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<html><body><form action="/action_page.php"> E-mail: <input type="email" id="myEmail" name="usremail"> <input type="submit"></form><p>Click the "Try it" button to allow multiple values (emails) for the email field on form submission.</p><p><strong>Tip:</strong> Try to type in more than one email before and after you have clicked on the "Try it" button. Separate each email with a comma, like: mail@example.com, mail2@example.com.</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction() { document.getElementById("myEmail").multiple = true; document.getElementById("demo").innerHTML = "The email field now accept multiple values.";}</script></body></html>