StyleSheet.disabled

The disabled property of the StyleSheet interface determines whether the style sheet is prevented from applying to the document.

A style sheet may be disabled by manually setting this property to true or if it's an inactive alternative style sheet. Note that disabled == false does not guarantee the style sheet is applied (it could be removed from the document, for instance).

bool = stylesheet.disabled

// If the stylesheet is disabled...
if (stylesheet.disabled) {
  // ... apply styles in-line.
}