web开发摄像头拍照程序，使用一个web控件，使用js，保存为jpgbase64编码，并显示到图片中-web camera photo development process, using a web control, using js, save for the jpgbase64 coding, and display the picture

he application will be written entirely in Javascr ipt, CSS and HTML. It will not be relying on a specific Javascr ipt framework, though it might rely temporarily on certain libraries for scaffolding purposes. The goal being to stay as close to the p