This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Stopping fixed position scrolling at a certain point?
After I scroll past a certain point I need an element (side bar of links) to not scroll anymore, but yet just stay where it is. I have tried setting this element to fixed after the certain point and this works fine other than it snaps the side bar links down into view in the window in the same position they were before i started scrolling and then fixes them to the window where they do not scroll anymore. I would like to not see this instead once i scroll past the certain point just leave the element where it is on the page, but do not allow it to be scrolled anymore (therefore my side bar of links will be slightly scrolled up off the page, but the bottom links still showing) . triggering the event of setting the element to fixed or not fixed is not my problem that works fine. I just need to position the element AFTER setting it to fixed so that i can put it back up where it started, or find and alternate to setting the position to fixed after I scroll past this certain point.
again desired behavior is that once i scroll down so far on my page, my side bar of links just stay where they are (partly scrolled down, which means the top part is off the page) and then as i continue to scroll down they do not move.
most likely i am thinking i need to reposition the links after the position is being changed to fixed.
ANY HELP? THANKS!
yes. There is a nifty little jquery plugin that handles this: https://github.com/bigspotteddog/ScrollToFixed
or you can reference this previous post dealing with the same subject matter: Stopping fixed position scrolling at a certain point?
Related
I am trying to achieve an effect similar to on this website here: https://www.wokine.com/en/ where you scroll down and the 'HELLO' text moves to the side. I have done that part, but I am stuck on how to pause the page from scrolling after that but still, keep the scrollbar moving. I need this to happen so I can use jquery to re-enable scrolling after the user scrolls down to a certain point.
The link explains it a bit better than I can with words.
Page scrolling is never paused or disabled is just a "trick"
Let the 'HELLO' element be fixed positioned until scrolling reach the point where you want the element to start moving up.
During the first stage ('HELLO' fixed) you can detect page scrolling and perform animation on the element.
Second stage, when you want 'HELLO' start scrolling, switch its positioning to absolute (or relative) and at the same time set its vertical position top at the same coordinate the page has been scrolled to (window.scrollY)
I am designing an interactive web game that takes place entirely in the browser. It uses html5, and everything (including the elements) is part of the game world. Since this is the case, I need some pretty strict control over the positioning of my elements, scroll position, zooming, etc.
One particular level requires that an element be placed off screen (just outside the viewport) so that the user must scroll the page to find it. Unfortunately, after scrolling, the page seems to record the new width of the page including the originally unseen element. When the page is refreshed, the zoom level is adjusted to fit the entire screen with the hidden element into the viewport. This gives away the puzzle and ruins the level.
I know that browsers store information like scroll position so that when a user revisits the page they can pick up right where they left off. This is great for some things, but bad for my purposes. Is there a way to prevent this caching behavior of my browsers? Is there a way to get or set the zoom level of a page using JavaScript?
Currently I am using the code below to reset the scroll position right before the user leaves the page. It works pretty well, but the user can see the page scroll right before leaving.
window.addEventListener("beforeunload",function(event_){
window.scrollTo(0,0);
/* What I would love is if there were a way to do this: */
// window.zoomTo(1.0);
/* But I'm sure that's asking for too much. */
});
I managed to fix my problem by keeping the hidden element out of the html flow all together by setting its css position property to fixed. I simulate page scrolling by changing the elements style.left value with some custom touch event handlers. The page has no need to resize or zoom with the addition of the off screen element because fixed position elements do not effect layout.
This doesn't answer my question about resetting the zoom level, however, and I would still appreciate any insight anyone may have.
I'm trying to find the best technique for showing a navigation/menu for a mobile site I'm working on. So far all my solutions have flaws, and I was wondering if anyone could point me in the right direction. (You may have to reduce browser window size to make the examples work as intended)
First off, take a look at this "basic" example: http://audunaas.no/menu/problem.html
You'll notice the content is still scrollable while the navigation is open. This is confusing and annoying.
My first attempt at a fix was to set the body to overflow:hidden and position:fixed whenever the navigation is open. Example here: (Had to remove link because maximum 2 links in post)
This, however, causes the body to snap back to the top and "forget" its scroll position. This means you are taken back to the top of the page whenever you open the navigation. Not good.
Lastly, my best solution so far is one where i put all the page content inside a #scroll-area-div with a fixed position taking up most of the screen, and body scroll set to hidden. Example here: http://audunaas.no/menu/
This solves most of the problems in the page itself, but breaks the "memory" of the back button. This means whenever you click back in your browser you are taken to the top of the page instead of back to where you were before you decided to click a link. (Mobile safari seems to be the only browser that remembers scroll position on div's aswell as body)
I can't really think of any more solutions to this, except for maybe some sort of javascript. Does anyone have some experience with similar cases, or any ideas on how to accomplish this?
The solution must:
Prevent scrolling on page content when navigation is open
Preserve scroll position on page content when navigation is open
Remember scroll position on previous page when back-button is used
I have a dynamic page where clicking a link triggers some javascript that sets some page elements to display:none, and thus changes the height of the page. The typical browser behavior for this is that the scroll position from the top of the page is retained. I want to retain the scroll position from the bottom instead, because the link is near the bottom of the page and I would like the user's cursor to remain over the link after it is clicked.
The code I have to do this is:
var scrollBottom=getDocHeight()-getScrollTop();
//do stuff to change height
window.scrollTo(0,getDocHeight()-scrollBottom);
(using cross-browser functions I found to obtain document height and scroll position).
This works fine in chrome and internet explorer, but in firefox, there is a small delay between the page height changing and the scroll position changing. As a result there is a flicker as the page quickly realigns itself, which is bothering me a great deal.
Can anyone suggest a fix or a more natural way to remember the scroll position from the bottom of the page instead of the top?
Thank you.
Ok, so I've created a little plugin that takes a bunch of elements and creates a sort of never ending list. I'll try to explain...
I have a div, and it's got about 20 elements tags in it. When the user scrolls up, the top element moves out of view and is moved to the bottom of the list. And vice-versa so that when the user scrolls down, the bottom element is moved to the top of the list.
This is specifically for Mobile Safari (iPad, iPhone) web content
What I would like to do is implement inertia so the scrolling slows to a halt in response to how fast or slow the user is scrolling when their finger leaves the screen. Just like the inertia commonly found in the iPhone / iPad UI.
The problem is, every time an element moves to the top or the bottom of the list, the scollTop value for the parent div is adjusted to make it look like all the elements are staying in the same place. Which means the scrollTop value is never more than the top elements total height. So there's no value I can think of that I can keep on manipulating to give the illusion of inertia.
I'm stumped. Does anyone have any suggestions?
iScroll implements scrolling with inertia, but I'm not sure how it would react to you adding and removing elements mid-scroll. Might be worth looking into though.