Wheel events momentumLimited availability
The momentum property of a wheel event object is true when the event represents simulated scroll inertia, also known as a "fling" event.
Not yet supported in all major browsers — check the table and provide a fallback.
Browser support
DesktopChrome
1–150Not supported
151+Supportedsince Jul 28, 2026
Current: 155Edge
12–150Not supported
151+Supportedsince Jul 31, 2026
Current: 154Firefox
✕Not supportedup to 157
Current: 157Safari
✕Not supportedup to 27
Current: 27MobileChrome Android
18–150Not supported
151+Supportedsince Jul 28, 2026
Current: 155Firefox Android
✕Not supportedup to 157
Current: 157Safari iOS
✕Not supportedup to 27
Current: 27How to use
Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.
Example
Full syntax and examples are on MDN — see the links below.
Feature detection
JS · check before using
if ("WheelEvent" in globalThis && "momentum" in WheelEvent.prototype) {
// WheelEvent.momentum is available
}