Data Validation

• Required fields
• Emails
• Numbers
• Dates

To add data validation, simply add required behind input field

Ex:

<form>
  <input type="text" required />
  <button type="submit">submit</button>
</form>

Additionally, you can set min-length or max-length to set the length:

Ex:

<form>
  <input type="text" required minlength="3" maxlength="10" />
  <!-- min & max to control number field -->
  <input type="number" required min="3" max="10" />
  <button type="submit">submit</button>
</form>