What are functional components and class components in React?
React Developer Interview Questions
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Was sind die 3 wichtigsten Dinge, die Sie von der Firma erwarten, damit Sie langfristig bei uns bleiben?
How do you deal with jumping between different projects and specialties?
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Create a React component that iterates through an array of images, displaying one image at a time. After a 2-second interval, the component should transition to the next image, continuing this cycle. Upon reaching the end of the image array, it should seamlessly loop back to the first image, maintaining the continuous cycle.
Was asked features of Java 9 ..?
Explain the logic behind the Binary Search and write a JavaScript program illustrating the same.
what is virtual dom how to increase performance what is useeffct hook
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.
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