How can I get form data with JavaScript/jQuery?

Question

Is there a simple, one-line way to get the data of a form as it would be if it was to be submitted in the classic HTML-only way?

For example:

Answer 1

$("#form input, #form select, #form textarea").each(function() {
 data[theFieldName] = theFieldValue;
});

other than that, you might want to look at serialize();