Bug Tracker

Opened 15 years ago

Closed 12 years ago

#2944 closed bug (wontfix)

Query z-index in IE6 with css

Reported by: tonyt Owned by: flesler
Priority: low Milestone: 1.3
Component: css Version: 1.2.5
Keywords: Cc:
Blocked by: Blocking:


To reproduce the problem

var aa = jQuey("#content").css('z-index');
var bb = (/^\d+$/.test($("#content").css('z-index')));

1.2.6 FF - aa -> auto; bb -> false IE6 -aa -> 0 ; bb->true

1.2.3 FF - aa -> auto; bb -> false IE6 -aa -> undefined ; bb->false

the element <div id="content"> some content here </div>

in css there is no attached z-index of this element

Change History (5)

comment:1 Changed 15 years ago by tonyt

sorry for the typo the code is

var aa = jQuery("#content").css('z-index');
var bb = (/^\d+$/.test(jQuery("#content").css('z-index')));

comment:2 Changed 15 years ago by flesler

Owner: set to flesler
Status: newassigned

The undefined returned by jQuery 1.2.3 was wrong. It was a 0 "masked" into undefined. So it turns out that IE defaults zindexes to 0 and FF to auto. The question here is: Should we normalize this ? to what ?

I'll try to check other browsers to see what's the common denominator.

comment:3 Changed 15 years ago by tonyt

Looking deeper of this - actually this is a bug in IE6/IE7. If this can help here is link to this problem:


My question too is what should jQuery return in this case? Thank you

comment:4 Changed 13 years ago by dmethvin

Component: corecss

IE returns "auto" in many cases, so whatever is done here should be compared with "auto" elsewhere.

comment:5 Changed 12 years ago by jitter

Priority: majorlow
Resolution: wontfix
Status: assignedclosed

It's up to the browser what the default value for a css property is. Both auto and 0 are valid values.

test case to proof valid values are returned.

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