Character Counts in Text box

Is there a way to get a logical result from a character count in a text box? (Ex: hidden: input6.characterCount<50)

I have noticed that some of my students skip entering text into text boxes and just hit submit so they can see the solution (then going back and filling in an answer). I want to prevent them from doing this before they have made some sort of effort (as measured by the number of characters they have entered into the text box. Is this possible?

No, but isBlank( ) is a function you might find useful.