What does the pattern attribute do?

Q: What does the pattern attribute do?

The `pattern` attribute in HTML allows you to define a regular expression that the input value must match before the form can be submitted. It’s commonly used for custom validation rules beyond what built-in input types provide. Works with text-based inputs like `text`, `email`, `password`, and `search`. The value must match the regex pattern for the form to submit successfully. If the value doesn’t match, the browser prevents submission and shows an error message. The `title` attribute can be used alongside `pattern` to provide a helpful hint about the required format. PIN Code: Name: Username: Submit

Difficulty: 4/10

form validation, HTML5 attributes, regex patterns

Using the pattern Attribute in HTML

The pattern attribute in HTML allows you to define a regular expression that the input value must match before the form can be submitted. It’s commonly used for custom validation rules beyond what built-in input types provide.

Key Points About pattern

1
Works with text-based inputs like text, email, password, and search.
2
The value must match the regex pattern for the form to submit successfully.
3
If the value doesn’t match, the browser prevents submission and shows an error message.
4

Example of pattern Usage

Scenario Questions

0-2 years experience

Follow-up Questions