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犀牛书第五版读书笔记——Chapter 5. Expressions and Operators

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1.经javascript解释器能计算出一个有效值的语句,即javascript表达式,比如17,"hello",i,i+3等,都是表达式

2.操作符==在可能的情况下,会自动进行类型转换。===则不会

。。这章内容太少了,实在没啥好记的了
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