Hide and show content.
Use a button to toggle jQuery visibility and an accessibility state.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Example</title>
</head>
<body>
<button aria-expanded="true" aria-controls="panel">Toggle</button><div id="panel">Details</div>
<script src="jquery.min.js"></script>
<script>
$(function () {
$("button").on("click", function () { $("#panel").toggle(); $(this).attr("aria-expanded", String($("#panel").is(":visible"))); });
});
</script>
</body>
</html>Expected output EXAMPLE
Click the “button” element. The “#panel” element is not visible. The “button” element has aria-expanded set to “false”. Click the “button” element. The “#panel” element is visible.
Details
Save as example.html beside jquery.min.js (jQuery 3.5.1). Open in a browser. The test uses the same local jQuery file as this website, with no CDN or network requests.
Tested on Ubuntu 24.04.5 LTS · · Chromium 141.0.7390.37 · libc6 2.39-0ubuntu8.9; Playwright 1.56.0; jQuery 3.5.1
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Unprivileged snippet process, external networking disabled, read-only root filesystem, and a fresh temporary working directory. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged) / C.UTF-8
- Interpreter invocation
Chromium: open example.html; execute the published browser assertions- Container image ID
sha256:32dc2d998158b6554c99b73b533f423696a0f3e31e8cbea9db10b5eee9a2fadd- Code SHA-256
a6f952655519f1652bc0fba12ab7282da8268aea51b07efaf0431532ed35a992- Dependencies
- libc6 2.39-0ubuntu8.9; Playwright 1.56.0; jQuery 3.5.1
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
# No input files required.
Observed standard output
Expected output describes the rendered page. The standard-output record below is the browser test harness receipt; the additional assertions check the result and interactions.
Hide and show content: browser checks passed.
Exit code: 0. Standard error: empty. Validation: Shape/content assertions. System-dependent values above are one recorded run.
Additional assertions that passed
Checks recorded by the test harness. Where Python assertions are shown, browser cases use Playwright and simulator cases may inspect pin transitions: result.stdout is captured output, work is the temporary directory, and Path is pathlib.Path. The harness also imports json and csv.
await page.locator('button').click()
assert not await page.locator('#panel').is_visible()
assert await page.locator('button').get_attribute('aria-expanded') == 'false'
await page.locator('button').click()
assert await page.locator('#panel').is_visible()