Guidance Needed.,

I have an input box that's 200px long in a php form. There's no room in the form, to make the input box bigger. Long input in difficult to edit in this small box so I use a word processor to edit long input when I need to.

Is there some way to use JS (or some other approach) to trigger a pop-up that's large enough for easier editing that might even include a spell checker?

If so, how should I begin to think about making this improvement?