1、js中运算符的优先级
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Operators/Operator_Precedence
2、Css清除浮动的四种方式及其原理理解
https://juejin.im/post/59e7190bf265da4307025d91
十个一篇,继续努力
原文:https://www.cnblogs.com/bank-mounte/p/12685776.html