| No. | Question |
|---|---|
| 1 | What is JavaScript? |
| 2 | Who developed JavaScript, and what is the first name of JavaScript? |
| 3 | What are the differences between Java and JavaScript? |
| 4 | What are the JavaScript Data Types? |
| 5 | Difference between var, const, and let keyword in JavaScript. |
| 6 | What is the basic use of the isNaN function in JavaScript? |
| 7 | What do you mean by negative infinity? |
| 8 | What are undeclared and undefined variables? |
| 9 | What is a prompt box? |
| 10 | What do you mean by the 'this' keyword in JavaScript? Explain it. |
| 11 | How do we Define comments in JavaScript? |
| 12 | What do you mean by the "===" operator? |
| 13 | Does JavaScript support automatic type conversion (AutoConversion)? |
| 14 | How should we change the style/class of an element? |
| 15 | What are all the loops available in JavaScript? |
| 16 | What is called Variable typing in JavaScript? |
| 17 | Explain the difference between the "==" and "===" operator? |
| 18 | What Should be the answer of 3+2+ "7"? |
| 19 | What is a continue statement in JavaScript? |
| 20 | Is JavaScript case-sensitive? |
| 21 | What are the different functional components of JavaScript? |
| 22 | What do you mean by the unshift() method? |
| 23 | What are the unescape() and escape() functions in JavaScript? |
| 24 | Are ECMAScript and JavaScript related? How? |
| 25 | What do you mean by NULL in JavaScript? |
| 26 | What is the use of the delete operator? |
| 27 | What do you mean by undefined value in JavaScript? |
| 28 | Name all the types of Pop-up boxes available in JavaScript? |
| 29 | Define the use of Void(0) in JavaScript? |
| 30 | What is the data type of variables in JavaScript? |
| 31 | State the Difference between an Alert Box and a Confirmation Box? |
| 32 | Is JavaScript a statically typed or a dynamically typed language? |
| 33 | What is NaN property in JavaScript? |
| 34 | How to include JavaScript code in HTML? |
| 35 | When to use scripts in the head and when to use scripts in the body? |
| 36 | What is Promises in JavaScript? |
| 37 | What is Async/Await in JavaScript? |
| 38 | How JavaScript promotes Asynchronous Programming? |
| 39 | Which keywords are used to handle exceptions? |
| 40 | What is the fetch() Method in JavaScript? |
| 41 | What is an Event Loop? |
| 42 | What is context execution? |
| 43 | What is a call stack? |
| 44 | What is stack and Heap Memory? |
| 45 | What are event handlers? |
| 46 | What is debouncing? |
| 47 | What is module pattern? |
| 48 | What is throttling? |
| 49 | What is a pure function? |
| 50 | What are lambda or arrow functions? |
| 51 | What is a Temporal Dead Zone? |
| 52 | Define an anonymous function. |
| 53 | What are JavaScript prototypes? |
| 54 | What is the Document Object Model (DOM)? |
| 55 | What are JavaScript Modules? |
| 56 | What are template literals in JavaScript? |
| 57 | Explain destructuring in JavaScript. |
| 58 | What are default parameters in JavaScript functions? |
| 59 | What is the spread operator and how is it used? |
| 60 | How does JavaScript handle asynchronous code? |
| 61 | What is event delegation in JavaScript? |
| 62 | Explain the map, filter, and reduce methods in JavaScript. |
| 63 | What are JavaScript mixins? |
| 64 | What is function currying in JavaScript? |
| 65 | Explain the concept of memoization in JavaScript. |
| 66 | What is scope in JavaScript? |
| 67 | Explain global and local scope in JavaScript. |
| 68 | Explain the difference between synchronous and asynchronous JavaScript. |
| 69 | How do you handle API requests with JavaScript? |
| 70 | Explain Cross-Origin Resource Sharing (CORS). |
| 71 | How do you handle memory leaks in JavaScript? |
| 72 | How does JavaScript handle Garbage Collection? |
| 73 | Explain the role of JavaScript in web accessibility. |
| 74 | What are the latest ECMAScript features? |
| 75 | How do you ensure your JavaScript code follows best practices? |
| 76 | Explain the role of JavaScript in server-side development (Node.js). |
| 77 | What is the new keyword in JavaScript? |
| 78 | How do you perform form validation using JavaScript? |
| 79 | How do you handle cross-browser compatibility issues in JavaScript? |
| 80 | What are the different ways to create objects in JavaScript? |
| 81 | Explain the difference between Object-Oriented Programming and Functional Programming in JavaScript. |
| 82 | What is promise chaining? |
| 83 | What is promise.all? |
| 84 | What are the differences between cookie, local storage, and session storage? |
| 85 | What is a callback hell? |
| 86 | What is the difference between null value and undefined value in JavaScript? |
| 87 | What is the difference between a double equal to sign and a triple equal to sign? |
| 88 | What is the difference between a PROMISE and a CALLBACK? |
| 89 | What is the difference between equality and strict equality? |
| 90 | Explain about setTimeout and setInterval? |
| 91 | Is it possible to declare an array with random numbers and alphabets as well? |
| No. | Question |
|---|---|
| 1 | How do you manipulate the DOM using JavaScript? |
| 2 | What is a callback function? |
| 3 | Explain the working of timers in JavaScript? |
| 4 | Explain Hoisting in JavaScript. |
| 5 | Explain Implicit Type Coercion in JavaScript. |
| 6 | How closures work in JavaScript? |
| 7 | How Cookies work in JavaScript? |
| 8 | Explain the use of the bind, call, and apply methods. |
| 9 | Explain event bubbling and event capturing. |
| 10 | Describe the role of deferred scripts in JavaScript. |
| 11 | Explain the concept of higher-order functions. |
| 12 | Explain the concept of a singleton in JavaScript. |
| 13 | How do you handle exceptions in JavaScript? |
| 14 | What is stack and Heap Memory? |
| 15 | What is debouncing? |
| 16 | What is throttling? |
| 17 | Explain the concept of memoization in JavaScript. |
| 18 | Explain Cross-Origin Resource Sharing (CORS). |
| 19 | How do you handle memory leaks in JavaScript? |
| 20 | How does JavaScript handle Garbage Collection? |
| 21 | Explain the role of JavaScript in web accessibility. |
| 22 | How do you ensure your JavaScript code follows best practices? |
| 23 | Explain the role of JavaScript in server-side development (Node.js). |
| 24 | How do you handle cross-browser compatibility issues in JavaScript? |
| 25 | What is promise chaining? |
| 26 | What is promise.all? |
| 27 | What are the differences between cookie, local storage, and session storage? |
| 28 | Can you tell me the most basic advantage of using arrow function? |
| 29 | What are Axios? |
| 30 | What is the difference between Fetch and Axios? |
| 31 | When should you use asynchronous programming? |
| 32 | Where is the DOM created? Server side or client side? |
| 33 | What is a timeout? |
| 34 | How we can avoid callback hells? |
| 35 | What is ES6? |
| 36 | What's the difference between an arrow function and a normal function? |
| No. | Question |
|---|---|
| 1 | Explain about Read and Write of a file using JavaScript? |
| 2 | Functions for converting a string of any base to integer in JavaScript? |
| 3 | List the disadvantages of using innerHTML in JavaScript. |
| 4 | What are all the loops available in JavaScript? |
| 5 | What is an Immediately Invoked Function in JavaScript? |
| 6 | How to include JavaScript code in HTML? |
| 7 | How do you handle exceptions in JavaScript? |
| 8 | What is an Event Loop? |
| 9 | What is context execution? |
| 10 | What is a call stack? |
| 11 | What is module pattern? |
| 12 | What is a pure function? |
| 13 | What is a Temporal Dead Zone? |
| 14 | What are JavaScript prototypes? |
| 15 | What is the Document Object Model (DOM)? |
| 16 | What are default parameters in JavaScript functions? |
| 17 | How does JavaScript handle asynchronous code? |
| 18 | Explain the map, filter, and reduce methods in JavaScript. |
| 19 | What are JavaScript mixins? |
| 20 | What is function currying in JavaScript? |
| 21 | Explain global and local scope in JavaScript. |
| 22 | How do you handle API requests with JavaScript? |
| 23 | How do you perform form validation using JavaScript? |
| 24 | What are the different ways to create objects in JavaScript? |
| 25 | Explain the difference between Object-Oriented Programming and Functional Programming in JavaScript. |
| 26 | What are observables? |
| 27 | What are event emitters in JavaScript? |
| 28 | Is JavaScript single-threaded or multi-threaded? |