Missing Course Material

Dear Teacher

We have been given the following assignment:
Write a JavaScript code to perform following operations,
- String concatenation.
- Reverse of a string and check whether it is palindrome or not.
- Simple basic calculator(Addition,Subtraction,Multiplication,Division). Do proper validation.

Nowhere in the course material do I find anything relating to this? Please tell me where in the course material I can find the information required to be able to write this script?

Thanks

I think the course material doesn't provide any information about how to Reverse a string and check whether it is palindrome or not. for other two questions, you can get some hint from this section of course material.

No,you have to write the code for it,there is no availability of code in this material,if you post your mail id i can send you code