Async Code in Node.js: Callbacks and Promises

📰 Dev.to · Kunal

Learn to write efficient async code in Node.js using callbacks and promises

intermediate Published 9 Jul 2026
Action Steps
  1. Write a simple callback function to handle async operations
  2. Use the Promise API to create and resolve promises
  3. Compare the differences between callbacks and promises in Node.js
  4. Implement error handling using try-catch blocks and promise chaining
  5. Test async code using Node.js built-in modules like setTimeout and setInterval
Who Needs to Know This

Backend developers and Node.js engineers can benefit from understanding async code to improve application performance and responsiveness

Key Insight

💡 Async code allows for non-blocking I/O operations, improving application performance and scalability

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🚀 Master async code in Node.js with callbacks and promises! 💻

Key Takeaways

Learn to write efficient async code in Node.js using callbacks and promises

Full Article

As we already know, JavaScript has two ways to run code: Synchronous and Asynchronous. We use both...
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