HTML DOM console.warn()Method
Console ObjectExample
Output a warning message to the console:
console.warn("Example! This is a warning message");
Try it Yourself »
Definition and Usage
The console.warn() method is used to output warning messages to the console.
This method is helpful for testing during the development process.
Tip:When testing this method, the console needs to be visible (press F12 in the browser to open the console).
Syntax
console.warn(message)
Browser Support
The numbers in the table indicate the first browser version that supports this method.
| Method | |||||
|---|---|---|---|---|---|
| console.warn() | Yes | 8.0 | 4.0 | Yes | Yes |
Parameter Description
| Parameter | Type | Description |
|---|---|---|
| message | String or Object | Required. The message to display on the console. |
More Examples
Example
Use an object as the warning message output:
var myObj = { name : "Example", site : "www.example.com" };
console.warn(myObj);
Try it Yourself »
Example
Use an array as the warning message output:
var myArr = ["Google", "Taobao", "Example", "Facebook" ];
console.warn(myArr);
Try it Yourself »