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<!DOCTYPE html> <html> <body> <p>A form with a URL field that must start with http:// or https:// followed by at least one character:</p> <form action="/action_page.php"> Homepage: <input type="url" id="myURL" name="website" pattern="https?://.+" title="Include http://"> <input type="submit"> </form> <p>Click the "Try it" button to display the value of the pattern attribute of the URL field.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { let x = document.getElementById("myURL").pattern; document.getElementById("demo").innerHTML = x; } </script> </body> </html>
