StylePropertyMapReadOnly.keys() - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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

Syntax

StylePropertyMapReadOnly.keys()

Parameters

None.

Return value

A new Array.

Example

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

// 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

Browser compatibility

BCD tables only load in the browser