File: style_load_event.html

package info (click to toggle)
thunderbird 1%3A143.0.1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 4,703,968 kB
  • sloc: cpp: 7,770,492; javascript: 5,943,842; ansic: 3,918,754; python: 1,418,263; xml: 653,354; asm: 474,045; java: 183,079; sh: 111,238; makefile: 20,410; perl: 14,359; objc: 13,059; yacc: 4,583; pascal: 3,405; lex: 1,720; ruby: 999; exp: 762; sql: 715; awk: 580; php: 436; lisp: 430; sed: 69; csh: 10
file content (28 lines) | stat: -rw-r--r-- 1,027 bytes parent folder | download | duplicates (17) 
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>
<title>HTML Test: The style load event should fire when textContent is changed</title>
<link rel="author" href="mailto:masonf@chromium.org">
<link rel="help" href="https://html.spec.whatwg.org/multipage/semantics.html#update-a-style-block">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
  var loadCount = 0;
  function load() { loadCount++; }
</script>

<style id=target onload="load()">
  .box { color:red; }
</style>
<div class='box'>Box</div>

<script>
window.onload = () => {
  const target = document.getElementById('target');
  promise_test(async t => {
    assert_equals(loadCount,1,"Style element should have loaded once by now");
    target.textContent = `.box { color: green; }`;
    await new Promise(resolve => target.addEventListener('load', resolve));
    assert_equals(loadCount,2,"Style element should fire the load event when textContent changes");
  },"style load event should fire when textContent changed");
};
</script>