Sticky
Scrolltrigger
Scroll

For full API see Gsap ScrollTrigger API.

Usage

A sticky can be achieved by assigning ScrollTrigger with pin: true and pinSpacing: false.

	Syntax	Default / Arguments	Description
Option	`pin:Boolean\|String\|Element`	`false`	Pin the trigger when scrolling
Option	`pinSpacing:Boolean\|String`	`true`	Add distance spacing for the pinned element

Use the component classes to create a sticky.

	Syntax	Mixin	Description
Component	`.xt-sticky`	`xt-sticky`	Styles for sticky
Component	`.xt-sticky.xt-sticky-nozindex`	`xt-sticky xt-sticky-nozindex`	Do not set `z-index` for this sticky
Component	`.xt-sticky.xt-sticky-noheight`	`xt-sticky xt-sticky-noheight`	Do not set `height` and `maxHeight` for this sticky

You can toggle classes on activation using toggleClass: '<className>'.

	Syntax	Default / Arguments	Description
Option	`toggleClass:String\|Object`	`null`	Toggle class with ScrollTrigger activation/deactivation

You can also use once: true to destroy ScrollTrigger as soon as the end position is reached once.

	Syntax	Default / Arguments	Description
Option	`once:Boolean`	`false`	Activate only once

Distance

Use trigger, start, endTrigger, end to control activation depending on position of trigger relative to viewport.

Use endTrigger: 'html' and end: 'bottom top' to make the end position infinite.

	Syntax	Default / Arguments	Description
Option	`trigger:String\|Element`	`undefined`	Scroll trigger
Option	`start:String\|Number\|Function`	`'top bottom'`	Start position: first argument is for trigger second argument is for scroller
Option	`endTrigger:String\|Element`	`false`	End trigger
Option	`end:String\|Number\|Function`	`'bottom top'`	End position: first argument is for endTrigger second argument is for scroller

Here's an example of complex sticky stacking.

Event

You can use onEnter, onLeave, onEnterBack, onLeaveBack, onToggle, onUpdate, onScrubComplete, and onRefresh to animate on certain events.

Do not transition or transform on .xt-sticky when pin: true because of transform positioning, transition the content instead.

Here's an examples of sticky that hides depending on scroll position and scroll direction.