Js如何实现使用Fetch进行文件下载？

//创建一个a链接

const link = document.createElement("a");

link.style.display = 'none';

var fileName = 'text.docx';

formData.append('your_key', your_value);

var downloadUrl = apiBaseUri + '/file/download';

fetch(downloadUrl, {method: 'POST', body: formData})

.then((res) => res.blob())

.then((blob) => {

    link.href = URL.createObjectURL(blob);

    link.download = fileName; 

    document.body.appendChild(link);

    link.click();

    document.body.removeChild(link);

    window.URL.revokeObjectURL(downloadUrl);

});