0.typescript-相关文档 1.官网 https://www.tslang.cn/docs/home.html 2.入门教程 http://www.cnblogs.com/tansm/p/TypeScript_Handbook.html https://ts.xcatliu.com/ https://www.w3cschool.cn/typescript/typescript-tutorial.html 3.中文文档 https://zhongsp.gitbooks.io/typescript-handbook/content/index.html 4.慕课网 http://www.imooc.com/learn/763 5.let定义变量相关知识 http://www.cnblogs.com/LiangSW/p/6252594.html http://www.cnblogs.com/junxian_chen/p/5935420.html http://es6.ruanyifeng.com/#docs/let