Envision Financial Systems interview question

1. Primitive and non-primitive datatypes 2. Local and session storage 3. authentication and authorization 4. bootstrap grid system 5. instanceOf 6. prototypes 7. array methods 8. html tags 9. java and bootstrap o/p 10. event bubbling and capturing 11. event delegation 12. API calls 13. delete operator in JS 14. value and reference in JS 15. convert to JSON 16. index 17. shift and unshift 18. splice and slice