Hi @ramadheer ,

Can you describe the scenario more. 

1. You need the functionality in native or portal? 

2. If its service portal then is it a custom page? 

3. Export needs to be done from list view or form view?

I think the above info will be required to solution the issue you are facing. 

I hope the response is helpful in order for you to proceed. 

Please mark the answer helpful and correct if it helps the issue. Happy scripting 🙂

-Shantanu