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Day10:写出执行结果,并解释原因 #46
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答案 解析 |
结果应该是NaN吧,1+undefined=NaN |
typeof 返回的是字符串哦 |
理解这个意思,但是这种行为是写在规范里的么?找了一圈没找到,有没有什么出处? |
没有10年脑血栓应该写不出这种代码 |
@Genzhen 不太理解这句话的意思。 我测试在严格模式下,chrome 执行结果为 |
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