JS- onsubmit()

<!DOCTYPE html>
<html>
  <body>

  <p>When you submit the form, a function is triggered which alerts some text.</p>

  <form onsubmit="myFunction()">
    Enter name:
    <input type="text" name="fname">
    <input type="submit" value="Submit">
  </form>

  <script>
    function myFunction() {
      alert("The form was submitted");
    }
  </script>

  </body>
</html>