Active Word Count

Hi all!

Could anyone help me with the java needed to show word count AS the user types in an essay question? I was able to get this together for when the learner selects submit and if they don't haven't met the minimum - it will display their count. But my client wants this to be displayed as the learner types - adding and subtracting as the learner types in their answer. 

Is that even possible with storyline? Or does the cursor need to lose focus?