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React Developer Interview Questions
3,476 react developer interview questions shared by candidates
what is virtual dom how to increase performance what is useeffct hook
Toda mi historia como d ev
How do you deal with jumping between different projects and specialties?
Q1: WAP to convert variable name from camelCase to snake_case and vice-versa. Q2: WAP to print the occurence of character in string like- Input: 'adbcaabd' Output: 'a3b2c1d2'
Some of the question are what is header classes, immediate invoke function, inline cache, linking. execution context.
HTML, CSS, JS, ReactJS,Redux, web workers, service workers, web storage, RTL, RWD, Caching Strategies, Typescript, web pack
1. Versions of React you have worked on and features of latest React version you have worked with? 2. All the hooks that you have used. Explain when to use useCallback. 3. How to manage state in React? 4. Custom hooks. Why use it? 5. What CSS preprocessors you have worked on? 6. Redux related questions. 7. Use of effects in Saga middleware. 8. Which library have you used for testing? Some basic questions. 9. Positions in CSS 10. Grid vs Flex 11. Semantic elements 12. JS questions ---------------- var a = [] function test(b) { a.push(b) return b } var a = [1,2,3] var b = a b.push(4) console.log(a) ---------------- let i; for (i = 0; i < 3; i++) { const log = () => { console.log(i); } setTimeout(log, 100); } ---------------------- var obj = { a: “John”, fun1: function () { console.log(this) } } obj.fun1() ----------------- var obj = { a: “John”, fun1: () => { console.log(this) } } obj.fun1() -------------------- 13. Create a timer/stopwatch using react.
What is generator function? What is reconciliation process.
Adding features to existing code by adding event listeners
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