Summary

Gets the X coordinate of the top-left corner of the window's viewport, in screen coordinates.

Note: This coordinate is reported in CSS pixels, not in hardware pixels. That means it can be affected by the zoom level; to compute the actual number of physical screen pixels, you should use the nsIDOMWindowUtils.screenPixelsPerCSSPixel property.

Syntax

screenX = window.mozInnerScreenX;

Value

  • screenX stores the window.mozInnerScreenX property value.
  • The window.mozInnerScreenX property is a floating point, read-only value; it has no default value.

Specification

Not part of any W3C technical specification or recommendation.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Non-standard
Chrome No support NoEdge No support NoFirefox Full support YesIE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android Full support YesOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

See also

Document Tags and Contributors

Contributors to this page: connorshea, sarafec, fscholz, teoli, libreGeekingKid, Sheppy, ethertank
Last updated by: connorshea,