学习JS的一本有趣的书，最后学到的不止是language，更是Programming

Regular expressions are a sharp tool with an awkward handle. They simplify some tasks tremendously but can quickly become unmanageable when applied to complex problems. -- chapter 9, Eloquent JavaScript 看到的大实话，真感动！

At the time of writing, there are more than half a million different packages available on NPM. A large portion of those are rubbish, I should mention, but almost every useful, publicly available package can be found on there.

-- chapter 10

又一句大实话