# XML DOM isSupported() Method

Node Object

## Definition and Usage

The isSupported() method checks whether the DOM implementation supports a specific feature and that the feature is supported by the specified node.

## Browser Support

The isSupported() method is supported in all major browsers.

Note: Internet Explorer 9 and earlier does not support this method.

## Syntax

nodeObject.isSupported(feature,version)

## Parameters

Parameter | Type | Description
--- | --- | ---
feature | String | Required. Specifies the name of the feature to test
version | String | Optional. Specifies the version number of the feature to test

## Return Value

Type | Description
--- | ---
Boolean | true if the feature is supported on this node, otherwise false

## Technical Details

DOM Version | Core Level 2 Node Object

## Example

The following code fragment loads "books.xml" into xmlDoc using loadXMLDoc(), and checks whether the DOM implementation supports a specific feature:

## Example

xmlDoc = loadXMLDoc("books.xml");
x = xmlDoc.getElementsByTagName("book")[1];
document.write(x.isSupported("Events", "2.0"));
Try it yourself »

Node Object

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