How to add HTML <input> pattern Attribute
An HTML form with an input field that can contain only three letters (no numbers or special characters).
Definition and Usage
The pattern attribute specifies a regular expression that the <input> element's value is checked against on form submission.
Note: The pattern attribute works with the following input types: text, date, search, url, tel, email, and password.
Tip: Use the global title attribute to describe the pattern to help the user.
Tip: Learn more about regular expressions in our JavaScript tutorial.
Browser Support
The numbers in the table specify the first browser version that fully supports the attribute.
Syntax
<input pattern="regexp">
Attribute Values
| Value | Description |
|---|---|
| regexp | Specifies a regular expression that the <input> element's value is checked against |
index.html
Example:
HTML
<form action="/action_page.php">
<label for="country_code">Country code:</label>
<input type="text" id="country_code" name="country_code"
pattern="[A-Za-z]{3}" title="Three letter country code"><br><br>
<input type="submit">
</form> Output should be:
Type: | html |
Category: | Web Tutorial |
Sub Category: | HTML Tag |
Uploaded by: | Admin |