js 下载图片

fetch('http://127.0.0.1:3024/images/0.jpg').then(res => res.blob().then(blob => {
var a = document.createElement('a');
var url = window.URL.createObjectURL(blob);
var filename = 'test.jpg';
a.href = url;
a.download = filename;
a.click();
window.URL.revokeObjectURL(url);
}))