StylePropertyMapReadOnly: keys() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The StylePropertyMapReadOnly.keys() method returns a new array iterator containing the keys for each item in StylePropertyMapReadOnly

Syntax

js
keys()

Parameters

None.

Return value

A new Array.

Examples

In this example we use the keys() method to be able to access the properties within our Element.computedStyleMap().

js
// get a button element
const buttonEl = document.querySelector("button");
// we can retrieve all computed styles with `computedStyleMap`
const allComputedStyles = buttonEl.computedStyleMap();
// keys returns an iterable list of properties
const props = allComputedStyles.keys();
console.log(props.next().value); // returns align-content

Specifications

No specification found

No specification data found for api.StylePropertyMapReadOnly.keys.
Check for problems with this page or contribute a missing spec_url to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.

Browser compatibility