onScroll([callback], [remove])

Class: TextArea. Method inherited from UIComponent.

Description:

Gets, registers or unregisters an event handler function for scrolling of vertical and/or horizontal scroll bars. Applicable only to components with scroll bars.

Parameters:

Name	Type	Default	Description
`[callback]`	function		The event handler function that receives a ScrollEvent object. Pass `null` to unregister all handler functions.
`[remove]`	boolean	false	Set to `true` to unregister the event handler.

Returns:

An array of handler functions if no arguments are passed, otherwise this component for method chaining.

Type: this | Array.<function()>

Examples:

// Example event object:
const e = {
  target: object,  // The component that triggered the event.
  type: string,    // `horizontal`, `vertical`.
  x: number,       // New value of horizontal scroll position
  y: number,       // New value of vertical scroll position
  maxX: number,    // Maximum value of horizontal scroll position
  maxY: number     // Maximum value of vertical scroll position
};

Also See:

ScrollEvent