StylePropertyMap.append()

Experimental

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

The append() method of the StylePropertyMap interface adds the passed CSS value to the StylePropertyMap with the given property.

Syntax

StylePropertyMap.append(property,value)

Parameters

property
An identifier indicating the stylistic feature (e.g. font, width, background color) to add.
value
The value the given property should have.

Return value

undefined.

Example

This example shows an extra background image value being added to the background-image property of the element, using HTMLElement.attributeStyleMap.

// get the button element
const buttonEl = document.querySelector('button');

// append another value to the background-image property set on the attribute
buttonEl.attributeStyleMap.append('background-image', 'linear-gradient(180deg, blue, black');

Specifications

Specification Status Comment
CSS Typed OM Level 1
The definition of 'append()' in that specification.
Working Draft Initial definition.

Browser compatibility

BCD tables only load in the browser