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11道JS选择题，听说第一题就难倒80%的人
source link: https://juejin.im/post/5df643246fb9a016214cceae
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前言 坊间传闻，现在的前端面试者的简历都写精通JS，那就拿这些题考考，若不能全答对，就不要说精通了，这只是中高级前端的基础题而已。（注：文末附参考答案） JS选择题 1.请问JS中的基本数据类型有几种？（ ） A.5B.6C.7 2.下面代码的输出是什么？
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