Java script not working

Question

I have two custom fields.One select field .I need one description field to be filled if answe is No

Nic Brough -Adaptavist- · Answer

Have you tried Adrien's suggestions yet?  Repeating the question is of no help, you need to think through the responses you get and respond to them with more information.

sasis · Answer

Hi,

Thanks for looking.

I have a select list with yes or No that is FeatureToggle .My requirement is if user selects no he should give expalanation.So i created another field which is a text field.I need this mandatory/fill if he selects no.

Kindly help

sasis · Answer

is this script correct.Its not working after adding it.Also i added in here custom fields---)right click ---)configure ---)description.

please advise.Als advise if there is anyother script for the requirement