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

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


var recTop =;


A double.


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes No1 Yes No1 Yes10.1
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes No1 Yes Yes10.1 ?

1. Implemented on the proprietary ClientRect interface.

See also

Document Tags and Contributors

Contributors to this page: connorshea, rolfedh, chrisdavidmills
Last updated by: connorshea,