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                | JScript? | [語言參考](#) | |-----|-----| # typeof 運算符 返回一個用來表示表達式的數據類型的字符串。 `**typeof**[**(**)*expression*[**]**] ;` *expression* 參數是需要查找類型信息的任意[表達式](#)。 #### 說明 **typeof** 運算符把類型信息當作字符串返回。**typeof** 返回值有六種可能: "number," "string," "boolean," "object," "function," 和 "undefined." **typeof** 語法中的圓括號是可選項。 #### 要求 [版本 1](#) #### 請參閱 [運算符優先級](#) | [運算符總結](#) [? 2000 Microsoft Corporation 版權所有。保留所有權利。使用規定。](#)
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