a sticky lib to simulate stickily positioned element.

• typescript features & vanilla js
• use CSS sticky firstly
• support ie9+
• only support sticky top

Using npm:

$ npm install @autots/sticky -S

Using yarn:

$ yarn add @autots/sticky

<section id="demo">
  <div class="child"></div>
</section>

Note: When the host browser doesn't support css position: sticky, the lib will fall back to use scroll event on window object, and set some css properties to his fisrtElementChild.

import Sticky from '@autots/sticky';

// 1. The simplest way
new Sticky('#demo');

// 2. use config
new Sticky('#demo', {
  top: 10,
  zIndex: 100
})

<script src="dist/sticky.min.js"></script>

<script>
  var stickyDemo = new AutoTs.Sticky(el, config);
</script>

scrollRefer & offsetParent must have a non-static position.

• support config direction