getElementsByTagNameNS

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W3C Recommendation

Summary

Gets a live HTMLCollection of the elements with the specified tag name and namespace.

var elements = document.getElementsByTagNameNS(namespaceURI, localName);

Data-type: String

The namespace URI that defines the desired elements or an asterisk (*) to match all namespaces with the document, or null.

Data-type: String

The name of the desired element or an asterisk (*) to match all elements with the specified namespace.

Returns an object of type Object.

A live HTMLCollection of elements.

Needs Examples: This section should include examples.

This method should not be used. For a more performant alternative, see the notes.

Use this method to get a live list of elements with a specified name and namespace.

For performance reasons, querySelectorAll is preferred, because it gets a static list.
This method returns a live element list that gets updated whenever an element is added or removed from the document, this has performance implications and may result in unexpected errors (removing elements within a for loop while caching the length of the collection).
If namespaces are irrelevant in the context, getElementsByTagName can be used (but it is also not recommended, see the first two notes).

Specification	Status	Related Changes
Document Object Model (DOM) Level 3 Core	Recommendation	Section 1.4
Document Object Model (DOM) Level 2 Core	Recommendation	Section 1.2
DOM	Living Standard	Section 6.5, 6.8

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	?	?	?	?	?

Feature	Android	BlackBerry	Chrome for mobile	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Opera Mini	Safari Mobile
Basic support	?	?	?	?	?	?	?	?

This article contains content originally from external sources.

Portions of this content come from the Microsoft Developer Network: [Windows Internet Explorer API reference Article]