js获取后端图片生成File对象

let url = GLOBAL.BACKENDURL + "/image/" + name;
fetch(url, {
    method: "GET",
    mode: "cors",
})
.then((res) => {
    return res.blob();
})
.then((blob) => {
    let imgFile = new File([blob], name, { type: "image/png" });
    return imgFile;
});