onscroll

Does anyone know how to make multiple on scroll fixed headers? I've checked answers such as this . It's kind of what I want, but I want that header to stop before another header and when the first header gets scrolled past the second header should be taking the first header's place and stick at the very top of the screen. But they don't work for me because they're using libraries that I'm not working with(jQuery, etc.) and they are overly, overly complicated. I've tried to do this, I got it to work with getBoundingClientRect() with only 2 headers. I've provided the HTML&CSS part here: html,

I want to postion a DIV inside a page such that it is visible to the user even if the user vertically scrolls the page. The page has a heading at the top of the page which is 75 px tall. Now when the user is at the top of the page and has not scrolled vertically, the DIV must be postioned below the heading. However, once the user scrolls the page causing the heading to go out of sight, the same DIV must now be position at the top of the page (i.e. near the top edge of the browser viewport) My big concern is the support for window.onscroll event on browsers. I checked QuirksMode for

I am facing a little problem here. I have basic knowledge about Javascript and i want to do the following: Right now, when you scroll down, the menu will get smaller. when you go back up, it will return to normal. I call this event with window.onscroll: var diff = 0; function effects(){ var topDistance = (document.documentElement && document.documentElement.scrollTop) || document.body.scrollTop; var clientWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth; var clientHeight = window.innerHeight || document.documentElement.clientHeight || document.body

I'm building a gridview that contains alot of images likely around 1000++ pictures. To reduce the loading time for the gridview, I want to implement an onScrollListener using AbsListView. I will limit 20 images per view, then when scrolling reaches bottom it will load another 20 images. This will repeat until all images has been loaded. I've been googling samples, but doesnt seem to find one that suits my codes. Could anyone please guide me how it is done? I'm currently using imageloader Lazylist for my images. Also I'm using AsyncTask. MainGridView.class public class MainGridView extends

On iOS safari, one-finger panning doesn’t generate any events until the user stops panning. An onscroll event is only generated when the page stops moving and redrawn. I need a way to detect real time scrolling. Specifically, I want to make a sticky menu that will also work on iOS safari. On non-mobile browsers, sticky menu can be done by switching between "position relative" to "position fixed" on the element while listening to the onscroll events. This method won't work on mobile browser because onscroll events are not continuously fired. What can I do? Answering my own question. iOS7 now

I've a ListView displaying some items. I'd like to perform some operation on the items that are currently displayed in the visible portion of the ListView , depending on how the ListView has been scrolled; thus I thought to implements the OnScrollListener of the ListView . Accordingly to the Android api reference, the onScroll method "will be called after the scroll has completed". This seems to me right what I needed, as once the scroll has completed, I perform my actions on the ListView (the onScroll method returns the index of the first item displayed and the number of items displayed). But

So I am trying to use the JavaScript on scroll to call a function. But I wanted to know if I could detect the direction of the the scroll without using jQuery. If not then are there any workarounds? I was thinking of just putting a 'to top' button but would like to avoid that if I could. I have now just tried using this code but it didn't work: if document.body.scrollTop <= 0 { alert ("scrolling down") } else { alert ("scrolling up") } Prateek It can be detected by storing the previous scrollTop value and comparing the current scrollTop value with it. JS : var lastScrollTop = 0; // element