Developers can identify and resolve issues efficiently while ensuring robust and error-free code by using specialized tools and following established practices. Drawing on the latest industry trends and real-world examples, we’ve compiled 17 must-know React Native questions to help you confidently navigate your next interview in 2025. As the CEO of Full Scale, he has helped over 100 tech companies build their software services and development teams. Full Scale specializes in helping tech companies grow by augmenting their in-house teams with software development talent from the Philippines.
What are global objects in Node.js?
Furthermore, the promises make the code easier to debug, while offering better flow control and error handling. The ‘require()’ function is used to import modules, while ‘module.exports’ or ‘exports’ is used to expose functionality from a module. Node.js comes with several built-in core modules like ‘fs’ for file system operations, ‘http’ for creating HTTP servers, and ‘path’ for handling file paths. Additionally, developers can create their own custom modules or use third-party modules from the npm registry.
- But before that, let’s briefly take a look at what Node.js development is and who Node.js developers are.
- It is quite common to feel anxious at first, especially if this is your first time on the hot seat.
- The Multi-Threaded Request/Response Stateless Model is not followed by the Node JS Platform, and it adheres to the Single-Threaded Event Loop Model.
- The data event is emitted each time a chunk of data is read from the file, and the end event is emitted when the entire file has been read.
- This module allows you to create a master process that manages a cluster of worker processes.
- This is achieved by using asynchronous I/O operations, where the application initiates an I/O operation and then continues executing other tasks.
b) Managing environment variables:
Node.js leverages Buffers for handling binary data and Streams for efficiently processing data in chunks. Its module system allows for code organization and reusability, while global objects like ‘global’, ‘process’, and ‘console’ provide important functionalities. Understanding asynchronous programming, including callbacks, Promises, and async/await, is crucial JavaScript Full-stack developer (Node.jsReact.js) job for writing efficient Node.js applications. This approach allows Node.js to handle a large number of simultaneous connections without blocking the event loop or creating new threads.
What are some of the drawbacks of using NodeJS?
The response data is logged to the console, and any errors are handled with the .catch() method. In this example, fs.readFile() asynchronously reads the content of ‘example.txt’ and calls the provided programmer callback function when the operation is complete. This way, the rest of the program can continue executing while the file is being read, enhancing overall performance.
- This includes discussing specific projects where you’ve successfully applied React Native principles, such as component-based architecture, state management, and native module integration.
- This means that Node.js can handle multiple requests simultaneously without causing any delays.
- Second, you should ask the candidate to show you a sample of their work.
- In the example above, we create a new EventEmitter object called myEmitter.
- In Node.js, first-class functions are used extensively in asynchronous programming to write non-blocking code.
- The process.kill() method can be used to send a signal to the Node.js process, which can be used to terminate the process or perform other actions.