wheel-indicator

Indicates when user makes swipe gesture on a trackpad or mouse wheel.

Installing

npm i -S wheel-indicator

or oldschool method:

<script src="wheel-indicator.js"></script>

Usage

var WheelIndicator = require('wheel-indicator'); // ← if you use build system
 
var indicator = new WheelIndicator({
  elem: document.querySelector('.element'),
  callback: function(e){
    console.log(e.direction) // "up" or "down"
  }
});
 
//The method call
indicator.getOption('preventMouse'); // true

API

Options

Field	Type	Default value	Mutable (by setOptions())	Description
elem	Object (dom node)	document	No	DOM node to listen wheel event on.
callback	Function	-	Yes	The callback, which will be triggered on gesture. Gets for the first argument a native wheel event object, extended by direction property, taking value 'up' or 'down'.
preventMouse	Bool	true	Yes	Disables mouse wheel working. In other words applies preventDefault() to wheel event.

Instance methods

Method	Description
turnOff()	Turns off callback triggering.
turnOn()	Turns on callback trigerring.
setOptions(options)	Sets the mutable options. The only argument must be Object.
getOption('option')	Returns option value. The only argument must be String.
destroy()	Removes event listener.