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The Window.screenX read-only property returns the horizontal distance, in CSS pixels, of the left border of the user's browser from the left side of the screen.

Syntax

lLoc = window.screenX 
  • lLoc is the number of CSS pixels from the left side the screen.

Specifications

Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'Window.screenX' in that specification.
Working Draft Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) [1] (Yes) (Yes) (Yes)
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) [1] (Yes) (Yes) (Yes)

[1] Before Firefox 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.

See also

Document Tags and Contributors

Last updated by: erikadoyle,