---
title: MouseEvent.WEBKIT_FORCE_AT_MOUSE_DOWN
slug: Web/API/MouseEvent/WEBKIT_FORCE_AT_MOUSE_DOWN
tags:
  - API
  - DOM
  - DOM Events
  - JavaScript
  - MouseEvent
  - NeedsBrowserCompatibility
  - NeedsCompatTable
  - NeedsExample
  - NeedsMobileBrowserCompatibility
  - Non-standard
  - Property
  - Reference
  - WEBKIT_FORCE_AT_MOUSE_DOWN
---
{{Non-standard_header()}}

**`MouseEvent.WEBKIT_FORCE_AT_MOUSE_DOWN`** is a proprietary, WebKit-specific, static numeric property whose value is the minimum force necessary for a normal click.

Because `WEBKIT_FORCE_AT_MOUSE_DOWN` is a static property of `MouseEvent`, you always use it as `MouseEvent.WEBKIT_FORCE_AT_MOUSE_DOWN`, rather than as a property of a `MouseEvent` instance.

## Specifications

_Not part of any specification._ Apple has [a description at the Mac Developer Library](https://developer.apple.com/library/prerelease/mac/documentation/AppleApplications/Conceptual/SafariJSProgTopics/RespondingtoForceTouchEventsfromJavaScript.html).

## See also

- {{domxref("MouseEvent.WEBKIT_FORCE_AT_FORCE_MOUSE_DOWN")}}
- {{domxref("MouseEvent.webkitForce")}}
- {{domxref("Force_Touch_events")}}
