React Interview Masterclass: Top 200 Questions (with PDF)

سرفصل های دوره

React - Basics/ JSX/ Routing/ Lifecycle Methods/ Hooks/ Redux/ Typescript (with PDF/ PPT Revision Book)

1. Introduction

1.1 react-code.zip

1.2 Top-200-React-Interview-Questions-PDF.pdf

1.3 top-200-react-interview-questions-tracker.zip

1.4 Top-200-React-Interview-Questions.pptx

1. Introduction

2. React-Basics - I

1. React-Basics - I - Introduction

2. Q 1. What is React What is the Role of React in software development

3. Q2. What are the Key Features of React

4. Q3. What is DOM What is the difference between HTML and DOM

5. Q4. What is Virtual DOM Difference between DOM and Virtual DOM

6. Q5. What are React Components What are the main elements of it

7. Q6. What is SPA(Single Page Application)

8. Q7. What are the 5 Advantages of React

9. Q8. What are the Disadvantages of React

10. Q9. What is the role of JSX in React (3 points)

11. Q10. What is the difference between Declarative & Imperative syntax

3. React-Basics - II

1. React-Basics - II

2. Q11. What is Arrow Function Expression in JSX

3. Q12. How to Setup React first project

4. Q13. What are the Main Files in a React project

5. Q14. How React App Load and display the components in browser

6. Q15. What is the difference between React and Angular

7. Q16. What are other 5 JS frameworks other than React

8. Q17. Whether React is a Framework or a Library What is the difference

9. Q18. How React provides Reusability and Composition

10. Q19. What are State, Stateless, Stateful and State Management terms

11. Q20. What are Props n JSX

4. React Project - Main Files & Folders

1. React Project - Main Files & Folders

2. Q21. What is NPM What is the role of node modules folder

3. Q22. What is the role of public folder in React

4. Q23. What is the role of src folder in React

5. Q24. What is the role of index.html page in React

6. Q25. What is the role of index.js file and ReactDOM in React

7. Q26. What is the role of App.js file in React

8. Q27. What is the role of function and return inside App.js

9. Q28. Can we have a function without a return inside App.js

10. Q29. What is the role of export default inside App.js

11. Q30. Does the file name and the component name must be same in React

5. JSX

1. JSX

2. Q31. What is the role of JSX in React (3 points)

3. Q32. What are the 5 Advantages of JSX

4. Q33. What is Babel

5. Q34. What is the role of Fragment in JSX

6. Q35. What is Spread Operator in JSX

7. Q36. What are the types of Conditional Rendering in JSX

8. Q37. How do you iterate over a list in JSX What is map() method

9. Q38. Can a browser read a JSX File

10. Q39. What is Transpiler What is the difference between Compiler & Transpiler

11. Q40. Is it possible to use JSX without React

6. Components - Functional Class

1. Components - Functional Class

2. Q41. What are React Components What are the main elements of it

3. Q42. What are the Types of React components What are Functional Components

4. Q43. How do you pass data between functional components in React

5. Q44. What is Prop Drilling in React

6. Q45. Why to Avoid Prop Drilling In how many ways can avoid Prop Drilling

7. Q46. What are Class Components In React

8. Q47. How to pass data between class components in React

9. Q48. What is the role of this keyword in class components

10. Q49. Differences btw Functional components and Class components

7. Routing

1. Routing - Introduction

2. Q50. What is Routing and Router in React

3. Q51. How to Implement Routing in React

4. Q52. What are the roles of Routes & Route component in React Routing

5. Q53. What are Route Parameters in React Routing

6. Q54. What is the role of Switch Component in React Routing

7. Q55. What is the role of exact prop in React Routing

8. Hooks -useState useEffect

1. Hooks -useState useEffect

2. Q56. What are React Hooks What are the Top React Hooks

3. Q57. What are State, Stateless, Stateful and State Management terms

4. Q58. What is the role of useState() hook and how it works

5. Q59. What is the role of useEffect(). How it works and what is its use

6. Q60. What is Dependency Array in useEffect() hook

7. Q61. What is the meaning of the empty array [] in the useEffect()

9. Hooks - useContext useReducer

1. Hooks - useContext useReducer

2. Q62. What is the role of useContext() hook

3. Q63. What is createContext() method What are Provider & Consumer properties

4. Q64. When to use useContext() hook instead of props in real applications

5. Q65. What are the similarities between useState() and useReducer() hook

6. Q66. What is useReducer() hook When to use useState() and when useReducer()

7. Q67. What are the differences between useState() and useReducer() Hook

8. Q68. What are dispatch & reducer function in useReducer Hook

9. Q69. What is the purpose of passing initial state as an object in UseReducer

10. Hooks - useCallback useMemo useRef useLayoutEffect

1. Hooks - useCallback useMemo useRef useLayoutEffect

2. Q70. What is the role of useCallback() hook in React

3. Q71. What parameters does the useCallback hook accept & what does it returns

4. Q72. What is the role of useMemo() Hook

5. Q73. What is the role of useRef() Hook

6. Q74. What useLayoutEffect() Hook Compare it with useEffect() hook.

7. Q75. When to use useLayoutEffect() Hook

11. Hooks - Best Practices Short Answer

1. Hooks - Best Practices Short Answer

2. Q76. What are the Rules or Best Practices for hooks implementation

3. Q77. What are Custom Hooks

4. Q 78- Q83

5. Q84. What are the uses of all the Hooks in React

12. Components LifeCycle Methods - I

1. Components LifeCycle Methods - I

2. Q85. What are Component life cycle phases

3. Q86. What are Component life cycle methods

4. Q87. What are Constructors in class components When to use them

5. Q88. What is the role of super keyword in constructor

6. Q89. What is the role of render() method in component life cycle

7. Q90. How the State can be maintained in a class component

8. Q91. What is the role of componentDidMount() method in component life cycle

13. Components LifeCycle Methods - II

1. Components LifeCycle Methods - II

2. Q92. What is the role of componentDidUpdate() method in component life cycle

3. Q93. What is the role of componentWillUnmount() method in component life cycle

4. Q94 - Q98

14. Controlled & Uncontrolled Components

1. Controlled & Uncontrolled Components

2. Q99. What are Controlled Components in React

3. Q100. What are the Differences btw Controlled & Uncontrolled Components

4. Q101. What are characteristics of controlled components

5. Q102. What are the advantages of using controlled components in React forms

6. Q103 - Q106

15. Code Splitting

1. Code Splitting

2. Q107. What is Code Splitting in React

3. Q108. How to Implement Code Splitting in React

4. Q109. What is the role of Lazy and Suspense methods in React

5. Q110. What are the Pros and Cons of Code Splitting

6. Q 111 - Q114

16. React - Others

1. React - Others

2. Q115. What is a Higher-Order Component in React

3. Q116. What are the 5 ways to Style React components Explain Inline Styles

4. Q117. What are the differences between React & React Native

5. Q118. What is GraphQL

6. Q119. Ways to achieve state management When to use what in React

7. Q120. How can you Implement Authentication in a React application

8. Q121. What is the use of React Profiler

9. Q122. What is the difference between fetch & axios for api calls in React

10. Q123. What are the popular Testing Libraries for React

11. Q124. How can you Optimize Performance in a React application

12. Q125. Explain Reactive Programming with example

13. Q126. In how many ways can we implement Reactive Programming in React

14. Q127. How to pass data from child component to parent Component in React

17. Redux - Component Action Store Reducer

1. Redux - Component Action Store Reducer

2. Q128. What is the role of Redux in React

3. Q129. When to use Hooks and when to use Redux in React applications

4. Q130. What is the Flow of data in React while using Redux

5. Q131. How to install Redux for React application

6. Q132. What are Action Creators in React Redux

7. Q133. Difference between Action Creators, Action Object & Action Type

8. Q134. Explain React Component Structure while using Redux

9. Q135. What is the role of Store in React Redux

10. Q136. What is the role of Reducer in Redux

18. Redux - Core Principles Pros-Cons Local & Redux State

1. Redux - Core Principles Pros-Cons Local & Redux State

2. Q137. Explain the Core Principles of Redux

3. Q138. List 5 benefits of using Redux in React

4. Q139. What are the differences between local component state & Redux state

5. Q140. What are the challenges or disadvantages while using Redux

19. Redux - Short Answer

1. Redux - Short Answer

2. Q141. What is Provider Component

3. Q142. What is the role of Connect function in React-Redux

4. Q143. What are the 4 Important Files in React-Redux project

5. Q144. How to structure the project and maintain state in multiple components

6. Q145. Explain the concept of immutability in the context of Redux

7. Q146. Typical properties of an Action object in React-Redux project

8. Q147. Difference btw mapDispatchToProps & mapStateToProps in the connect

9. Q148. What is the meaning of Unidirectional Data Flow in Redux

10. Q149. How does Redux handle communication between components

11. Q150. What is Payload property in Redux

20. Redux - Thunk Middleware Error Handling Flux

1. Redux - Thunk Middleware Error Handling Flux - Introduction

2. Q151. Difference between Regular Action creator & Thunk action creator

3. Q152. Explain the concept of Middleware in React-Redux

4. Q153. How can you handle Asynchronous Operations & side-effect in React-Redux

5. Q154. How does Error Handling work in Redux

6. Q155. What is the difference between Flux & Redux

21. JavaScript Essentials for React

1. JavaScript Essentials for React

2. Q156. What are variables What is the difference between var, let, and const

3. Q157. What are the types of conditions statements in JS

4. Q158. What is Error Handling in JS

5. Q159. What is the difference between Spread and Rest operator in JS

6. Q160. What are Arrays in JS How to get, add & remove elements from arrays

7. Q161. What is Array Destructuring in JS

8. Q162. What are Functions in JS What are the types of function

9. Q163. Difference between named and anonymous functions When to use what

10. Q164. What is function expression in JS

11. Q165. What are Arrow Functions in JS What is it use

12. Q166. What are Callback Functions What is it use

13. Q167. What is Higher-order function In JS

14. Q168. What are Pure and Impure functions in JS

15. Q169. What are template literals and string interpolation in strings

16. Q170. What are Objects in JS

17. Q171. What is the difference between an array and an object

18. Q172. How do you add or modify or delete properties of an object

19. Q173. What is asynchronous programming in JS What is its use

20. Q174. What is the difference between synchronous and asynchronous programming

21. Q175. What are Promises in JavaScript

22. Q176. How to implement Promises in JavaScript

23. Q177. What is the purpose of async await Compare it with Promises

24. Q178. What are Classes in JS

25. Q179. What is a constructor

26. Q180. What is the use of this keyword

22. Typescript

1. Typescript - Introduction

2. Q181. What is TypescriptDifference between Typescript and Javascript

3. Q182. How to install Typescript and check version

4. Q183. What is the difference between let and var keyword

5. Q184. What is Type annotation

6. Q185. Primitive and Non-primitive Types in Typescript

7. Q186. What is any type in Typescript

8. Q187. What is Enum type in Typescript

9. Q188. What is the difference between void and never types in Typescript

10. Q189. What is Type Assertion in Typescript

11. Q190. What are Arrow Functions in Typescript

12. Q191. What is Object Oriented Programming in Typescript

13. Q192. What are Classes and Objects in Typescript

14. Q193. What is Constructor

15. Q194. What are Access Modifiers in Typescript

16. Q195. What is Encapsulation in Typescript

17. Q196. What is Inheritance in Typescript

18. Q197. What is Polymorphism in Typescript

19. Q198. What is Interface in Typescript

20. Q199. Whats the difference between extends and implements in TypeScript

21. Q200. Is Multiple Inheritance possible in Typescript

22. END

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