Author: | nateplusplus |
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Views Total: | 341 views |
Official Page: | Go to website |
Last Update: | May 30, 2023 |
License: | MIT |
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Description:
In motion design, dolly-in, also known as push-in and zoom-in effects, is 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.
pushIn.js is a tiny, high-performance JavaScript library that applies a configurable dolly-in (also called push-in) to elements when scrolling the webpage.
How to use it:
1. Install and import the PushIn component.
# NPM $ npm i pushin
// ES module import { PushIn } from 'pushin';
<!-- OR --> <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>
7. All possible options & HTML data
attributes:
const config = { debug: 'false', selector: '.pushin', target: undefined, // data-pushin-target scrollTarget: 'window', // data-pushin-scroll-target mode: 'sequential or continuous', // data-pushin-mode autoStart: 'scroll, screen-top, or screen-bottom', // data-pushin-auto-start length: 1000, // in px, data-pushin-length scene: { breakpoints: [], // data-pushin-breakpoints inpoints: 0; // data-pushin-from layerDepth: 1000 // data-pushin-layer-depth }, composition: { ratio: [1,2] // data-pushin-ratio }, layers: [ // Layer 1 { inpoints: undefined; // data-pushin-from outpoints: undefined; // data-pushin-to speed: 8, // data-pushin-speed transitions: false, // data-pushin-transitions transitionStart: 200, // data-pushin-transition-start transitionEnd: 200, // data-pushin-transition-end }, // Layer 2... ], } new PushIn(container, config).start(),
Changelog:
v6.0.0 (04/22/2023)
- Automatically append CSS with JavaScript (no longer need to import both).
- Added mode setting for easier parallax design vs sequential animations.
- Added autoStart setting to automatically start the effect based on the scroll position (less dependency on hard inpoints).
- Accessibility improvements.
v5.2.3 (03/18/2023)
- Updated dependencies.
v5.2.2 (12/22/2022)
- Updated dependencies.
v5.2.1 (09/25/2022)
- Updated dependencies.
v5.2.0 (08/18/2022)
- Extend PushInBase abstract class
v5.1.2 (08/11/2022)
- Update package
v5.1.1 (07/16/2022)
- Only get target container height on plugin initialization
v5.1.0 (07/11/2022)
- Bind scroll event to window while containing effect with “target”
v5.0.2 (06/29/2022)
- Bugfixes
v5.0.1 (06/20/2022)
- Bugfixes
v5.0.0 (06/18/2022)
- 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.
- Bugfixes.
v4.1.3 (06/05/2022)
- Ensure that screen readers advance scrolling experience when reading through content
- Support interactive elements such as links, buttons, etc…