一些资料地址

[JS原型]：
(https://www.cnblogs.com/libin-1/p/5820550.html)

[JS闭包及内存]：
(https://yangbo5207.github.io/wutongluo/ji-chu-jin-jie-xi-lie/yi-3001-nei-cun-kong-jian-xiang-jie.html)

[爬虫]：
(https://cuiqingcai.com/927.html)