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Showing content from https://developer.mozilla.org/en-US/docs/Web/API/MutationRecord/attributeNamespace below:

MutationRecord: attributeNamespace property - Web APIs

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1. Web
2. Web APIs
3. MutationRecord
4. attributeNamespace

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1. Document Object Model (DOM)
2. MutationRecord
3. Instance properties
   1. addedNodes
   2. attributeName
   3. attributeNamespace
   4. nextSibling
   5. oldValue
   6. previousSibling
   7. removedNodes
   8. target
   9. type
4. Related pages for DOM
   1. AbortController
   2. AbortSignal
   3. AbstractRange
   4. Attr
   5. CDATASection
   6. CharacterData
   7. Comment
   8. CustomEvent
   9. DOMError Deprecated
   10. DOMException
   11. DOMImplementation
   12. DOMParser
   13. DOMPoint
   14. DOMPointReadOnly
   15. DOMRect
   16. DOMTokenList
   17. Document
   18. DocumentFragment
   19. DocumentType
   20. Element
   21. Event
   22. EventTarget
   23. HTMLCollection
   24. MutationObserver
   25. NamedNodeMap
   26. Node
   27. NodeIterator
   28. NodeList
   29. ProcessingInstruction
   30. Range
   31. StaticRange
   32. Text
   33. TextDecoder
   34. TextEncoder
   35. TimeRanges
   36. TreeWalker
   37. XMLDocument
5. Guides
   1. Introduction to the DOM
   2. Using the Document Object Model
   3. Attribute reflection
   4. Traversing an HTML table with JavaScript and DOM Interfaces
   5. Locating DOM elements using selectors
   6. Working with events
   7. Examples of web and XML development using the DOM

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Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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The MutationRecord read-only property attributeNamespace is the namespace of the mutated attribute in the MutationRecord observed by a MutationObserver.

If the record's type is attributes, the property is a string representing the namespace of the mutated attribute of the mutation target. The value is null otherwise.

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This page was last modified on Apr 7, 2023 by MDN contributors.

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