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JavaScript中indexOf方法的应用与结果解析

Aug 28, 20232 min read

这行代码在一个数字数组 [1, 2, 3, 4, 5] 中搜索元素 '3'。由于 '3' 不是数值类型,而是字符串类型,因此在进行查找时,要将它隐式地转换为数字类型。由于该数组中确实包含值为 3 的元素,因此该方法会返回该元素的索引 2。所以,这行代码的结果是 2。

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