on-flick

$3

Fire an event on a trackpad or mousewheel flick. Scroll values on trackpads can have inertia and take a long time to come back down to 0 - this plugin smooths out those false positive scroll events. Demo

$3

HTML:

``html

`

JS:

`js
new OnFlick( callback, options );
`

Parameters:
* callback - Function to run when flick event is triggered. Accepts the mousewheel event as an argument.
* options - Optional object. Outlined below.

#### Options

`javascript
{
debounce: 600, // How long, in ms, to wait after the callback is invoked before it can be invoked again
threshold: 10 // How fast the user needs to be scrolling in order to trigger the callback. Accepts a number referring to the average scroll delta necessary to trigger the event.
});
`

$3


The plugin keeps a running tally of the last 10 scroll deltas. Each frame that the mousewheel event is called, it:
* trims the oldest delta value if necessary
* saves the latest delta value
* averages them together
* tests if the average is above the threshold` defined in the options.

This is more effective than a debounce function because debounce limits the frequency of a callback, not the conditions for triggering that callback. OnFlick combines the hard time limit of a debounce with an effort to make sure the user is actively moving on the page, not just running off of the inertia of an old trackpad event.

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Version 2.0