Callback Hell is also known as the Pyramid of Doom. It is a pattern caused by intensively nested callbacks which are unreadable and unwieldy. It typically contains multiple nested callback functions which in turn make the code hard to read and debug. It is caused by improper implementation of the asynchronous logic.
async_A(function(){
async_B(function(){
async_C(function(){
async_D(function(){
….
});
});
});
});
In case you are facing any challenges with these Node.js Interview Questions, please mention your problems in the section comment section below.