FontFaceSet.load()

The load() method of the FontFaceSet forces all the fonts given in parameters to be loaded.

result = aFontFaceSet.load(font);

result = aFontFaceSet.load(font, text);

A Promise of an Array of FontFace loaded. The promise is fulfilled when all the fonts are loaded; it is rejected if one of the fonts failed to load.

• font: a font specification using the CSS value syntax, e.g. "italic bold 16px Roboto"
• text: limit the font faces to those whose Unicode range contains at least one of the characters in text. This does not check for individual glyph coverage.

// returns a promise that will be fulfilled or rejected according the success to load MyFont
// The code in 'then' can assume the availability of that font.

document.fonts.load("12px MyFont", "ß").then(…);