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React Js Developer Interview Questions
538 react js developer interview questions shared by candidates
Basic React questions like- 1. Working of Virtual DOM. 2. Working of hooks. 3. controlled/uncontrolled events. 4. React Fragments etc... 5. Fetching data from an API endpoint.
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Basics of Reactjs, controlled and uncontrolled components, Hooks , HOC, Refs
1. Solve react questions 2. react performance related questions 3. code related questions like how hooks work
In depth questions of Javascript : object, es6 features. coding string related question. React : hooks , lifecycle , redux , HTML & CSS : basics but deep
in package.json we have tilt sign and cap sign for package name: version what the signs indicate
- How do you make issue queries/mutations to a graphql server - how do you create graphql server ? What things you need ? - What is directive in graphql ? What is Fragment in GraphQL ? - How do you write unit tests for your Queries/Mutation (on server side) - TypeScript basics - Partial in TS - Decorators - union & discriminating unions - What are Generics in TS ? simple example - useCallback vs useMemo - call parent func from child component in React
Basic HTML, CSS, Javascript and React questions
React & JS 1. Given 1 URL that data need to render in table format, while coding ask few question what is hook, useState, useEffect, debug the code analysis the styling and change it. 2. Closure, Hoisting in js 3. Let say you are CEO if huge E-commerce application as a CEO what kind of this you want to see when you have only 10 minutes to see. 4. LinkedList, Stack, Queue Java 1. HashMap working internal, Linked HashMap vs HashMap. 2. Design LLD for Parking Lot 3. Advantage of Spring Bean over manual creation of bean. 4. Give some situation and ask what kind of Data structure you use.
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