I am trying to implement a solution where on a catalog item there is html field. Users have to fill atleast 300 characters of it. Now I have a requirement where as user types number of characters left is counted and displayed to user.  

I am trying to create a catalog items with some HTML fields with restriction  of 300 characters minimum. Now I need to implement a character counter which tells users how many characters they have filled. could you please help me how to achieve this ...

I have a field on case (sn_customerservice_case) now I want to give users ability to perform global search on that field , please provide me the steps how to do this.

Is there a way we can call business from the script include.