This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The Node.getUserData() method returns any user DOMUserData set previously on the given node by Node.setUserData().

The Node.setUserData and Node.getUserData methods are no longer available from Web content. Element.dataset or WeakMap can be used instead.


userData = someNode.getUserData(userKey);


  • userKey is the key to choose the specific data sought for the given node. More than one key may have been assigned on a given node, containing its own value.


var d = document.setUserData('key', 15, null);
console.log(document.getUserData('key')); // 15


Specification Status Comment
The definition of 'Node' in that specification.
Living Standard Removed from the specification.
Document Object Model (DOM) Level 3 Core Specification
The definition of 'Node.getUserData()' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support 1.0 (1)
No support 22.0[1]
? No support No support
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 1.0 (1.7 or earlier)
No support 22.0[1]
(Yes) No support No support

[1] The method is still available from chrome scripts.

See also

Document Tags and Contributors

 Last updated by: jwhitlock,