll event?
Any help would be much appreciated thank you!
I've been trying to do something like this for quite a bit, and have tried a variety of methods from fake scroll bars and DOM-tricking code. Nothing seems to quite be as clean / functioning as I need it to be.
What I'm trying to do is have a horizontally scrolling div (with scrollbar), with a vertically scrolling div nested within it. Ideally the single horizontal scrollbar would scroll, and after a certain point--vertically scroll the "go-up" div next to it.
Here's an example diagram for those who need to visualize:
I think I have a solution that could work:
Basically I'm thinking that the horizontal "scene" could have overflow that equals the height of the "go-up" div. And after the horizontal width of the "scene" passes...you can, onScroll, shift the "go-up" container right using (ScrollLeft) and up using (ScrollTop).
Basically giving you the illusion of controlling it's vertical scroll with a horizontal scrollbar.
Check out the code here: http://jsfiddle.net/jPzqj/1/
I know how to pass a function at the end of the "scene"...currently I'm using:
$('#main').scroll(function(e)
{
if($(this).scrollLeft()>1430)
{
}
});
My only issue is I'm not quite sure how to approach the math that would allow me to shift the go-up container. How do I pass in the "scene" divs scroll value into the ScrollLeft and ScrollTop values of "go-up"...
Could anyone give me any advice on this at all?
Thanks.
You are totally off the right path, no vertical scrollbars are involved.
That is a good site (not the one that you make in 30 minute obviously), and the javascript is obfuscated, but if you are interested, you could watch the source with Firebug to understand what's going on.
It works by mixing a javascript library, some cool CSS3 Transform3D effects, and a nicely studied HTML to give you the effect of the screen scrolling up (actually, only the images are moving - and not scrolling - while the screen is always in the same Y position).
The same effect is used to create the percetion of depth, by moving the houses in background slower than the ones in front.
This effect is called PARALLAX SCROLLING .
A good javascript library you could start looking at for Parallax effects is Stellar.js
You can take a look at some great sites made with Stellar.js, especially Nike and Saucony.
Hope this answer saved you some time,
good luck on your studies ;)
EDIT
this is what you want: Jquery Parallax Scrolling effect - Multi directional
open the fiddle from the bounty-awarded answer and keep the right arrow key down.
The Problem:
I have a web application on the iOS homescreen so there is no browser window and it looks and functions very well. I've figured out how to make inner div elements do the touch scrolling events and use the momentum/bounce style in iOS, and that works perfectly... the issue I run into now is that the bounce scrolling (again, iOS-only) is messing up any fixed elements or site-related animations I have on the page.
When I try the following:
document.ontouchmove = function(e) {e.preventDefault()};
The issue stops, but now I can't scroll anywhere on my application.
What I Need:
I want the body to be completely locked in place... If someone grabs, say, my sidebar or navbar and then pulls on the page, the body bounces! But if someone is inside the content area, there is no issue at all--the application scrolls flawlessly and looks great. If I stop scrolling on the sidebar or navbar or body, all scrolling in the application will not working and is essentially nonfunctional.
tl;dr: Body bounces on scroll. I want a scrolling content area and no scroll anywhere else. The body should NEVER move, but elements I deem scrollable within the body should.
As a sidenote, I've browser the following popular questions/solutions posted (among many others):
1
2
3
I just wanted to post that up before people assumed I didn't do any searching... I've been at this for hours now and have seen even more solutions than posted above, but I wanted to get the most popular ones listed above so no one thought this was a duplicate question.
I figured this out a few days ago and have this handy jsbin set up to demonstrate what I did to make this work:
My Working jsbin Example
When you open this link on an iPad, the text should be scrollable. Try tugging around the rest of the screen when there is no current touchmove event currently working.
If you play around with it, you'll notice that only the inner textfield moves as expected. This is determined by putting my .scrollable class within the .container class. The .scrollable class takes up the full height of it's parent container.
Now make the container a larger height, like height: 500px. The goal here is to make it large enough to have no overflow yet small enough to have other whitespace on the iPad still. Try scrolling it or pulling it... No touchmove events are fired and the screen stays in place.
My JS determines if an object has overflow after being touched. If it does, it scrolls. If it does not, it does not send a scroll event.
Play with it and let me know if I can provide any better examples and also if you run into any bugs... Right now the only one I know of is if you're really trying to break it and start tugging around the site while a current touchmove event is being fired, or the page is first loading... I wouldn't count those as "bugs", but if you can find a fix for those too, I'm all ears!
I've seen one or two sites lately that take over the default scrolling in browsers.
When scrolling down, it will animate a scroll down to the next content section (stopping any scroll events during the animation.
When scrolling up, the same thing happens, but to the previous section.
The site I currently have is here: http://cirkut.net/sub/proven/parallax/
I've got the parallax down, but I can't think of an easy way to takeover the scroll and animate this. I'm fairly certain there must be a js/jQuery plugin to do this (I'm currently using stellar.js).
I've been searching for hours to find the example of what I want, but I can't find anything. If I find one, I'll come back and edit this.
Thanks for any leads or help!
Would anybody be able to make an "in-div" (as opposed to "in-body") version of the following web page?
http://squareoftwo.com/
In other words, I want this functionality as a part of a bigger web page, with a frame around the rotator, white space left and right from the frame and possibly other information above and beneath the frame.
The page should have a vertical scrollbar and the frame -and the words in it- should respond (reposition) upon moving that scrollbar.
Any (part of) words crossing the frame border should be invisible.
If the mouse is not positioned in the frame, the words should not rotate.
I have tried several things, but I always completely mess up the result (I'm far from a javascript expert).
Any help is welcome.
Thanks in advance
The following blog post seems to provide a very good answer:
http://www.gabrielpillet.com/en/blog/2/2010/08/22/creating-a-3d-cloud-tag-with-jquery-jquery-accessibility-php-seo-development-css