html5 绘图工具
https://www.tangbc.com/article/problems-encountered-in-implementing-mvvm-framework
http://www.ichartjs.com/
https://jsplumbtoolkit.com/
http://www.williammalone.com/articles/create-html5-canvas-javascript-drawing-app/#demo-simple 画图工具
webSCada : http://sh.briztop.ru/
https://habrahabr.ru/post/325640/