Do not use submit to name a submit button

Given a form element, we often call the submit() method to submit the form after validating its fields.
If the submit button of the form has either name="submit" or id="submit" attribute, then formEle.submit will return the submit button instance. As a result, formEle.submit() throws an exception because it's not an actual function anymore.
We can face the similar issue when using special properties of form such as reset, length, method.
<!-- Do NOT -->
<button type="submit" name="submit">Submit</button>
<button type="submit" id="submit">Submit</button>
<!-- Do -->
<button type="submit" name="submitButton">Submit</button>

See also