What is the impact of callback functions on performance?

What is the impact of callback functions on performance?

Callback functions can affect performance by introducing delays, especially in asynchronous operations. They can lead to callback hell if not managed properly.

Can you explain what callback hell is?

Callback hell refers to the situation where multiple nested callbacks make code difficult to read and maintain, often leading to errors.

Are there any alternatives to using callback functions?

Yes, alternatives include Promises and async/await syntax, which can help manage asynchronous code more cleanly.

How do Promises improve performance compared to callbacks?

Promises improve performance by allowing better error handling and chaining, which reduces the complexity of nested callbacks.