Note: This feature is available in Web Workers.
The delete() method of the FontFaceSet interface removes a font from the set.
Font faces that were added to the set using the CSS @font-face rule remain connected to the corresponding CSS, and cannot be deleted.
delete(font)fontA FontFace to be removed from the set.
A boolean value which is true if the deletion was successful, and false otherwise.
In the following example a new FontFace object is created and then deleted from the FontFaceSet.
const font = new FontFace("MyFont", 'url("myFont.woff2")');
document.fonts.delete(font);