How to useconsole.warn() Method in Javascript

Approach 1: Using console.error() Method

The console.warn() method is used to write a warning message in the console. To check the warning message, open the console panel to display the output (warning message).

Syntax:

console.warn( message )

Example:

Javascript

let str = ["Welcome to w3wiki"];  
console.warn(str);

Output:

Welcome to w3wiki

How to Print a Message to the Error Console Using JavaScript ?

This article will show you how to print a message using JavaScript on the error console. There are three methods to display the error console, these are: