javascript 内存和连等赋值

JavaScript深入之内存空间详细图解

https://juejin.im/post/5bf4c3eff265da613356348a

理解javascript中的连续赋值

https://www.cnblogs.com/Gavin257/p/9562214.html

JavaScript 的连续赋值

https://lichangwei.github.io/2018/12/12/continuous-assignment/