Incedo Angular Developer interview questions

1) let var and const difference 2) What are closures in js? 3) difference between == and === 4) what is the difference between Map and Foreach 5) what is a temporial deadzone? 6) what are IIFE in JavaScript? 7) difference between call and bind method? 8) what are directives in angular? 9) difference between switch map and merge map 10) what are observables 11) what are behavior subjects, 12)difference between subject and behavior subject? 13) what is a replay subject 14) difference between view child and view children? 15) what are signals? 16) what are the difference between local and session storage? 17) different sematic elements introduced in html 5? 18) How do you handle accessibility in angular?