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GeezerVison is showing developer.mozilla.org — Document: xmlEncoding property - Web APIs | MDN

Document: xmlEncoding property

Deprecated

Avoid using this feature in new projects. This feature may be a candidate for removal from web standards or browsers.

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Returns the encoding as determined by the XML declaration. Should be null if unspecified or unknown.

Warning: Do not use this attribute; it has been removed from the DOM Level 4 specification and is no longer supported in Firefox 10.0.

Consider the following XML Declaration:

xml
<?xml version="1.0" encoding="UTF-16"?>

Then, the result should be "UTF-16".

Specifications

Specification
DOM
# dom-document-xmlencoding

Browser compatibility

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This page was last modified on Aug 21, 2026 by MDN contributors.

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