FontFace: load() メソッド

load()

<canvas id="js-canvas"></canvas>

const canvas = document.getElementById("js-canvas");
// Google フォントから "Bitter" フォントを読み込み
const fontFile = new FontFace(
  "FontFamily Style Bitter",
  "url(https://fonts.gstatic.com/s/bitter/v7/HEpP8tJXlWaYHimsnXgfCOvvDin1pK8aKteLpeZ5c0A.woff2)",
);
document.fonts.add(fontFile);
fontFile.load().then(
  () => {
    // フォントを正常に読み込めた
    canvas.width = 650;
    canvas.height = 100;
    const ctx = canvas.getContext("2d");
    ctx.font = '36px "FontFamily Style Bitter"';
    ctx.fillText("Bitter font loaded", 20, 50);
  },
  (err) => {
    console.error(err);
  },
);