In the past we’ve covered adding +/- buttons to number-based inputs to help user interface (it’s easier than typing in some circumstances). Reader Hitesh N Chavda emailed me with the idea of doing it with the scroll of the mouse wheel instead.

With the mouse cursor inside the input box, you can use the mouse scroll wheel to increment the number up and down.

Hitesh worked up a technique for doing it using jQuery, which works great. Then later he found a plugin which has already been built for dealing with mousewheel events, which is really nice and simplifies things. Just for fun the demo will leave both versions in it.

via Increment Inputs with the Mousewheel | CSS-Tricks.