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<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="https://www.w3schools.com/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><strong>Note:</strong> elements with type="url" are not supported in IE 9 (and earlier), or Safari.</p><p id="demo"></p><script>function myFunction() { var x = document.getElementById("myURL").pattern; document.getElementById("demo").innerHTML = x;}</script></body><!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_url_pattern by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 18:16:56 GMT --></html>