File: custom-property-transition-non-inherited-used-by-standard-property.html

package info (click to toggle)
thunderbird 1%3A115.16.0esr-1~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 3,476,252 kB
  • sloc: cpp: 6,972,150; javascript: 5,209,211; ansic: 3,507,222; python: 1,137,609; asm: 432,531; xml: 205,149; java: 175,761; sh: 116,485; makefile: 22,152; perl: 13,971; objc: 12,561; yacc: 4,583; pascal: 2,840; lex: 1,720; ruby: 1,075; exp: 762; sql: 666; awk: 580; php: 436; lisp: 430; sed: 70; csh: 10
file content (28 lines) | stat: -rw-r--r-- 904 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
<!DOCTYPE html>
<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<div id="target"></div>
<script>

test(() => {
  const customProperty = "--my-length";

  CSS.registerProperty({
    name: customProperty,
    syntax: "<length>",
    inherits: false,
    initialValue: "100px"
  });

  target.style.marginLeft = `var(${customProperty})`;
  assert_equals(getComputedStyle(target).marginLeft, "100px");

  target.style.transition = `${customProperty} 1s -500ms linear`;
  target.style.setProperty(customProperty, "200px");

  assert_equals(getComputedStyle(target).marginLeft, "150px");
}, "Running a transition a non-inherited CSS variable is reflected on a standard property using that variable as a value");

</script>