html6.3 KB
Length-Constraint Matrix (HTML)
Textual controls carrying explicit minlength and maxlength bounds - including the exact-length and maximum-only cases, and a textarea whose counter hint and attribute must agree - for testing length validation and truncation behaviour.
Preview — first 37 lineshtml
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Length-constraint matrix - Novus Examples</title>
<meta name="description" content="minlength and maxlength across every textual control type. SAMPLE test data only.">
<style>:root{--bg:#f6f7f9;--card:#fff;--fg:#1a1d23;--muted:#5b6472;--border:#d9dee6;--accent:#0f9d6b;--accent-d:#0c7f56;--err:#d33;--radius:10px}*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--fg);padding:2rem 1rem}.wrap{max-width:640px;margin:0 auto}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:1.75rem;box-shadow:0 1px 3px rgba(0,0,0,.05)}h1{margin:0 0 .25rem;font-size:1.55rem}.lead{margin:0 0 1.5rem;color:var(--muted)}form{display:grid;gap:1.1rem}.field{display:grid;gap:.35rem}label{font-weight:600;font-size:.92rem}.req{color:var(--err)}.hint{font-size:.8rem;color:var(--muted)}input,select,textarea{font:inherit;color:inherit;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:.6rem .7rem;width:100%}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}textarea{resize:vertical;min-height:110px}input[type=range]{padding:0}input[type=color]{height:44px;padding:.25rem}input[type=file]{padding:.45rem}.group{display:grid;gap:.45rem}.opt{display:flex;align-items:center;gap:.55rem;font-weight:400}.opt input{width:auto}.inline{display:flex;flex-wrap:wrap;gap:1rem}fieldset{border:1px solid var(--border);border-radius:12px;padding:1rem;margin:0}legend{font-weight:600;padding:0 .4rem}.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}button{font:inherit;font-weight:700;cursor:pointer;border:0;border-radius:var(--radius);padding:.7rem 1.3rem}.btn{background:var(--accent);color:#fff}.btn:hover{background:var(--accent-d)}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.actions{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:.3rem}.ok{display:none;background:#e7f7ef;border:1px solid #b6e6cf;color:#0c7f56;border-radius:var(--radius);padding:.7rem .9rem;font-size:.9rem}.foot{margin-top:1.25rem;font-size:.78rem;color:var(--muted);text-align:center}@media(max-width:480px){body{padding:1rem .5rem}.card{padding:1.25rem}}.grid2{display:grid;gap:1.1rem;grid-template-columns:1fr}@media(min-width:560px){.grid2{grid-template-columns:1fr 1fr}}.note{font-size:.82rem;color:var(--muted);border-left:3px solid var(--border);padding:.15rem 0 .15rem .7rem;margin:.2rem 0}.steps{display:flex;gap:.4rem;flex-wrap:wrap;list-style:none;padding:0;margin:0 0 1.1rem;font-size:.8rem}.steps li{border:1px solid var(--border);border-radius:999px;padding:.2rem .7rem;color:var(--muted)}.steps li[aria-current=step]{border-color:var(--accent);color:var(--accent-d);font-weight:700}.vh{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}table.matrix{width:100%;border-collapse:collapse;font-size:.85rem}table.matrix th,table.matrix td{border:1px solid var(--border);padding:.4rem .5rem;text-align:left}table.matrix th{background:#eef1f5;font-weight:600}[data-branch]{display:none}[data-branch].on{display:grid}input:read-only,textarea:read-only{background:#f1f3f6;color:var(--muted)}input:disabled,select:disabled,textarea:disabled{background:#eceff3;color:#9aa3af}</style>
</head>
<body>
<main class="wrap"><div class="card">
<h1>Length-constraint matrix</h1>
<p class="lead">minlength and maxlength across every textual control type. SAMPLE test data only.</p>
<form method="post" action="#" novalidate>
<div class="hp" aria-hidden="true"><label>Leave this field empty<input type="text" name="website" tabindex="-1" autocomplete="off"></label></div>
<fieldset><legend>Bounded on both sides</legend>
<div class="field"><label for="f-display_name">Display name <span class="req">*</span></label><input id="f-display_name" type="text" name="display_name" minlength="2" maxlength="40" required></div>
<div class="field"><label for="f-passphrase">Passphrase</label><input id="f-passphrase" type="password" name="passphrase" autocomplete="new-password" minlength="12" maxlength="128"><span class="hint">12 to 128 characters.</span></div>
<div class="field"><label for="f-query">Saved search</label><input id="f-query" type="search" name="query" minlength="3" maxlength="64"></div>
<div class="field"><label for="f-abstract">Abstract</label><textarea id="f-abstract" name="abstract" minlength="40" maxlength="280" rows="4"></textarea><span class="hint">Between 40 and 280 characters.</span></div>
</fieldset>
<fieldset><legend>Exact and open-ended</legend>
<div class="field"><label for="f-country_code">ISO country code</label><input id="f-country_code" type="text" name="country_code" placeholder="GB" pattern="[A-Z]{2}" title="Exactly two capital letters." minlength="2" maxlength="2"></div>
<div class="field"><label for="f-otp">One-time code</label><input id="f-otp" type="text" name="otp" autocomplete="one-time-code" inputmode="numeric" pattern="[0-9]{6}" title="Exactly six digits." minlength="6" maxlength="6"></div>
<div class="field"><label for="f-extension">Phone extension</label><input id="f-extension" type="tel" name="extension" inputmode="tel" maxlength="6"></div>
<div class="field"><label for="f-free_notes">Free notes</label><textarea id="f-free_notes" name="free_notes" maxlength="2000" rows="3"></textarea><span class="hint">Capped at 2000 characters, with no lower bound.</span></div>
</fieldset>
<p class="hint" data-locked="notice">SAMPLE test data only - nothing is submitted, uploaded, or stored.</p>
<div class="ok" role="status">Every value is within its length bounds - nothing was sent.</div>
<div class="actions"><button type="submit" class="btn">Check the lengths</button></div>
</form>
<p class="foot">Free example form from Novus Examples · works offline, no data leaves your browser.</p>
</div></main>
<script>document.querySelectorAll('form').forEach(function(f){f.addEventListener('submit',function(e){e.preventDefault();var hp=f.querySelector('.hp input');if(hp&&hp.value){return;}if(!f.checkValidity()){f.reportValidity();return;}var ok=f.querySelector('.ok');if(ok){ok.style.display='block';ok.scrollIntoView({block:'nearest'});}f.reset();});});</script>
</body>
</html>
Specifications
- Fields
- 8
- Use Case
- software-quality
- Validation
- HTML5 minlength/maxlength
- Honeypot
- true
- Standalone
- true
- Dependencies
- none
- Bounded Controls
- 8
What is a .html file?
HTML (HyperText Markup Language) is the structural markup language of the web, using nested tags to define document content, semantics, and links. It is typically paired with CSS for presentation and JavaScript for behavior. It is the foundational format rendered by browsers.
How to use this file
Use an example HTML file to test parsers, DOM construction, sanitization of untrusted markup, and rendering or scraping pipelines.
How to use this file for testing
“Length-Constraint Matrix (HTML)” is a deterministic Novus Examples fixture for Form testing, Form parsing, Autofill testing, HTML parsing. HTML and PDF form files for testing scrapers, autofill, validators, and PDF form fillers across real-life use cases.
Documented properties for this file: 8 fields. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
This form is fictional SAMPLE content for tooling tests (autofill, scrapers, PDF fillers). It is not an official government, bank, or clinic form. Open the HTML offline or fill the PDF in any viewer; the demo submit path never stores data.
Embed this form
It's a single self-contained HTML file (inlined CSS, native validation, no external requests). Download it, host it on your own site, and drop it into any page with an iframe.
iframe embed
<!-- Download length-constraint-matrix.html, host it on your site, then embed the form anywhere: -->
<iframe
src="/path/to/length-constraint-matrix.html"
title="Length-Constraint Matrix (HTML)"
width="100%"
height="640"
loading="lazy"
style="border:0">
</iframe>Related files
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