Envision Financial Systems interview question

Interview Questions 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. synchronous and asynchronousstatementswith eg. 9. API calls 10.opps concepts 11.difference between var and let 12. difference between == to === 13. how to add a property in object 14. value and reference in JS Round 2 1.SPA 2. Family background 3. project explanation round 3 1. what so you know about envision 2.why envision I don't remember the rest but more about their company and regarding the offer