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In motion design, dolly-in, also known as push-in, and zoom-in are effects where the camera moves toward the subject. This is often used to draw focus to an area of interest in a scene.
In this article, I will introduce you to a new JS library called pushIn.js to achieve this effect.
How to use it:
<link rel="stylesheet" href="/path/to/pushin.min.css" /> <script src="/path/to/pushin.min.js"></script>
2. Initialize the pushIn.js on the target element.
const container = document.querySelector('.pushin'); new PushIn(container).start();
3. The library allows multiple layers in the same pushIn container. This can be useful in creating a parallax scrolling effect.
<div class="pushin"> <div class="pushin-scene"> <div class="pushin-layer"> Layer 1 </div> <div class="pushin-layer"> Layer 2 </div> <div class="pushin-layer"> Layer 3 </div> ... </div> </div>
4. Determine the position (in pixels) at which the Dolly-in effect starts & ends.
<div class="layer" data-pushin-from="300"> Layer 1 </div> <div class="layer" data-pushin-to="600"> Layer 2 </div>
5. Set the animation speed in milliseconds.
<div class="layer" data-pushin-speed="25"> Layer 1 </div> <div class="layer" data-pushin-speed="35"> Layer 2 </div>
6. Specify custom breakpoints for responsive design.
<div class="pushin-scene" data-pushin-breakpoints="360,480,1200"> <div class="pushin-layer" data-pushin-from="200,150,100"> Layer 1 </div> </div>
- Updated dependencies.
- Extend PushInBase abstract class
- Update package
- Only get target container height on plugin initialization
- Bind scroll event to window while containing effect with “target”
- Use Composition to lock the aspect ratio of this effect. Ensures easier positioning of objects in your scene when viewing on different screen sizes
- Constrain the PushIn effect to any container element on the page by providing a selector. This also attaches all event listeners to the provided element.
- Added options to control transitions at the start and end of each layer.
- Ensure that screen readers advance scrolling experience when reading through content
- Support interactive elements such as links, buttons, etc…