How to show message in model body if bootstrap model have no data in jquery

Question

I'm trying to display a text message in bootstrap model body if no data available in model. but it's not working to me any one can pls help on it. actually here i have some cards on model if i click on skip or done buttons every card will close and on the other hand if model have only one card when I hit on the skip or done buttons model will close automatically. but i am not able to display the text in model body .