The easiest way to submit a form using JavaScript is by using HTMLFormElement.submit() method. This method does something similar to activating a submit button of the form.
If a form control (such as a submit button) has a name or id of submit it will mask the form’s submit method.
Syntax to Submit a Form using JavaScript
HTMLFormElement.submit() //HTMLFormElement is nothing but your formObject
Example to Submit a form using JavScript
<form name="myform" class="myform" action="mail.php"> Your name:<br> <input type="text" name="myform-name"><br> <button type="submit">Submit</button> </form> <script type="text/javascript">document.myform.submit();</script>
Alternatively, you could also use document.getElementById("myForm").submit();
Similarly, you could use document.getElementsByClassName("myForm_classname").submit(); to submit form using class name and document.getElementsByTagName("form").submit(); incase if you would like to submit form using tag name.
The submit() method submits the form (same as clicking the Submit button).
Srinivas Ramakrishna
