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JavaScript | gauhar's blog #4

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GauharChan opened this issue Sep 3, 2019 · 1 comment
Open

JavaScript | gauhar's blog #4

GauharChan opened this issue Sep 3, 2019 · 1 comment
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@GauharChan
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https://gauhar.gitee.io/2019/09/03/js%E7%AC%94%E8%AE%B0/

JavaScriptisNaN() isNaN() 函数用于检查其参数是否是非数字值。 如果参数值为 NaN 或字符串、对象、undefined等非数字值则返回 true, 否则返回 false。 如果参数是字符串，且内容是数字，会进行类型转换,使用的是Number()方法转换，转换为数字，所以返回false 0是false，1是true 1、数字形式的字符串。例如 “123”、”-3.14”
@stanlz06
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强啊 华哥

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