Browsers without "deltaMode" is reporting in raw wheel delta where one notch on the scroll is always +/- 120, roughly equivalent to pixels.
Browsers without "deltaMode" is reporting in raw wheel delta where one notch on the scroll is always +/- 120, roughly equivalent to pixels. A good approximation of DOM_DELTA_LINE (1) is 5% of viewport size or ~40 pixels, for DOM_DELTA_SCREEN (2) it is 87.5% of viewport size.
Specifies some detail information about the Event, depending on the type of event.
Specifies some detail information about the Event, depending on the type of event. The un-initialized value of this attribute must be 0.
Stops the default action of an element from happening.
Stops the default action of an element from happening. For example: Prevent a submit button from submitting a form Prevent a link from following the URL
Stops the bubbling of an event to parent elements, preventing any parent event handlers from being executed.
Stops the bubbling of an event to parent elements, preventing any parent event handlers from being executed.
The view attribute identifies the AbstractView from which the event was generated.
The view attribute identifies the AbstractView from which the event was generated. The un-initialized value of this attribute must be null.
https://github.com/facebook/react/blob/master/src/browser/syntheticEvents/SyntheticWheelEvent.js