Element.getAttribute()

The getAttribute() method of the Element interface returns the value of a specified attribute on the element.

If the given attribute does not exist, the value returned will either be null or "" (the empty string); see Non-existing attributes for details.

Syntax

getAttribute(attributeName)

Parameters

  • attributeName is the name of the attribute whose value you want to get.

Return value

A string containing the value of attributeName.

Examples

<!-- example div in an HTML DOC -->
<div id="div1">Hi Champ!</div>
// in a console
const div1 = document.getElementById('div1');
//=> <div id="div1">Hi Champ!</div>

const exampleAttr= div1.getAttribute('id');
//=> "div1"

const align = div1.getAttribute('align')
//=> null

Description

Lower casing

When called on an HTML element in a DOM flagged as an HTML document, getAttribute() lower-cases its argument before proceeding.

Non-existing attributes

All modern web browsers return null when the specified attribute does not exist on the specified element.

Retrieving nonce values

For security reasons, CSP nonces from non-script sources, such as CSS selectors, and .getAttribute("nonce") calls are hidden.

let nonce = script.getAttribute('nonce');
// returns empty string

Instead of retrieving the nonce from the content attribute, use the nonce property:

let nonce = script.nonce;

Specifications

Specification
DOM Standard
# ref-for-dom-element-getattribute①

Browser compatibility

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