What is callback Hell in JavaScript | JavaScript Tutorials in Hindi | Interview Question #25

Callback hell is a situation that arises in JavaScript programming when you have multiple nested callbacks, making the code difficult to read and debug. This occurs when you have functions that depend on the results of other functions, which in turn depend on the results of other functions, and so on.

The code structure of callback hell looks like a pyramid, with each nested callback causing the next level to indent further to the right. This indentation can continue for many levels, making the code difficult to read and understand.

Callback hell can be avoided by using Promises, async/await, or other modern JavaScript techniques that allow for better code organization and readability.