HTML DOM console warn() Method

The console.warn() method is used to write a warning message in the console. So open the console to display the output (warning message). 

Syntax:

console.warn( message )

Parameters: This method accepts single parameter message which is mandatory. This parameter is used to hold the warning message. 

Example 1: In this example, we display a warning message using console.warn(). It prompts users to press F12 to view the warning in the browser console. The content is centered and styled with green headers.

Output:

👁 Image

Example 2: In this example we use console.warn() to log a warning message containing an array. Press F12 to view the warning in the browser’s console. The page is styled with center alignment.

Output:

👁 Image
Supported Browsers: The browser supported by console.warn() method are listed below:

• Google Chrome
• Edge
• Firefox
• Opera
• Safari