https://www.imooc.com/article/13489

https://github.com/zhansingsong/js-leakage-patterns/blob/master/%E5%B8%B8%E8%A7%81%E7%9A%84JavaScript%E5%86%85%E5%AD%98%E6%B3%84%E9%9C%B2/%E5%B8%B8%E8%A7%81%E7%9A%84JavaScript%E5%86%85%E5%AD%98%E6%B3%84%E9%9C%B2.md