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标题: typeof用来检测变量类型 [打印本页]

作者: admin 时间: 2011-9-30 10:21 标题: typeof用来检测变量类型

typeof可能取值： "number," "string," "boolean," "object," "function," 和 "undefined."
null,[...],{...} 得值 object, 其中null 为object 应引起注意!

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