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11

Basic HTML Forms: `label`, `input` and Native Validation

Build clearer and more accessible forms with the right input types, associated labels and basic native validation before adding any JavaScript.

How much do you know about HTML?

📘 Theory

The Core Pattern of a Usable Form

If the user is unsure what to write, the form usually needs better markup.

1

Each field should have a label connected through `for` and `id`. That improves clarity and accessibility.

2

Choose input types based on the real data you expect: `email`, `password`, `tel`, `number` and so on.

Native Validation Before JavaScript

HTML already provides a surprisingly useful first layer of validation.

  • Use `required` for mandatory fields.
  • Use `type="email"` for email addresses.
  • Use `minlength` when a field needs a minimum size.
  • Do not rely on placeholder text as a substitute for labels.

🧪 Learn by doing

Example Guided Example: A Small Sign-Up Form Review the structure of labels, ids, names and native validation together.
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🏁 Challenges

Challenge Challenge: Make the Name Field Required Add the minimum validation needed to avoid empty submissions.
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🧰 Resources

Useful links

MDN: Your first web form MDN: <label> MDN HTML MDN HTML Elementos
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Lesson 10
Images: `src`, `alt` and Responsive Basics
Lesson 12
HTML Tables: Structured and Accessible Data
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What is this?

I'm Cristian Eslava and I sometimes build websites so both you and I can learn and experiment. culTest

I made this in February 2026 to make learning easier for my students. The idea is to learn web development by practicing and to keep expanding the project with new topics, tests and challenges.

It draws inspiration from MDN, W3Schools, CodePen, Manz and many other web development references. I wanted to combine useful theory, runnable examples, challenges and the testing system I had already built for culTest. culTest

If you liked it, if you didn't, or if you want to get in touch, write to me at cristianeslava@gmail.com