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.

Note: 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
DOM Standard (DOM) # dom-document-createattribute

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`createAttribute`	1	12	44 1-44 The parameter was not converted to its lowercase variant.	6	≤12.1	1	1	18	44 4-44 The parameter was not converted to its lowercase variant.	≤12.1	1	1.0