headspace.js

Next generation web header UX. This is similar to headroom.js, but different in areas I believe could be improved:

• Header initially scrolls naturally out of view as if it is static
• Header reappears fixed when scrolling up, hides when scrolling back down (if greater that scroll tolerance)
• Header can reappear when reaching bottom of the document
• Header can reappear if hovering near the top
• Interaction/tolerance should match closely to mobile safari's chrome
• Minimal footprint, more opinionated

Sites like medium.com, teehan + lax deploy a similar technique

Demo

demo.html

Install

npm install headspace --save

Usage

// Basic example:
const headspace = Headspace(document.querySelector('header'))

// Advanced example with options:
Headspace(document.querySelector('header'), { // can use factory method or `new Headspace`
  startOffset: 90,                            // default: height of element
  tolerance: 5,                               // default: 8
  showAtBottom: false,                        // default: true
  classNames: {
    base: 'custom',                           // default: 'headspace'
    fixed: 'custom--fixed',                   // default: 'headspace--fixed'
    hidden: 'custom--hidden'                  // default: 'headspace--hidden'
  }
})

Base css: To get started quickly with the minimal amount of css, copy contents of dist/headspace.css to your project.

Browser support

Out of the box: Chrome 24+, Firefox 23+, Safari 7+, IE 10+
AKA browsers that natively support classList and requestAnimationFrame

You can globally pollyfill them if needed, otherwise the code is structured so you can manually shim-in support.
Headroom.isSupported() will check if it can be used out of the box on the current browser/environment

Build

npm run build

Test

npm test