StylePropertyMap: append() method
The append() method of the
StylePropertyMap interface adds the passed CSS value to the
StylePropertyMap with the given property.
Syntax
js
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
None (undefined).
Examples
This example shows an extra background image value being added to the
background-image property of the element, using
HTMLElement.attributeStyleMap.
js
// 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 |
|---|
| CSS Typed OM Level 1 # dom-stylepropertymap-append |
Browser compatibility
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