Node.js Console

The Node.js console module provides a simple debugging console similar to JavaScript console mechanism provided by web browsers.

There are three console methods that are used to write any node.js stream:

Node.js console.log()

The console.log() function is used to display simple message on console.

File: console_example1.js

Open Node.js command prompt and run the following code:

Node.js console example 1

We can also use format specifier in console.log() function.

File: console_example2.js

Open Node.js command prompt and run the following code:

Node.js console example 2

The console.error() function is used to render error message on console.

File: console_example3.js

Open Node.js command prompt and run the following code:

Node.js console example 3

The console.warn() function is used to display warning message on console.

File: console_example4.js

 const name = ‘John’; console.warn(`Don’t mess with me ${name}! Don’t mess with me!`);  

Open Node.js command prompt and run the following code:

Node.js console example 4