摘要：
在国外的一篇博客文章上有下面一些题目，刚开始做的时候错了4个，虽然涉及的知识点不算非常多，但的确有很多细节方面平时需要多加注意的，现在记录下每个题目背后所需要的知识。Quiz mainly focuses on knowledge of scoping, function expressions (and how they differ from function declarations), references, process of variable and function declaration, order of evaluation, and a couple more thin 阅读全文