CSSStyleDeclaration.setProperty(propertyName, value, priority)

none

Used to set a property value and priority within this declaration block. Note: setProperty() permits to modify a property or add a new one in the declaration block. Any call to this method may modify the order of properties in the item() method.

DOMString propertyName

-

The name of the CSS property. See the CSS property index.

DOMString value

-

The new value of the property.

DOMString priority

-

The new priority of the property (e.g. "important") or the empty string if none.

nothing

DOMException SYNTAX_ERR

Raised if the specified value has a syntax error and is unparsable.

DOMException NO_MODIFICATION_ALLOWED_ERR

Raised if this declaration is readonly or the property is readonly.