Fluid Typing 介绍
A plugin that allows multiple input elements to be treated as one when typing.
For example, if you have social security number split among three input
elements, this plugin would allow the user to click in the first element and
type the full social security number. The cursor will automatically move
forward when an element is full (based on the element’s maxlength) and will
automatically move backward if the current element is empty and the user
presses the backspace key.