This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The left read-only property of the DOMRectReadOnly interface returns the left coordinate value of the DOMRect. (Has the same value as x, or x + width if width is negative.)


var recLeft = DOMRect.left;


A double.


Specification Status Comment
Geometry Interfaces Module Level 1
The definition of 'left' in that specification.
Candidate Recommendation Latest spec version is an ED.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
leftChrome Full support YesEdge Full support 79Firefox Full support YesIE No support No
No support No
Notes Implemented on the proprietary ClientRect interface.
Opera Full support YesSafari Full support 10.1WebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support 10.3Samsung Internet Android Full support Yes


Full support  
Full support
No support  
No support
See implementation notes.
See implementation notes.

See also