Unselect the check mark I want it to go back to being blank. Is there code for that?

[akinary]

Hi,

I am creating a form for a lesson plan.  I have a field that when the checkbox is clicked it will fill the content in other text boxes. However, when unelecting the check mark it leaves the filled content. If I unselect the check mark I want it to go back to being blank. Is there code for that? 

[akinary]

The code I am currently using:

if (event.target.value!="Off")

this.getField("Text5").value=this.getField("Text3").value;

[Bernd Alheit]

Add this:

else this.getField("Text5").value = "";

[try67]

Be aware that if the user changes the value of Text3 after having ticked the check-box, Text5 won't update with it, and will still show the previous value.