Encode a file form html <input>

[lazaro92]

Hi,
when I chose a file from an input tag of html, I have acces to an array of File object. Every File object has tihs elements:

{ lastModified: 42342342 lastModifiedDate: Date ... name: "272.jpg" size: 46675 type: "image/jpeg" }
How can I access to the file and do a $base64.encode(file) of it's data?