File: position-absolute-container-dynamic.html

package info (click to toggle)
firefox-esr 78.15.0esr-1~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 3,301,296 kB
  • sloc: cpp: 5,665,905; javascript: 4,798,386; ansic: 2,878,233; python: 977,004; asm: 270,347; xml: 181,456; java: 111,756; sh: 72,926; makefile: 21,819; perl: 13,380; cs: 4,725; yacc: 4,565; objc: 3,026; pascal: 1,787; lex: 1,720; ada: 1,681; exp: 505; php: 436; lisp: 260; awk: 152; ruby: 103; csh: 80; sed: 53; sql: 45
file content (35 lines) | stat: -rw-r--r-- 972 bytes parent folder | download | duplicates (28) 
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
29
30
31
32
33
34
35
 
<!DOCTYPE html>
<title>CSS Position Absolute: dynamic changes to containing block width</title>
<link rel="author" href="mailto:atotic@google.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://www.w3.org/TR/css-position-3/#abs-non-replaced-width">
<meta name="assert" content="abspos descendant responds to containing block size change">
<style>

#container {
  position: relative;
  width: 50px;
  height: 100px;
  background: red;
}
#target {
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  background: green;
}
</style>
<div id="container">
  <div style="display:flex;">
    <div id="target"></div>
  </div>
</div>
<script>
document.body.offsetTop;
test(() => {
  document.getElementById("container").style.width = "100px";
  assert_equals(document.querySelector("#target").offsetWidth, 100);
}, '#target used container width when computing size');
</script>