Tryit Editor v2.7

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<form action="form_action.asp">
  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><strong>Note:</strong> input elements with type="email" are not supported in IE 9 (and earlier), or Safari.</p>

<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>