● What is Ecmascript in Javascript
● What is difference between let ,cons and var
● What is spread operator, Rest operator ,
default parameter
● What is deep copy and shallow copy in
Javascript
● What is promise , callback function , async await
in in Javascript
● What is difference between promise and
callback in Javascript
● What is event bubbling and event capturing in
Javascript
● What is higher order function in Javascript
● Explain different-2 types of function in Javascript
● What is arrow function in Javascript
● Why we use call, apply bind method in
Javascript
● How many way to create object in Javascript
● What is prototype inheritance in Javascript
● What is typescript
● What are the array method , string method
● What is difference between java and javascript
● What is throttling and debouncing in js
● What is Null and undefined in javascript
● What are the falsy values in javascript
● What is execution context, event loop ,stack,
call queue,microtask queue in Javascript
● What is setTimeOut and setInterval in Javascript
● What is object.seal and object.freeze in
Javascript
● What is difference between map and set in
Javascript
● What is Weakmap and Weakset in Javascript
● What is sessionStorage, localStorage , cookie,
● Write a program to sort an array
● What is use of json.stringify and json parse()
method in Javascript
● What are is map, filter , reducer in javascript
● What is generator function in Javascript
● How to stop event propagation in Javascript
● What is closure in Javascript
● What is housing in Javascript
● What is dead zone in Javascript
● What is function currying in Javascript
● What is mutation observer in Javascript
● What is memorization in javascript
What is difference between css and css3
● What are the selector in css
● What is media query in css
● What is different position in css
● What is bom in css
● What is difference between PX,unit,em,rem in
css
● What is flex box in css
● What is pseudo selector in css
● How to make website responsive
● What are breakpoint for viewport responsive
device
● Why we use box-sizing in css
