JAVASCRIPT INTERVIEW QUESTIONS (ONLY)
Soumitya Chauhan
Q.What is JavaScript?
Q. hosting
Q.what is higher Order function?
Q. event loop ?
Q.splice() vs Slice()
Q.what is NaN?
Q.Undefined and Null
Q anonymous function
Q. what is teranary operator ?
Q what is callback ?
Q What is the difference between Local storage & Session storage?
Q.Define closure.
Q How can you create an object in JavaScript?
Q.What is Data Type?
Q.let and const and var
Q. console.log('5'+5);
Q.console.log('5'-5)
Q.Difference between “==” and “===” operators.
Gaurav
Q. Explain the complete execution in javascript?
Q. Event Loop ?
Q. Call Stack?
Q. CallBack Functions: definition, intenal working & diff between promise & callBack functions
Q. what is promise write its code for exanmple & tell different Promises Functions like promise.All, promise.allSettled() etc.
"Q. Transfrom this array using recursion in javascript:
Gievn array
arr=[1,2,[3,4,[5,6]]];
output array:
arr=[1,2,3,4,5,6]"
Rahul Kumar Yadav
"1) Given an input string, return the string which is a character count.
Example:
Input: “ABABBCDCCC”
Output: “A2B3C4D1”"
2) Difference between “==” and “===” operators.
3) What are the different data types present in javascript?
4) What is NaN property in JavaScript?
5) Explain call(), apply() and bind() methods.
6) What is the use of a constructor function in javascript?
7) What would be the result of 3+2+”7″?
8) What would be the result of ~8?
9) What is JavaScript ‘Strict Mode’?
Desh Chatterjee
datatypes in js
how to check type of a variable
functional scope & block scope
what is NaN
how to reverse a string using JS
let and const concept
declare simple array & object
map vs foreach
remove duplicates from array
| Q.What is JavaScript? | soumitya chauhan |
| Q. hosting | soumitya chauhan |
| Q.what is higher Order function? | soumitya chauhan |
| Q. event loop ? | soumitya chauhan |
| Q.splice() vs Slice() | soumitya chauhan |
| Q.what is NaN? | soumitya chauhan |
| Q.Undefined and Null | soumitya chauhan |
| Q anonymous function | soumitya chauhan |
| Q. what is teranary operator ? | soumitya chauhan |
| Q what is callback ? | soumitya chauhan |
| Q What is the difference between Local storage & Session storage? | soumitya chauhan |
| Q.Define closure. | soumitya chauhan |
| Q How can you create an object in JavaScript? | soumitya chauhan |
| Q.What is Data Type? | soumitya chauhan |
| Q.let and const and var | soumitya chauhan |
| Q. console.log('5'+5); | soumitya chauhan |
| Q.console.log('5'-5) | soumitya chauhan |
| Q.Difference between “==” and “===” operators. | soumitya chauhan |
| Q. Explain the complete execution in javascript? | Gaurav |
| Q. Event Loop ? | |
| Q. Call Stack? | |
| Q. CallBack Functions: definition, intenal working & diff between promise & callBack functions | |
| Q. what is promise write its code for exanmple & tell different Promises Functions like promise.All, promise.allSettled() etc. | |
| Q. Transfrom this array using recursion in javascript: Gievn array arr=[1,2,[3,4,[5,6]]]; output array: arr=[1,2,3,4,5,6] | |
| what is js?datatypes in JS?null and defined?let var & const?hoisting?arrow functions?this key word?anonymous function?IIFES? clousers? == & ===?Coercion? | vamshree krishna Etukri |
| 1) Given an input string, return the string which is a character count. Example: Input: “ABABBCDCCC” Output: “A2B3C4D1” | Rahul Kumar Yadav |
| 2) Difference between “==” and “===” operators. | Rahul Kumar Yadav |
| 3) What are the different data types present in javascript? | Rahul Kumar Yadav |
| 4) What is NaN property in JavaScript? | Rahul Kumar Yadav |
| 5) Explain call(), apply() and bind() methods. | Rahul Kumar Yadav |
| 6) What is the use of a constructor function in javascript? | Rahul Kumar Yadav |
| 7) What would be the result of 3+2+”7″? | Rahul Kumar Yadav |
| 8) What would be the result of ~8? | Rahul Kumar Yadav |
| 9) What is JavaScript ‘Strict Mode’? | Rahul Kumar Yadav |
| Problem1: var y = 1; if (function f() {}) { y += typeof f; } console.log(y); | Rahul Kumar Yadav |
| 11) Problem2: (function() { var a = b = 5; })(); console.log(b); | Rahul Kumar Yadav |
| datatypes in js | Desh Chatterjee |
| how to check type of a variable | Desh Chatterjee |
| functional scope & block scope | Desh Chatterjee |
| what is NaN | Desh Chatterjee |
| how to reverse a string using JS | Desh Chatterjee |
| let and const concept | Desh Chatterjee |
| declare simple array & object | Desh Chatterjee |
| map vs foreach | Desh Chatterjee |
| remove duplicates from array | Desh Chatterjee |
| 1. What is Javascript? | Mechate Lavanyasai Kumar |
| 2. What are the features of Javascript? | Mechate Lavanyasai Kumar |
| 3. Var, let, and const | Mechate Lavanyasai Kumar |
| 4. Hoisting | Mechate Lavanyasai Kumar |
| 5. InnerText vs InnerHTML | Mechate Lavanyasai Kumar |
| 6. Promises | Mechate Lavanyasai Kumar |
| 7. Map vs ForEach | Mechate Lavanyasai Kumar |
| 8. Async vs Sync | Mechate Lavanyasai Kumar |
| 9. Create a form with three input fields, Name, Email Id, and Mobile. | Mechate Lavanyasai Kumar |
| When the user submits the form, he should see an alert box with the | |
| name, email, and mobile number he entered in the form. | |
| 1. Brief about JavaScript --- not answered. | K Madhu |
| 2. what is a variable in js ? let var, const keywords --- not answered. | K Madhu |
| 3. Primitive and nonprimitive data types --- partially answered. | K Madhu |
| 4. what are === and == --- not answered. | K Madhu |
| 5. typeof() in js --- not answered. | K Madhu |
| 6. what are function expression and function declaration? --- not answered. | K Madhu |
| 7. what is an anchor tag in HTML --- answered. | K Madhu |
| 8. logical Operators in js --- answered. | K Madhu |
| 9. Strict Mode in js --- not answered. | K Madhu |
| 10. the difference between null and undefined --- | K Madhu |
| not answered. | K Madhu |
| 11. Ternary Operators in js --- partially answered. | K Madhu |
| 12. the switch statement in js --- answered. | K Madhu |
| 13. for and while loop --- answered. | K Madhu |
| 15. can we place the script tag in the body tag? --- not answered. | K Madhu |
| 16. What is the ‘class’ attribute in HTML? --- answered. | K Madhu |
| 17. What is the ‘id’ attribute in HTML? --- answered. | K Madhu |
| 18. CSS box model properties --- not answered. | K Madhu |
| 19. margin properties --- not answered. | K Madhu |
| 20. which tags make text bold and italic --- answered. | K Madhu |
| 21. how many types of lists in HTML --- answered | K Madhu |
| What are the different data types present in javascript? | deepti-rathor js(Esay) |
| Explain Hoisting in javascript. | deepti-rathor js(Esay) |
| (1) functionDeclaration() | deepti-rathor js(Esay) |
| function functionDeclaration() { | deepti-rathor js(Esay) |
| console.log('Hoisted') | deepti-rathor js(Esay) |
| } | deepti-rathor js(Esay) |
| (2)function functionDeclaration() { | deepti-rathor js(Esay) |
| console.log('Hoisted') | deepti-rathor js(Esay) |
| 6 | deepti-rathor js(Esay) |
| functionDeclaration() | deepti-rathor js(Esay) |
| deepti-rathor js(Esay) | |
| Difference between “==” and “===” operators. | deepti-rathor js(Esay) |
| What is the difference between null and undefined | deepti-rathor js(Esay) |
| What is an Immediately Invoked Function in javascript? | deepti-rathor js(Esay) |
| Write IIFE function | deepti-rathor js(Esay) |
| What is the ‘Strict Mode in JavaScript, and how can it be enabled? | deepti-rathor js(Esay) |
| given an array [1,2,3,4,5], multiply it by 3 and return a new array | deepti-rathor js(Esay) |
| apply the filter method in an array | deepti-rathor js(Esay) |
| what are events in js | deepti-rathor js(Esay) |
| different ways to attach js code in HTML file | deepti-rathor js(Esay) |
| what are import and export | deepti-rathor js(Esay) |
| what are ES6 and its features | deepti-rathor js(Esay) |
| What is closure in javascript? | deepti-rathor js(Esay) |
| what is JS?data types in JS?null and undefined?let var and const?== & ===?coersion? hoisting?clousers?IIFES?arrow function?this keyword? | Vamshree Krishna Etukuri |
| Difference betweeen null and undefined in JS? (clearly answered for null) | Anand prakash |
| . Benefits of declaring a variable as null? (answered correctly) | Anand prakash |
| . What is hoisting in JS? Explain with example code?(satisfied with answer) | Anand prakash |
| . Scope in javascript? Difference between let, var and const? (Answered somewhat correct) | Anand prakash |
| . What is Closure in JS? Explain with example code?(not answered properly) | Anand prakash |
| . Write a parent function that accepts a callback function as parameter. | Anand prakash |
| . Write a fetch function in JS to get a JSON and show it in response.(not answered) | Anand prakash |
| . What are cookies? What are sessions? | Anand prakash |
| . What is DOM? What is DOM tree? (Not answered properly) | Anand prakash |
| . What are callback functions? (not answered upto the satisfaction) | Annad prakash |
| . What is promises in JS? (not answered completely) | Anand prakash |
| Is JS single or multi threaded? | Abhishek kumar singh |
| What are the different methods to find HTML elements in DOM ? | Abhishek kumar singh |
| What is scope in JS? | Abhishek kumar singh |
| What is the difference between == and === operators? | Abhishek kumar singh |
| What are the different data types in JS? | Abhishek kumar singh |
| What is the difference between let and var ? | Abhishek kumar singh |
| What is Dom ? | Abhishek kumar singh |
| What will be the output for below code: | Abhishek kumar singh |
| console.log( "5" - 5); | Abhishek kumar singh |
| console.log( "5" + 5); | Abhishek kumar singh |
Abhishek kumar singh | |
| Name some built in Array and String functions. | Abhishek kumar singh |
| What is setTimeout? Write syntax for it. | Abhishek kumar singh |
| What is a callback function? | Abhishek kumar singh |
| ) Brief Intro about yourself. | Nishit Tated |
| 2) Any projects you have worked on, demonstrating your major skills? | Nishit Tated |
| 3) What are the different ways to define a variable? Explain them briefly | Nishit Tated |
| 4) Difference between "==" and "===" operator's | Nishit Tated |
| 5) What is a DOM? | Nishit Tated |
| 6) How "this" keyword works in JS? - | Nishit Tated |
| 7) Explain hoisting | Nishit Tated |
| 8) Explain closure | Nishit Tated |
| 9) Explain pass by value and pass by reference | Nishit Tated |
| 10) What are the pros and cons of for loop? | Nishit Tated |
| 11) What are the differences between while and do-while loops in JS? | Nishit Tated |
| 12) What are the differences between undeclared and undefined variables? | Nishit Tated |
| 13) Write a JS program to find duplicate values in an array | Nishit Tated |
| 1.what are scemantic elements? | Sunetra Das |
| 2. What are some of the new input types in HTML5? | Sunetra Das |
| 3.What is JavaScript? | Sunetra Das |
| 4.Is JavaScript statically typed or dynamically typed? | Sunetra Das |
| 5.Difference between let and var. | Sunetra Das |
| 6.What are the different data types present in JavaScript? | Sunetra Das |
| 7.Explain scope chain. | Sunetra Das |
| 8.var a ={ | Sunetra Das |
| first:"Subham", | Sunetra Das |
| last:"Pandey", | Sunetra Das |
| age:"20", | Sunetra Das |
| profession:"developer" | Sunetra Das |
| } | Sunetra Das |
| how can you change profession value to "engineer". | Sunetra Das |
| 9.What do you mean by hoisting. Is let and const also hoisted? | Sunetra Das |
| 10.What is the difference between == and === operators | Sunetra Das |
| 11.Convert String to an array. Ex."hello" to ["h","e","l","l","o"] | Sunetra Das |
| 12.What is closure.Write an example. | Sunetra Das |
| 1) Brief Intro about yourself. | Nishit Tated |
| 2) Any projects you have worked on, demonstrating your major skills? | Nishit Tated |
| 3) What are the different ways to define a variable? Explain them briefly | Nishit Tated |
| 4) Difference between "==" and "===" operators | Nishit Tated |
| 5) What is a DOM? | Nishit Tated |
| 6) What is CSS and how does it work with HTML? | Nishit Tated |
| 7) What are the advantages of CSS? | Nishit Tated |
| 8) What are the limitations of CSS? | Nishit Tated |
| 9) What are the advantages of External Style Sheets? | Nishit Tated |
| 10) What are the advantages of Embedded Style Sheets? | Nishit Tated |
| 11) What do you mean by a markup language? | Nishit Tated |
| 12) Difference between tags vs attributes vs elements | Nishit Tated |
| 13) What is the meaning of <DOCTYPE html>? | Nishit Tated |
| 14) Difference between div tag and span tag | Nishit Tated |
| 15) What are some common lists that are used when designing a page? | Nishit Tated |
| 16) Write a JS program to find duplicate values in an array | Nishit Tated |
| 1. What is Javascript? | Mechate Lavanyasai Kumar |
| 2. What are the features of Javascript? | Mechate Lavanyasai Kumar |
| 3. Var, let, and const | Mechate Lavanyasai Kumar |
| 4. Hoisting | Mechate Lavanyasai Kumar |
| 5. InnerText vs InnerHTML | Mechate Lavanyasai Kumar |
| 6. Promises | Mechate Lavanyasai Kumar |
| 7. Map vs ForEach | Mechate Lavanyasai Kumar |
| 8. Async vs Sync | Mechate Lavanyasai Kumar |
| 9. Create a form with three input fields, Name, Email Id, and Mobile. | Mechate Lavanyasai Kumar |
| When the user submits the form, he should see an alert box with the | Mechate Lavanyasai Kumar |
| name, email, and mobile number he entered in the form. | Mechate Lavanyasai Kumar |
Himanshu Manu Udhwani | |
| - Difference between tags and attribute | Himanshu Manu Udhwani |
| - Difference between ID and class selector | Himanshu Manu Udhwani |
| - What is difference div and span ? | Himanshu Manu Udhwani |
| - What is DOM ? | Himanshu Manu Udhwani |
| - Explain Box Model | Himanshu Manu Udhwani |
| - What are the limitations of CSS? | Himanshu Manu Udhwani |
| - What are the different ways to add CSS in program | Himanshu Manu Udhwani |
| - Explain the term Responsive web design | Himanshu Manu Udhwani |
| - What is JS ? | Himanshu Manu Udhwani |
| - What are the different data types present in javascript? | Himanshu Manu Udhwani |
| - Difference between Let Var and Const. | Himanshu Manu Udhwani |
| - Explain Hoisting in javascript. | Himanshu Manu Udhwani |
| - What is the Output of for(var i=0;i<10;i++) { } console.log(i); | Himanshu Manu Udhwani |
| - Explain Implicit Type Coercion in javascript. | Himanshu Manu Udhwani |
Himanshu Manu Udhwani | |
| - What is the output. var x = 3; var y = "3"; x - y ?- | Himanshu Manu Udhwani |
| - What is an Immediately Invoked Function in javascript? | Himanshu Manu Udhwani |
| - What are closures. | Himanshu Manu Udhwani |
| - What is HTML | Himanshu Manu Udhwani |
| JS | |
| - What is JS ? | Chintamani Meher |
| [Partially Answered] | Chintamani Meher |
| Chintamani Meher | |
| - What are the different data types present in javascript? | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - Difference between Let Var and Const | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - Explain Hoisting in javascript. | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - What is the Output of for(var i=0;i<10;i++) { } console.log(i); | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - Explain Implicit Type Coercion in javascript. | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - What is the output. var x = 3; var y = "3"; x - y ? | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - What is an Immediately Invoked Function in javascript? | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - What are closures. | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| - What is the difference between Arrow function and normal function ? | Chintamani Meher |
| [Not Answered] | Chintamani Meher |
| Chintamani Meher | |
| Chintamani Meher | |
| HTML | Chintamani Meher |
| JavaScript Syntax | Chintamani Meher |
| Datatypes & Variables | Chintamani Meher |
| Scope | Chintamani Meher |
| Function | Chintamani Meher |
| Popups | Chintamani Meher |
| Date | Chintamani Meher |
| Array | Chintamani Meher |
| Loops | Chintamani Meher |
| Operators | Chintamani Meher |
| Chintamani Meher | |
| CSS Selectors | Chintamani Meher |
| CSS Properties | Chintamani Meher |
| CSS Applying Style | Chintamani Meher |
| - What do you know all about JavaScript? : partially answered | Sandip Jha |
| Sandip Jha | |
| -What is Closure. Write a sample code in Closure? : partially answered. | Sandip Jha |
| - var a; | Sandip Jha |
| console.log(a); | Sandip Jha |
| a = 5; answered | Sandip Jha |
| -What is Hoisting? How does hoisting work? answered | Sandip Jha |
| -Difference between let, var, and const keyword. answered | Sandip Jha |
| - const a = 7; | Sandip Jha |
| a = 6; | Sandip Jha |
| console.log(a) : not answered | Sandip Jha |
| ---------------------------------------------- | Sandip Jha |
| function greet() { | Sandip Jha |
| b = 'hello'; | Sandip Jha |
| console.log(b); | Sandip Jha |
| var b; | Sandip Jha |
| } | Sandip Jha |
| greet(); | Sandip Jha |
| console.log(b); | Sandip Jha |
| Sandip Jha | |
| answered | Sandip Jha |
| ------------------------------------------------ | Sandip Jha |
| Sandip Jha | |
| - == vs === answered | Sandip Jha |
| Sandip Jha | |
| console.log(false == '0') | Sandip Jha |
| console.log(false === '0') : answered | Sandip Jha |
| Sandip Jha | |
| - What is Shadowing?; not answered | Sandip Jha |
| Sandip Jha | |
| - slice vs splice: partially answered | Sandip Jha |
| Sandip Jha | |
| - shift vs unshift:not answered | Sandip Jha |
| Sandip Jha | |
| -What are the types of pop-ups available in JavaScript. | Sandip Jha |
| - print the reverse of a string using JS methods. : | Sandip Jha |
| 1. Difference between let, var and const | Arpit Goel |
| 2. Difference between == and === | Arpit Goel |
| 3. Output question | Arpit Goel |
| console.log (2 == '2') | Arpit Goel |
| console.log (2 === '2') | Arpit Goel |
| 4. Explain map function and filter function in javascript | Arpit Goel |
| 5.What is hoisting in JS ? | Arpit Goel |
| 6. What are closures in JS ? | Arpit Goel |
| 7. What is Arrow function in Javascript | Arpit Goel |
| 8. Use of this keyword in JS | Arpit Goel |
| 9. Output Questions | Arpit Goel |
| console.log ('1' + '2') | Arpit Goel |
| console.log (1 + 2 + '3') | Arpit Goel |
| console.log (1 + 2 + '3' + 4) | Arpit Goel |
| 10. Difference between undefined and null | Arpit Goel |
| 11.What is event loop in JS ? | Arpit Goel |
| 12. What is call stack in JS ? | Arpit Goel |
| 13. What are rest and spread operators in JS ? | Arpit Goel |
| 14 What is use of setTimeout | Arpit Goel |
| 15. What is use of setInterval | Arpit Goel |
| 16. What is callback function in JS ? | Arpit Goel |
| 17. Difference between function declaration and function expression | Arpit Goel |
| 18. What is IIFE | Arpit Goel |
| 19. Difference between call, bind and apply | Arpit Goel |
| 20. Write a code to reverse string | Arpit Goel |
| Sample Input - "I love India" | Arpit Goel |
| Sample Output - "India love I" | Arpit Goel |
| What is js. | Danish Khan |
| - What are the different data types present in javascript? | Danish Khan |
| - let vs var vs const. | Danish Khan |
| - Explain Hoisting in javascript | Danish Khan |
| - Closure in JS. | Danish Khan |
| - console.log( 3 == "3"). | Danish Khan |
| - What will be the output of given code snippet? | Danish Khan |
| var a = 10; var b = "25"; var z1 = a + 10 + 1 + b; var z2 = b + 20 + 1 + a; var z3 = 10 + 10 + a + b; console.log(z1) console.log(z2) console.log(z3) | Danish Khan |
| output for :- var a; console.log(a); a=10; | Danish Khan |
| Task 1 - Write a program to reverse a string without using loops. | Danish Khan |
| Task 2 :- Complete JS challenge :- https://edabit.com/challenge/NHfYRHg2tDtcZyykB | Danish Khan |
| Task 3 :-Complete JS challenge :- https://edabit.com/challenge/yFJzLfYghz7ZtsyAN | Danish Khan |
| What is closure | Rounak Goliya |
| mergeSortedArray([2,5,6,9], [1,2,3,29]); = [1, 2, 2, 3, 5, 6, 9, 29]; | Rounak Goliya |
| check given number is prime or not | Rounak Goliya |
| print all the prime number between 0 to n | Rounak Goliya |
| What are different ways to include script in html? | Vidya Nayak |
| Where should we mention script in html file for performance? | Vidya Nayak |
| What are the ways to create variables in JS? | Vidya Nayak |
| What is the difference between var, let & const? | Vidya Nayak |
| What is “use strict” in JavaScript? | Vidya Nayak |
| What is ECMAScript? | Vidya Nayak |
| What is JavaScript hoisting? | Vidya Nayak |
| What is Closures? | Vidya Nayak |
| What is Promises in JavaScript? | Vidya Nayak |
| What are the stages in promises? | Vidya Nayak |
| Can you write JavaScript code to sort this array? | Vidya Nayak |
| s JS single threaded or multiple threaded? | Abhishek Kumar Singh |
| What is scope in JS? | Abhishek Kumar Singh |
| What is the difference between let and var ? | Abhishek Kumar Singh |
| What are the different methods to find HTML elements in DOM ? | Abhishek Kumar Singh |
| What is the difference between == and === operators? | Abhishek Kumar Singh |
| What are the different data types in JS? | Abhishek Kumar Singh |
| What is Dom ? | Abhishek Kumar Singh |
| What will be the output for below code: | Abhishek Kumar Singh |
| console.log( "5" - 5); | Abhishek Kumar Singh |
| console.log( "5" + 5); | Abhishek Kumar Singh |
| Name some built in Array and String functions. | Abhishek Kumar Singh |
| Write a JS code to reverse a string. | Abhishek Kumar Singh |
| What is setTimeout method? | Abhishek Kumar Singh |
| What is a callback function? Explain with code. | Abhishek Kumar Singh |
| What is the difference between null and undefined?. | Abhishek Kumar Singh |
| What is the output of below code | Abhishek Kumar Singh |
| var myChars = ['a', 'b', 'c', 'd'] | Abhishek Kumar Singh |
| delete myChars[0]; | Abhishek Kumar Singh |
| console.log(myChars); | Abhishek Kumar Singh |
| console.log(myChars[0]); | Abhishek Kumar Singh |
| console.log(myChars.length); | Abhishek Kumar Singh |
| 1: [empty, 'b', 'c', 'd'], empty, 3 | Abhishek Kumar Singh |
| 2: [null, 'b', 'c', 'd'], empty, 3 | Abhishek Kumar Singh |
| 3: [empty, 'b', 'c', 'd'], undefined, 4 | Abhishek Kumar Singh |
| 4: [null, 'b', 'c', 'd'], undefined, 4 | Abhishek Kumar Singh |
| What is IIFE? | Abhishek Kumar Singh |
| Explain slice and splice method. | Abhishek Kumar Singh |
| Difference between forEach and map method? | Abhishek Kumar Singh |
| 1. What is JS, where do we run it, how many threads? 2. ES5 vs ES6 3. let vs var vs const 4. == vs === 5. Closures with example 6. How does JS work and process asynchronous code 7. Callback functions 8. Higher order functions 9. Arrow function vs regular function 10. Settimeout vs setinterval 11. Function to add first 10 or n natural numbers and return result. | Kanishk Kalyani |
| What is this keyword? | Aejit Tripathi |
| Write code to show how this keyword works? | Aejit Tripathi |
| What are the string methods in js? | Aejit Tripathi |
| let x ='2'+2+2 | Aejit Tripathi |
| Create a webpage which include random paragraph. Add two buttons to it. The functionality of buttons should be as follow: | Niharika Nishu |
| Niharika Nishu | |
| onclick first button - the para should hide and show | Niharika Nishu |
| onclick second button - color of para should change | Niharika Nishu |
| 1. Let, Var and Const | dipesh banshal |
| 2. Hoisting | dipesh banshal |
| tell the output a. console.log(a) console.log(b) let a = 10; console.log(a); var b = 100; b. var x =1; a(); b(); console.log(x): function a(){ var x = 10; console.log(x); } function b(){ var x = 100; console.log(x); } | dipesh banshal |
| 3. Closures | dipesh banshal |
| 4. Array Methods | dipesh banshal |
| 5. Event Loop | dipesh banshal |
| w | dipesh banshal |
| . | Prateek Jain |
| What are primitive data types? | Prateek Jain |
| what is the difference between null and undefined? | Prateek Jain |
| What is memoization? | Prateek Jain |
| JAVASCRIPT is a case sensitive or case in-sensitive? | Prateek Jain |
| JAVASCRIPT dynamically types language or statically typed language? | Prateek Jain |
| What is the difference between == and ===? | Prateek Jain |
| What are clousers? | Prateek Jain |
| What is setTimeout() and setTimeInterval()? | Prateek Jain |
| 1.What is JavaScript? | sunetra das |
| 2.Difference between let and var. | sunetra das |
| 3.What are the different data types present in JavaScript? | sunetra das |
| 4.Difference between null and undefined. | sunetra das |
| 5.Print all the values of an object | sunetra das |
| 6.Event in js. | sunetra das |
| 7.Pass by value VS Pass by reference. | sunetra das |
| 8.Hoisting | sunetra das |
| 9.window object. | sunetra das |
| 10.What is arrow function? | sunetra das |
| 11.Sort an array | sunetra das |
| 12.Lexical scope. | sunetra das |
| 13.Synchronous and Asynchronous | sunetra das |
| 14.Check the no is palindrome or not. | sunetra das |
| 15.Clouser. | sunetra das |
| 16.Reverse a string. | sunetra das |
| JS is loosely typed or strictly typed language? | Love Arora |
| Why we use-strict keyword? | Love Arora |
| What is purpose of typeof keyword? | Love Arora |
| Difference between var, let and const? | Love Arora |
| Explain Hoisting? | Love Arora |
| Output of: | Love Arora |
| Love Arora | |
| const a = 10; | Love Arora |
| if(true){ | Love Arora |
| const a = 20; | Love Arora |
| console.log(a); | Love Arora |
| } | Love Arora |
| console.log(a); | Love Arora |
| Love Arora | |
| Difference between == & ===? | Love Arora |
| If(''==0){ | Love Arora |
| console.log("Yes") | Love Arora |
| } | Love Arora |
| let a = new Object("abc"); | Love Arora |
| let b = new String("abc"); | Love Arora |
| if(a==b){ | Love Arora |
| console.log("Yes"); | Love Arora |
| }else{ | Love Arora |
| console.log("No"); | Love Arora |
| } | Love Arora |
| Difference between callback & promise | Love Arora |
| Implement an example of immediate invoke function? | Love Arora |
| Design a form in HTML and fetch the values and print on console? | Love Arora |
| 1. Difference between let, var and const -> correct definition, but not able to answer practical questions | Arpit Goal |
| 2. Difference between == and === -> correct answer | Arpit Goal |
| 3. Output question | Arpit Goal |
| console.log (2 == '2') -> correct answer | Arpit Goal |
| console.log (2 === '2') -> correct answer | Arpit Goal |
| 4. Explain map function and filter function in javascript -> correct example and explanation | Arpit Goal |
| 5.What is hoisting in JS ? -> more explanation was required, not able to answer practical questions | Arpit Goal |
| 6. What are closures in JS ? -> almost correct definition, not able to write example | Arpit Goal |
| 7. What is Arrow function in Javascript -> more explanation was required | Arpit Goal |
| 8. Use of this keyword in JS -> not able to answer | Arpit Goal |
| 9. Output Questions | Arpit Goal |
| console.log ('1' + '2') -> correct answer | Arpit Goal |
| console.log (1 + 2 + '3') -> correct answer | Arpit Goal |
| console.log (1 + 2 + '3' + 4) -> correct answer | Arpit Goal |
| 10. Difference between undefined and null -> correct | Arpit Goal |
| 11.What is event loop in JS ? -> he has some knowledge about this, but he was not able to give proper explanation | Arpit Goal |
| 12. What is call stack in JS ? -> not able to answer | Arpit Goal |
| 13. What are rest and spread operators in JS ? -> he has some knowledge about this, but he was not able to give proper explanation | Arpit Goal |
| 14 What is use of setTimeout -> almost correct definition, not able to write example | Arpit Goal |
| 15. What is use of setInterval -> not able to answer | Arpit Goal |
| 16. What is callback function in JS ? -> not able to explain properly, almost correct example | Arpit Goal |
| 17. Difference between function declaration and function expression -> not able to explain properly, not able to write example | Arpit Goal |
| 18. What is IIFE -> correct definition, not able to write example | Arpit Goal |
| 19. Difference between call, bind and apply -> not able to give proper explanation and write example | Arpit Goal |
| 20. What is the use of push and pop method in JS ?-> not able to answer | Arpit Goal |
| 21. What is the use of shift and unshift method in JS ? -> not able to answer | Arpit Goal |
| Nausheen Khan | |
| Explain Null and Undefined in JavaScript | Aejit tripathi |
| Show me the example of Null and undefined in js | Aejit tripathi |
| What is let keyword in JavaScript | Aejit tripathi |
| what is this keyword in js | Aejit tripathi |
| what is difference between == and === operator in js | Aejit tripathi |
| what is recursion in js | Aejit tripathi |
| write code in js to find out prime no. from 20 to 1 by using recursion | Aejit tripathi |
| clouser with example | Ashish Kesari |
| Difference b/w let, var, and const | Ashish Kesari |
| Difference b/w function declaration and function expression. | Ashish Kesari |
| What is DOCTYPE in HTML? | Ashish Kesari |
| What are semantic tags? | Ashish Kesari |
| What is the box model in CSS? | Ashish Kesari |
| What are inline and block elements? | Ashish Kesari |
| Difference between tags vs attributes | Ashish Kesari |
| Simple HTML form-based question Implement | Ashish Kesari |
| > What is js - partially answered | Arnab Roy |
| Arnab Roy | |
| > What is hoisting - partially answered | Arnab Roy |
| Arnab Roy | |
| > What is closure - answered the theory but unable to implement | Arnab Roy |
| Arnab Roy | |
| > what is Function expression - unable to explain | Arnab Roy |
| Arnab Roy | |
| > what is a IIFE - unable to answer | Arnab Roy |
| Arnab Roy | |
| > what is a spread operator - unable to answer | Arnab Roy |
| Arnab Roy | |
| > difference let,var and const - partially answered | Arnab Roy |
| Arnab Roy | |
| > what is block scope and function scope - unable to answer | Arnab Roy |
| Arnab Roy | |
| > What is a setTimeOut and what is a setInterval and what are the difference - unable to answer | Arnab Roy |
| Arnab Roy | |
| > What will be the output of 5+'a' - answered | Arnab Roy |
| Arnab Roy | |
| > create a stringonly with the unique characters from 'aabbbc' , so the output will be 'abc' - unable to implement | Arnab Roy |
| 1. What is == and ===. | Arju Sahu |
| 2. What is difference between let ,const and var. | Arju Sahu |
| 3. What is hoisting | Arju Sahu |
| 4. What is closure. | Arju Sahu |
| 5. What is difference between function statement and function expression. | Arju Sahu |
| 6. What are the advantages of arrow function. | Arju Sahu |
| 7. what is map. | Arju Sahu |
| 8. what is filter. | Arju Sahu |
| 9. What is null and undefined in javascript. | Arju Sahu |
| 10. What is the purpose of setTimeout function. | Arju Sahu |
| 11. What are higher order function. | Arju Sahu |
| 12. What is the significance of this keyword. | Arju Sahu |
| 13. What are callbacks. | Arju Sahu |
| 14. What are promises. | Arju Sahu |
| 15. What is event bubbling. | Arju Sahu |
| 16. What is event capturing. | Arju Sahu |
| 17. What is temporal dead zone. | Arju Sahu |
| What is Js and why would you use it? | Krishan K Yadav |
| Compare let, var, and const keywords. | Krishan K Yadav |
| Arrow function vs normal function. | Krishan K Yadav |
| Write code which logs the index of a value present in an array. | Krishan K Yadav |
| Tell me the output for following code | Krishan K Yadav |
| { let a=1 | Krishan K Yadav |
| let b=true | Krishan K Yadav |
| console.log(a==b) | Krishan K Yadav |
| console.log(a===b) | Krishan K Yadav |
| } | Krishan K Yadav |
| and why? | Krishan K Yadav |
| 1. How js works. (answered) | Swarnim Mukati |
| 2. Event loop. (partially answered). | Swarnim Mukati |
| 3. Hoisting in js with code snippets. (answered) | Swarnim Mukati |
| 4. Synchronous and Asynchronous. (answered incorrectly) | Swarnim Mukati |
| 5. Operations on array. (not answered) | Swarnim Mukati |
| 6. Call, Apply, Bind. (answered incorrectly) | Swarnim Mukati |
| 7. Closure in js. (answered incorrectly) | Swarnim Mukati |
| var vs const vs let | |
| -> function scope vs block scope | |
| -> What is closure? - partially correct | |
-> What are the different ways to access HTML elements in JavaScript? - no answer | |
| -> == vs === | Srikanteshwara Rao |
| -> 5-‘a’ - wrong answer | |
| -> 5+’a’ | |
| -> innerText vs innerHTML - no answer | |
-> What is hoisting? - correct definition, but couldn’t answer the code snippet | |
| -> What is event loop? - no answer | |
| -> Evaluate 2+5+'3' and 2+’5’+3 | |
| -> What is IIFE? | |
| -> What is the o/p of - | |
| const x = { foo : 1}; | |
| const output = (function() | |
| { | |
| delete x.foo; | |
| return x.foo; | |
| })(); | |
console.log(output); - correct answer, but stumbled upon further questioning | |
| -> What is the o/p of - | |
| console.log(count); | |
| var count = 10; correct answer, but couldn’t justify | |
| -> What is the o/p of - | |
| console.log(count); | |
| let count = 10; - incorrect | |
| -> What is the o/p of - | |
| console.log(count); | |
| const count = 10; - incorrect | |
-> inputList = [3, 6, 7, 5, 4] - construct a new array with each element doubled - Sample o/p - [6, 12, 14, 10, 8] | |
| 1- Basics of Js : Good | Chander Parkas Time 07:00 - 08:00pm |
| 2- Data types : Good | |
| 3- let, var, const : Good | |
| 4- temporal dead zone - Good | |
| 5- Scope and Scope Chain : Good | |
| 6- Hoisting : Good | |
| 7- Closure : Good | |
| 8- Event loop: Good | |
| 9- Call, apply, bind : needs to work on this | |
| 1. What is JS, where do we run it, how many threads? | Kanishk Kalyani Time 08:00 - 09:00pm |
| 2. ES5 vs ES6 | |
| 3. let vs var vs const | |
| 4. == vs === | |
| 5. Closures with example | |
| 6. How does JS work and process asynchronous code | |
| 7. Callback functions | |
| 8. Higher order functions | |
| 9. Arrow function vs regular function | |
| 10. Settimeout vs setinterval | |
| 11. Function to add first 10 or n natural numbers and return result. | |
| 12. Template literals | |
| 13. IIFE | |
| what is JS | Darshan shah |
| What is the DOM? | Darshan shah |
| What's the difference between == and === | Darshan shah |
| What is Hoisting? | Darshan shah |
| What are the falsy values in JavaScript? | Darshan shah |
| What is an IIFE, what is the use of it? | Darshan shah |
| What is Event Propagation? | Darshan shah |
| What's Event Bubbling? | Darshan shah |
| let vs var vs const | Darshan shah |
| Darshan shah | |
| const person = { age: 20, name: 'Ben' }; const peopleArray = [person, person, person]; peopleArray[1].name = 'Joe'; console.log(peopleArray[0].name); | Darshan shah |
| Build counter like button and onclick increment value of counter | Darshan shah |
| Given a string, reverse each word in the sentence " welcome to the newton school" | Darshan shah |
| Given two strings, return true if they are anagrams of one another For example: Mary is an anagram of Army | Darshan shah |
| . Difference betweeen null and undefined in JS? (clearly answered for null and undefined.) | Om Prakash Sao |
| . Benefits of declaring a variable as null? (Not answered properly) | Om Prakash Sao |
| . Responsive webpages. How to develop responsive webpages.(answered) | Om Prakash Sao |
| . What is hoisting in JS? Explain with example code?(not satisfied with answer) | Om Prakash Sao |
| . Write an example to change content of paragraph on click of button(not done). | Om Prakash Sao |
| . Write a code to print only part of string(not asked). | Om Prakash Sao |
| . Explain DOM. (explained, not satisfactorily) | Om Prakash Sao |
| . What are callback functions? (Not answered clearly) | Om Prakash Sao |
| . What is promises in JS? (Not answered completely) | Om Prakash Sao |
| . Write example of promises. (Not asked) | Om Prakash Sao |
| Edited By Rahul | |
| -What do you know about JavaScript? | Chintamani Meher |
| -What are the topics you know in JavaScript practical implementation? | Chintamani Meher |
| -Is there any compiler required to run the JS code? | Chintamani Meher |
| -Datatypes & Variables in JavaScript. | Chintamani Meher |
| -Difference between var and let keyword. | Chintamani Meher |
| -What is Global Variable? | Chintamani Meher |
| -What is a scope. | Chintamani Meher |
| -What is a Function. Write a sample code. | Chintamani Meher |
| -What is Closure. Explain with an example. | Chintamani Meher |
| -What are the type of pop-ups available in JavaScript. | Chintamani Meher |
| -Alert the current date and time upon clicking on a html button. | Chintamani Meher |
| -JavaScript Array | Chintamani Meher |
| -for Vs while Vs do-while Loop | Chintamani Meher |
| -JavaScript Operators | Chintamani Meher |
| #ERROR! | |
| null Vs undefined Vs not defined | Chintamani Meher |
| i++ Vs ++i (Given a scenario) | Chintamani Meher |
| -What is an Arrow function. Write an example. | Chintamani Meher |
| Difference between let, var and const | |
| 1. Difference between let, var and const | Arpit Goel |
| 2. Difference between == and === | Arpit Goel |
| 3. Output question | Arpit Goel |
| console.log (2 == '2') | Arpit Goel |
| console.log (2 === '2') | Arpit Goel |
| 4. Explain map function and filter function in javascript | Arpit Goel |
| 5.What is hoisting in JS ? | Arpit Goel |
| 6. What are closures in JS ? | Arpit Goel |
| 7. What is Arrow function in Javascript | Arpit Goel |
| 8. Use of this keyword in JS | Arpit Goel |
| 9. Output Questions | Arpit Goel |
| console.log ('1' + '2') | Arpit Goel |
| console.log (1 + 2 + '3') | Arpit Goel |
| console.log (1 + 2 + '3' + 4) | Arpit Goel |
| 10. Difference between undefined and null | Arpit Goel |
| 11.What is event loop in JS ? | Arpit Goel |
| 12. What is call stack in JS ? | Arpit Goel |
| 13. What are rest and spread operators in JS ? | Arpit Goel |
| 14 What is use of setTimeout | Arpit Goel |
| 15. What is use of setInterval | Arpit Goel |
| 16. What is callback function in JS ? | Arpit Goel |
| 17. Difference between function declaration and function expression | Arpit Goel |
| 18. What is IIFE | Arpit Goel |
| 19. Difference between call, bind and apply | Arpit Goel |
| 20. What is the use of push and pop method in JS ? | Arpit Goel |
| -What do you know all about JavaScript? | Ankit Anand |
| -Difference between var and let keyword. | Ankit Anand |
| -What is Hoisting? How does hoisting work? | Ankit Anand |
| -What is Closure? Write a sample code in Closure. | Ankit Anand |
| -What is a temporal deadzone? | Ankit Anand |
| -What is Shadowing? | Ankit Anand |
| -What is the use of Strict mode? | Ankit Anand |
| -What are the types of pop-ups available in JavaScript? | Ankit Anand |
| -Write a code using prompt pop-ups available in JavaScript. | Ankit Anand |
| 1. var, let, and const in js? | |
| 2. Hoisting in js? | |
| 3. console.log(a) | |
| var a =10; | |
| 4. console.log(a) | |
| let a =10; | |
| 5. const obj = { | |
| name:'manoj' | |
| } | |
| const obj1 = { | |
| name:'Rakhi'} | |
| obj =obj1 | |
| console.log(obj); | |
| 6. const obj = { | |
| name:'manoj' | |
| } | |
| obj.name= "Rakhi" | |
| obj.name; | |
| 7. == and === ? | |
| 8. false == 0? | |
| 9. null and undefined? | |
| 10.null ==undefined? | |
| 12. functions in js? | |
| 13. closures in js? | |
| 14. []===[] and []==[]? | |
| 15 IIFE? | |
| 16. write the function for reversing the string in JS. | |
| 17. splice and splice method? | |
| 18. function foo() { | rakhi mishra |
| let x = (y = 0); | |
| x++; | |
| y++; | |
| return x; | |
| } | |
| console.log(foo(), typeof x, typeof y); | |
| 19. function main() { | |
| console.log("A"); | |
| setTimeout(function print() { | |
| console.log("B"); | |
| }, 0); | |
| console.log("C"); | |
| } | |
| main(); | |
| 20. function main() { | |
| console.log("A"); | |
| setTimeout(function print() { | |
| console.log("B"); | |
| }, 0); | |
| setTimeout(function print() { | |
| console.log("D"); | |
| }, 1000); | |
| console.log("C"); | |
| } | |
| main(); | |
| 21. console.log(0.1 + 0.2 === 0.3); | |
| 22. Arrow functions? | |
| What do you know about JavaScript? | Monojit Das |
| -What are the topics you know in JavaScript practical implementation? | Monojit Das |
| What is the difference between HTML5 and HTML. | Monojit Das |
| JavaScript Promises | Monojit Das |
| -Callbacks. Write a sample code. | Monojit Das |
| What is Scope chain. Write a sample code. | Monojit Das |
| SetTimeout Vs SetInterval | Monojit Das |
| what is call back hell | Monojit Das |
| web storages | Monojit Das |
| what is temporal dead zone | Monojit Das |
| write a code to count the words in a sentense | Monojit Das |
| write a code to swap a number | Monojit Das |
| Questions on projects and work experience. | |
| HTML | |
| 1. What is Doctype HTML? | |
| 2. What is difference between block and inline? | |
| 3. What are the use of meta tags? | |
| 4. What are the use of all three thing HTML, css and Javascript? | |
| 5. What are HTML attributes? | |
| 6. What are list and tables in HTML? | |
| 7. What is the significance of Head and Body tag in HTML? | |
| 8. Approach related to how to structure HTML code? | |
| CSS | |
| 1. Box model in CSS? | |
| 2. Difference between flex box and grid? | |
| 3. What are the difference types of selectors in CSS? | |
| 4. What are Pseudo elements and Pseudo classes? | |
5. Difference between display: none, visibility: hidden and opacity: 0? | |
| JAVASCRIPT | |
| 1. What is javascript. What javascript do in general? | |
| 2. Asynchronous and synchronous difference? | |
| 3. console.log('1'); | |
| setTimeout(() => { | |
| console.log("2"); | |
| }, 1000); | |
| console.log("3"); | |
| 4. What is hoisting? | |
| 5. console.log(a); console.log(b); var a = 10; let b = 20; | |
| 6. What is closure? | |
| 7. Difference between var and let keywords? | |
8. What are IIFEs and explain with an example where they can be used? | |
9. What's the difference between a variable that is: null, undefined, or undeclared? | |
| 10. Difference between “==” and “===” operators. | |
| 11. Explain “this” keyword. | |
| 12. What is DOM? | |
| Introduce yourself. | krishna k yadav |
| What is Async in JS? | |
| What is closure in JS? | krishna k yadav |
| How do we give parent-child relation in css pseudo class? | aejit tripathi |
| What are the new features in HTML5 ? | aejit tripathi |
| Do you know about symentic tags? | aejit tripathi |
| New features in ES6 ? | aejit tripathi |
| What are arrow functions ? | aejit tripathi |
| What are anonymous function ? | aejit tripathi |
| Diff between arrow and anonymous function / | aejit tripathi |
| What are instantly invoke function | aejit tripathi |
| What do we need a meta tag in HTML5 ? | aejit tripathi |
| What do we use viewport in meta tag? | aejit tripathi |
| What is hosting in js, give me an example ? | aejit tripathi |
| What is flex property and why do we use it, some examples? / | aejit tripathi |
| What is grid property ? | aejit tripathi |
| What is position property ? | aejit tripathi |
| Tell me css box structure ? | aejit ttripath |
Hoisting in js.
Example of hoisting
Closures in js
Example of Closure
Difference between map and filter
Difference between var, let, const
Difference between ==& ===
print the sum of integers from an array.
implement counter increment and decrement functionality
Tanish shah
FlexBox
Grid
Promises
Callbacks
Closures
Async Await
Media Queries
No comments:
Post a Comment