noscripter/scrollin

:scroll: A leak free performance focused scroll util

Scrollin

**Do something great when an element enters the viewport.**

Install

npm i scrollin

bower i scrollin

Use

Scrollin.track(document.querySelector('#hi'), () => alert('hi!'))

Options

You can specify optional offset params to control when an elements is considered in the "viewport".

Scrollin.track(document.querySelector('#hi'), () => alert('hi!'), {
  top: 10,
  right: -10,
  bottom: 10,
  left: 10
})

API

• Scrollin.track(document.querySelector('#hi'), () => alert('hi!'))
• Scrollin.untrackAll()
• Scrollin.untrack(document.querySelector('#hi'))
• Scrollin.checkForVisibleElements()
• Scrollin.getTracking()

Dev

• npm i
• npm run dev

Building

• npm run compile

Polyfill Caveats

• You may need to polyfill window.requestAnimationFrame
• You may need to polyfill Array.prototype.splice
• You may need to polyfill Array.prototype.some

📜