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.
js
getAttribute(attributeName)
attributeName is the name of the attribute whose value you want to get.A string containing the value of attributeName.
html
<!-- example div in an HTML DOC -->
<div id="div1">Hi Champ!</div>
js
// 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
When called on an HTML element in a DOM flagged as an HTML document, getAttribute() lower-cases its argument before proceeding.
All modern web browsers return null when the specified attribute does not exist on the specified element.
For security reasons, CSP nonces from non-script sources, such as CSS selectors, and .getAttribute("nonce") calls are hidden.
js
let nonce = script.getAttribute("nonce");
// returns empty string
Instead of retrieving the nonce from the content attribute, use the nonce property:
js
let nonce = script.nonce;
| Specification |
|---|
| DOM Standard # ref-for-dom-element-getattribute① |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getAttribute |
1 | 12 | 1 | 5 | 8 | 1 | 4.4 | 18 | 4 | 10.1 | 1 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute