The reason we use .get(0) after selecting a form in jQuery (like $('form').get(0).reset()) is because:

・jQuery selectors return a jQuery object, which is a wrapper around the DOM elements.

・The reset() method is a native JavaScript method that exists on DOM elements (specifically the element).

・.get(index) is a jQuery method that retrieves the DOM element at the specified index from the jQuery object. get(0) gets the first (and usually the only) form element as a plain JavaScript DOM element. Therefore, $('form').get(0) extracts the underlying DOM element of the form, allowing you to call the native JavaScript reset() method on it. jQuery objects themselves don't have a reset() method.

Regarding your experience with beforeSend and reset(), if reset() worked there, it means that within that context, the form variable was likely referencing the native DOM element (either directly or after extraction from a jQuery object).