Whats diff between == and ===
React Developer Interview Questions
3,046 react developer interview questions shared by candidates
What is the Virtual DOM?
À partir des informations suivantes, essayez de comprendre pourquoi cette application bug dans telle région du monde
Qu'est ce qu'un middleware, quels type de base de données existent
Javascript basics questions ( clouser, scoping, event loop)
One common React.js interview question is: "How does React handle state management, and what are the differences between useState, useReducer, and Context API?" Be prepared to explain with examples.
. What is React? · What is the difference between a library & framework? · What is JSX? · What is Virtual DOM? How it works? · What is the difference between Element and Component? · When to use a Class Component over a Function Component? · What are Pure Components? · What is the difference between state and props? · What is "key" prop and what is the benefit of using it in arrays of elements? · What is the use of refs in React? · What is the difference between controlled component & uncontrolled component? · What are the lifecycle methods of React? · What are the different phases of component lifecycle? · What are Higher-Order components? · What is children prop? · What are fragments? · What is the difference between stateful and stateless component? · What are Error Boundaries? · What are Hooks. · Can Hooks cover all use cases for classes? · How do you memorize a component? · What is strict mode in React? · What is code-splitting in React? · Is it good to use arrow functions in render methods? · What is context? · Give an example on How to use context? · What is React Router? · What is the purpose of push and replace methods of history? · What is Redux? · What are the core principles of Redux? · What is the difference between mapStateToProps() and mapDispatchToProps()? · What is an action in Redux? · How can we write asynchronous code in Redux? . What will happen if I change state like this ..... this.state.name = "name" ? Why is not correct ? . What will happen if we use setState() inside a constructor ?
Reverse a string in js
Challenging project you've worked on
Palindrome, Reverse string, Remove duplicates in array, Template literal Example in Javascript Fetching the data from API, Timer counter Examples in React js
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