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document.createAttribute

The Document.createAttribute() method creates a new attribute node, and returns it. The object created a node implementing the Attr interface. The DOM does not enforce what sort of attributes can be added to a particular element in this manner.

The string given in parameter is converted to lowercase.

Syntax

attribute = document.createAttribute(name)

Parameters

name is a string containing the name of the attribute.

Return value

A Attr node.

Exceptions

INVALID_CHARACTER_ERR if the parameter contains invalid characters for XML attribute.

Example

var node = document.getElementById("div1");
var a = document.createAttribute("my_attrib");
a.value = "newVal";
node.setAttributeNode(a);
console.log(node.getAttribute("my_attrib")); // "newVal"

Specifications

Specification	Status	Comment
DOM The definition of 'Document.createAttribute()' in that specification.	Living Standard	Precised behavior with uppercase characters
Document Object Model (DOM) Level 3 Core Specification The definition of 'Document.createAttribute()' in that specification.	Obsolete	No change.
Document Object Model (DOM) Level 2 Core Specification The definition of 'Document.createAttribute()' in that specification.	Obsolete	No change.
Document Object Model (DOM) Level 1 Specification The definition of 'Document.createAttribute()' in that specification.	Obsolete	Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	Yes	44 44 4 — 44 The parameter was not converted to its lowercase variant.	Yes	Yes	Yes

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Yes	Yes	Yes	44 44 4 — 44 The parameter was not converted to its lowercase variant.	Yes	Yes	?