How to run An HTML form with an input field that can contain only three letters (no numbers or special characters) - HTML pattern Attribute

Input Example. The input pattern attribute. Note: The pattern attribute of the input tag is not supported in Safari 10 (or earlier).

index.html

Example: HTML

<!DOCTYPE html>
<html>
<body>

<h1>The input pattern attribute</h1>

<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>

<p><strong>Note:</strong> The pattern attribute of the input tag is not supported in Safari 10 (or earlier).</p>

</body>
</html>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Attribute
Uploaded by:	Admin