模块化现代文件上传器。
引用代码
<link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/uppy/3.21.0/uppy.min.css">\n<script src="https://cdn.bootcdn.net/ajax/libs/uppy/3.21.0/uppy.min.js"></script>资源地址
https://cdn.bootcdn.net/ajax/libs/uppy/3.21.0/uppy.min.js