1316587 - Incorrect advice regarding clientWidth and getBoundingClientRect

Status: RESOLVED WONTFIX

(Developer Documentation Graveyard :: API: DOM, defect, P5)

Description

[Ken Kahn]

:: Developer Documentation Request

      Request Type: Correction
     Gecko Version: unspecified
 Technical Contact: 

:: Details

The page states

This property will round the value to an integer. If you need a fractional value, use element.getBoundingClientRect().

and yet according to https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect

Starting in Gecko 12.0 (Firefox 12.0 / Thunderbird 12.0 / SeaMonkey 2.9), the effect of CSS transforms is considered when computing the element's bounding rectangle.

So getBoundingClientRect will not return the non-integer width or height if a transform such as scale is in effect.

Same problem with https://developer.mozilla.org/en-US/docs/Web/API/Element/clientHeight

Related to Bug 1239467

Comment 1

[BMO Automation]

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