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Opened 5 years ago

Closed 5 years ago

#12324 closed bug (fixed)

cssNormalTransform can produce wrong values

Reported by: anonymous Owned by: mikesherov
Priority: high Milestone: 1.8.1
Component: css Version: 1.8.0
Keywords: Cc:
Blocked by: Blocking:


In jQuery 1.8 there is an cssNormalTransform property that holds numerical default values for CSS properties whose “computed style” evaluates to “normal”. These fixed values may be just wrong in some cases. E.g. for “line-height” the CSS spec clearly states that the the computed value in such a case is “normal” and the user agent can choose a “reasonable” value. Values between 1.0 to 1.2 are recommended.

In most cases the value may be 1.0. But for some elements (e.g. <textarea>) it is different in most browsers.

The same may be true for “line-height”.

jQuery should just return “normal” in these cases (as it did in previous versions).

Change History (5)

comment:1 Changed 5 years ago by mikesherov

  • Component changed from unfiled to css
  • Owner set to anonymous
  • Status changed from new to pending

Can you provide a test case that proves line-height is wrong in certain cases?

comment:2 Changed 5 years ago by anonymous

  • Status changed from pending to new

Okay, here’s a test case: http://jsfiddle.net/u9yV9/ As you can see, jQuery calculates the “line-height” as “1”. When you hover the textarea with the mouse, “line-height: 1” is explicitly set via CSS. If jQuery was correct, there should be no noticeable difference, but you can see that the actual line height changes.

comment:3 Changed 5 years ago by mikesherov

  • Milestone changed from None to 1.8.1
  • Owner changed from anonymous to mikesherov
  • Priority changed from undecided to high
  • Status changed from new to assigned

Thanks! Fix to come shortly.

comment:5 Changed 5 years ago by Mike Sherov

  • Resolution set to fixed
  • Status changed from assigned to closed

Fix #12324, line-height "normal" isn't always "1". Close gh-898.

Changeset: 9f86dc922ed832337d246d7baf8fd397dc837346

Please follow the bug reporting guidlines and use jsFiddle when providing test cases and demonstrations instead of pasting the code in the ticket.

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