Headroom.js
Headroom.js is a lightweight, high-performance JS widget (with no dependencies) that allows you to react to the user's scroll. The header on this site is a living example, it slides out of view when scrolling down and slides back in when scrolling up.
Installation
Headroom.js is available on npm. To install:
npm install headroom.js --save
# or...
yarn add headroom.js
A a universal build (suitable for script tags, CommonJS, and AMD) is available from unpkg.com:
Documentation
For complete documentation please visit the headroom.js website.
Quick start
After installing headroom.js. The following JS will create and initialise a headroom instance:
import Headroom from "headroom.js";
// select your header or whatever element you wish
const header = document.querySelector("header");
const headroom = new Headroom(header);
headroom.init();
Then you can add the following CSS to your page:
.headroom {
will-change: transform;
transition: transform 200ms linear;
}
.headroom--pinned {
transform: translateY(0%);
}
.headroom--unpinned {
transform: translateY(-100%);
}
You should now see your header slide in and out in response to the user's scroll.
Contributions & Issues
Contributions are welcome. Please clearly explain the purpose of the PR and follow the current code style.
Issues can be resolved quickest if they are descriptive and include both a reduced test case and a set of steps to reproduce.
Contributing Guide
Setup
The following steps will get you setup to contribute changes to this repo:
- Fork the repo (click the Fork button at the top right of this page)
- Clone your fork locally
git clone https://github.com/<your_github_username>/headroom.js.git
cd headroom.js
- Install dependencies. This repo uses
npm, so you should too.
npm install
Building
To build the project:
npm run build
To start a watcher for building the project and running tests:
npm start
Testing
To run the test suite in headless mode:
npm test
License
Licensed under the MIT License.
