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<!DOCTYPE html> <html> <body> Homepage: <input type="url" id="myURL" value="http://www.google.com"> <p>Click the button to change the default value of the URL field.</p> <button type="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> <script> function myFunction() { document.getElementById("myURL").defaultValue = "http://www.cnn.com"; } </script> </body> </html>