Authentication Forms — Complete Guide
Authentication Forms — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of HTML Tutorial on Toolliyo Academy.
On this page
HTML Tutorial · Lesson 29 of 100
Authentication Forms
Basics ✓ → Forms & semantics → APIs & performance → Projects
Forms & semantics · 2 — Forms, SEO, a11y · ~6 min · HTML — Forms & Validation
What is this?
Login/signup forms use correct autocomplete, password types, and POST — never put secrets in the URL.
Why should you care?
MarkupVerse auth pages must help password managers and resist shoulder-surfing leaks in GET.
See it live — copy this example
Save as demo.html and open in your browser, or use Run Example below.
<form action="/login" method="post" autocomplete="on">
<label>Email <input type="email" name="email" autocomplete="username" required></label>
<label>Password <input type="password" name="password" autocomplete="current-password" required></label>
<button type="submit">Sign in</button>
</form>Run Example »
Edit the code below and click Run to see the result in Toolliyo’s live editor.
What happened?
- autocomplete="username" + current-password helps managers.
- method="post".
- Separate “forgot password” link.
Practice next
- Build login form.
- POST method.
- autocomplete tokens.
- Add autocomplete="new-password" on signup.
- Show/hide password button later.
Remember
POST auth. password type. PM-friendly autocomplete.
MarkupVerse sign-in
Login posts email/password.
Outcome: Password managers fill correctly.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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