如何将图片从画布复制到剪贴板？

function copyImageToClipboard(image) {
  const canvas = document.createElement('canvas');
  const ctx = canvas.getContext('2d');
  canvas.width = image.width;
  canvas.height = image.height;
  ctx.drawImage(image, 0, 0);
  const dataURL = canvas.toDataURL('image/png');
  const link = document.createElement('a');
  link.href = dataURL;
  link.setAttribute('download', 'image.png');
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);
}