如何实现文件下载？

[fajianren]

请教，能否以及如何实现：

1. 把模仿的文件下载到本地？
2. 把模仿的文件夹下载到本地？
3. 预览视频、音乐、图片？
4. 与「elFinder-2.1.62」对接？
   

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Please tell me if and how to implement:

1. Download the imitated file locally? （For example, right-click the file and select Download）
2. Download the imitated folder to the local?
3. Preview videos, music, pictures?
4. Connect with "elFinder-2.1.62"?

thanks！