Element.prototype.getAttributeNames
Returns an array of attribute names of the element
Syntax
element.getAttributeNames()Return Value
An Array of strings representing the attribute names
Examples
const el = document.querySelector('input')!
const attrs = el.getAttributeNames()
console.log(attrs)function copyAttributes(source: Element, target: Element) {
source.getAttributeNames().forEach(name => {
target.setAttribute(name, source.getAttribute(name)!)
})
}const el = document.querySelector('[data-config]')!
const dataAttrs = el.getAttributeNames().filter(n => n.startsWith('data-'))
console.log(dataAttrs)Understanding Element.prototype.getAttributeNames
The Element.prototype.getAttributeNames method in JavaScript returns an array of attribute names of the element. It belongs to the Element object and is one of the most widely used methods for working with element values in modern JavaScript and TypeScript applications.
The method signature is element.getAttributeNames(). When called, it returns an array of strings representing the attribute names. Understanding when and how to use getAttributeNames() helps you write more expressive, readable code.
Common use cases for Element.prototype.getAttributeNames include data transformation, input validation, API response processing, and building reusable utility functions. It works well alongside related methods like dom-getattribute, dom-setattribute, dom-hasattribute, enabling you to chain operations together for complex data manipulation pipelines.
Browser support for Element.prototype.getAttributeNames is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. It is also fully supported in Node.js and Deno. For older environments, transpilation with Babel or a polyfill may be needed.
Browser Compatibility
Supported in all modern browsers (Chrome, Firefox, Safari, Edge) and Node.js. Part of the ECMAScript standard.
Related Methods
Element.prototype.getAttributeReturns the value of a specified attribute on the element, or null if the attribute does not exist
Element.prototype.setAttributeSets the value of an attribute on the specified element, adding it if it does not already exist
Element.prototype.hasAttributeReturns a boolean value indicating whether the specified element has the specified attribute or not
More Element Methods
Other methods in the Element object
Related Tools
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