ReadonlysizeThe size read-only property of the StylePropertyMapReadOnly interface returns an unsigned long integer containing the size of the StylePropertyMapReadOnly object.
The append() method of the StylePropertyMap interface adds the passed CSS value to the StylePropertyMap with the given property.
The clear() method of the StylePropertyMap interface removes all declarations in the StylePropertyMap.
The delete() method of the StylePropertyMap interface removes the CSS declaration with the given property.
OptionalthisArg: anyThe get() method of the StylePropertyMapReadOnly interface returns a CSSStyleValue object for the first value of the specified property.
The getAll() method of the StylePropertyMapReadOnly interface returns an array of CSSStyleValue objects containing the values for the provided property.
The has() method of the StylePropertyMapReadOnly interface indicates whether the specified property is in the StylePropertyMapReadOnly object.
The set() method of the StylePropertyMap interface changes the CSS declaration with the given property.
The
StylePropertyMapinterface of the CSS Typed Object Model API provides a representation of a CSS declaration block that is an alternative to CSSStyleDeclaration.MDN Reference