Bug 158507

Summary: Setting a style on the body right after load doesn't trigger a style recalc
Product: WebKit Reporter: Sam Weinig <sam>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: ahmad.saleem792, ap, bfulgham, koivisto, simon.fraser, zalan
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Test case none

Sam Weinig
Reported 2016-06-07 18:22:22 PDT
Created attachment 280758 [details] Test case While investigating a test failure, I ran into this issue. It seems that if you try to set a style on the body, right after load, and then read it back via getComputedStyle, it won't get set. Interestingly, this only happens the first time. If you immediately set the same style again, it works. Test case attached.
Attachments
Test case (805 bytes, text/html)
2016-06-07 18:22 PDT, Sam Weinig 		no flags
Details
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Ahmad Saleem
Comment 1 2022-09-03 14:39:05 PDT
While trying to reproduce this using attached test case, I get following error in Chrome Canary 107 and Firefox Nightly 106 (just pasting "Chrome" error message but it is same in both): Uncaught TypeError: window.getComputedStyle(...).getPropertyCSSValue is not a function at test (attachment.cgi?id=280758:17:56) at window.onload (attachment.cgi?id=280758:28:5) While Safari Technology Preview 152 (on macOS 12.5.1 in Private Window) jut shows: PASS: rgb(255, 0, 0) is rgb(255, 0, 0). PASS: rgb(255, 0, 0) is rgb(255, 0, 0). Just wanted to share updated results. Thanks!
Alexey Proskuryakov
Comment 2 2022-09-04 13:45:34 PDT
The test fails in other browsers because on deprecated getPropertyCSSValue. Since it passes in Safari now, config changed.
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