Easy Ease

A tiny easing package (~0.2 KB gzipped) with no dependencies. For doing stuff like:

• Scrolling smoothly to the top of the page
• Sliding out a navigation menu
• Sliding open an accordion component

You won't find any options for different types of easing here. What you get is a nice ease-in-out
similar to the default animation for transition in CSS.

If you'd prefer to choose from the full suite of
Robert Penner equations, try tween.js
or d3-ease instead.

Usage

npm install easy-ease

Example

To scroll the window to the top of the page:

 import ease from 'easy-ease';

ease({
  startValue: window.scrollY,
  endValue: 0,
  onStep: value => window.scroll(0, value),
});

Have a play with some other examples on CodePen https://codepen.io/davidgilbertson/pen/GyrZNz

API

The ease function takes a single parameter, an object. The properties of that object are: