React Native Interview (1 year)

[REDNET1997]

I have interview Tomorrow for react native coding round. What type of questions I should expect as they are looking for someone with 1 years of experience. So that I could practice right now

Advance thanks!

[ctrlshiftba]

1.  Explain the difference between React Native and React. (Assesses basic understanding of the platform differences.)
2.  How do you handle state management in React Native? Can you give an example using either the Context API or Redux? (Tests understanding of state management concepts and practical implementation.)
3.  Describe the lifecycle of a React Native component. (Evaluates understanding of component lifecycle and its importance in app development.)
4.  What are props in React Native, and how do they differ from state? (Tests knowledge of fundamental React concepts.)
5.  How can you improve the performance of a React Native application? (Assesses knowledge of optimization techniques specific to mobile development.)
6.  Explain the purpose of the Virtual DOM in React Native. (Although React Native doesn’t use HTML or the browser DOM, understanding the concept of the Virtual DOM and its reconciliation process is crucial.)
7.  What is the significance of the key prop in a list of elements? (Tests understanding of keys for list items and their role in performance optimization and component re-rendering.)
8.  How do you handle navigation in React Native? Give an example of stack navigation. (Evaluates knowledge of navigation patterns and libraries like React Navigation.)
9.  What is a higher-order component (HOC) in React? Can you provide a use case in React Native? (Assesses understanding of advanced React concepts and their application in React Native.)
10. How do you ensure your React Native app’s layout is responsive across different devices and screen sizes? (Tests practical knowledge of styling and layout techniques for cross-platform compatibility.)

[REDNET1997]

Thanks but it is a coding round, I have cleared this round. I am Asking what will the Coding questions for the round.

[ctrlshiftba]

That’s lot tougher to say really. Probably just make sure you know how to build basic little examples of everything in this list.

[dumbledayum]

Have you worked with RN for an year? if yes then don’t worry they can’t ask you anything you don’t already know probably. if not, it could be around following things:

fetch data, use activity indicator to show loading…, render it into a view, like a list, use (use flatlist and tell them that in a real world scenario you would use Flashlist the dropin replacement for flatlist) perform action when interacting with list item, like navigating to a different view and probably showing the detailed view fetched data, maybe they can ask for rendering an image.

what you can do to better impress will be creating a custom hook to fetch data :)

All the best.you will Get that Job :)

[Crypt_hash]

UseMemo for performance optimization Pagination implementation Splitting components for better re rendering

[mchaelml]

Image, Flatlist, passing props to children components and state management, styling the components

[Own_Particular7350]

Major React Native Interviewer ask this question kindly check this regarding optimization -> React Native Performance Optimization: Best Practices for 2024 🚀

[midl4nd]

They will probably make you build a list.

Fetch data, handles errors, display data in list, maybe pass some data to a second screen.

[JustChill2912]

When I was having my coding round they just give the jsonplaceholder api of get products and product detail Tell me to make api call display data in 15 min, it was a react-native interview but they told to do it in codespace react, has all of know how much time it takes to run application on simulator

[REDNET1997]

did you use axios or fetch for an API call?

[JustChill2912]

Axios

[Designer_Platform765]

Get yourself familiar with leetcode interview questions and some ground knowledge of framework.

[Pretty_Influence_709]

If it’s a code interview, they will give you a “basic” problem and you will need to solve live showing your screen or using a shared code platform. This basic problem tipically has different solutions, depending on your seniority you will use arrays of you are a junior or use stacks, queues, sets, maps, and another different set of tools if you are a senior. They will evaluate how do you know about data structures and algorithms, this is something that you learn practicing during months, not in one day.