To fix "Submit is not a function" error in JavaScript, we should make sure we call submit on a form element.
For instance, we write
<form
action="product.php"
method="post"
name="frmProduct"
id="frmProduct"
enctype="multipart/form-data"
>
<input id="submitValue" type="button" name="submitValue" value="" />
</form>
to add a form with a submit button inside.
Then we write
const submitAction = () => {
document.getElementById("frmProduct").submit();
return false;
};
document.getElementById("submitValue").onclick = submitAction;
to select the button with getElementById.
We set its onclick property to the submitAction function.
In submitAction, we select the form with getElementById and call submit on the form.
Then we return false to stop the default submit behavior.
onclick only runs when we click on the button.
