阿里云oss下载图片跨域问题

function downLoad(imgSrc, name) {
  const image = new Image();
  // 解决跨域 Canvas 污染问题
  image.setAttribute("crossOrigin", "anonymous");
  image.onload = () => {
    const canvas = document.createElement("canvas");
    canvas.width = image.width;
    canvas.height = image.height;
    const context = canvas.getContext("2d");
    context.drawImage(image, 0, 0, image.width, image.height);
    canvas.toBlob((blob) => {
      const url = URL.createObjectURL(blob);
      const a = document.createElement("a");
      a.download = name || "photo";
      a.href = url;
      a.click();
      a.remove();
      URL.revokeObjectURL(url);
    });
  };
  image.src = imgSrc;
}