Trigger actions on scroll to a point
This module is based on img-src-ondemand, the other module that I wrote some time ago to delay image loading to only when they appear on screen. Recently, I wanted to write a new infinite scroll library to replace the use of ngInfiniteScroll which I don't like so much. Reason being it requires you to pass a selector or a selector function as setup so the service can find the infinite scroll container. This doesn't work well if the container is somewhere in a route view. The container should be able to reach the service, so that doesn't matter where it's put, it can work. After some thought, I realized that the logic it requires here is already written in my previous library. Now, I extracted the logic and generalized it, so it can be used in a much wider range.
Some demos. Scroll down slowly.
How to use can be found in tests
The tests are both tests and examples
See reference is at the end
| Example / Test name | Functionality |
|---|---|
| test_img_src_ondemand | shows how to reproduce the functionality of img-src-ondemand module |
| test_infinite_scroll | shows how to implement infinite scroll with this module |
| test_scroll_to_animate | shows how to implement common animation trigger on scrolling to |
| test_scroll_to_end | shows how to trigger the action at the end instead of at the beginning |
| test_scroll_container | shows how to achieve the same effect with a container instead of window |
| test_lazy_img_in_container | shows how to lazy load images in a container that is not window |
| test_interval | shows how to check and trigger action more / less often |
| test_offset | shows how to trigger action in advance / with delay in terms of screen position |
| test_trigger_run | shows how to run the action once on load regardless of the screen position |
| test_trigger_active | shows how to conditionally trigger action |
| test_scope | shows scrollTrigger can access the scope on the element, and is able to call functions / retreive data from the scope |
| test_multiple | |
| test_scroll |
<div scroll-trigger="doSomething()"></div>trigger-run: runs the trigger when the page is loaded regardless of the relative position of the elementtrigger-at-end: instead of triggering when the top of the element enters the screen, trigger at the endtrigger-persist: do not remove the trigger (event listener) after it has been triggeredtrigger-active: conditionally check screen positionscroll-container: instead of listening onwindow, listen on a specific containerscroll-trigger-id: manually assign a unique identifier
offset: gives you adjustable spaceinterval: gives you adjustable timing