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Document: createAttribute() method - Web APIs | MDN
Document: createAttribute() method
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.
The Document.createAttribute() method creates a new
attribute node, and returns it. The object created is 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
js
createAttribute(name)
Parameters
name-
A string containing the name of the attribute.
Return value
A Attr node.
Exceptions
InvalidCharacterErrorDOMException-
Thrown if the
namevalue is not a valid XML name; for example, it starts with a number, hyphen, or period, or contains characters other than alphanumeric characters, underscores, hyphens, or periods.
Examples
js
const node = document.getElementById("div1");
const a = document.createAttribute("my_attrib");
a.value = "newVal";
node.setAttributeNode(a);
console.log(node.getAttribute("my_attrib")); // "newVal"
Specifications
| Specification |
|---|
| DOM # dom-document-createattribute |
Browser compatibility
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