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