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This article mainly introduces how to use the typeof operator in js, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

1. The typeof operator returns a string indicating the type of uncomputed Operand.

2. Typeof is generally used to verify simple data types. The basic types returned are represented by strings, while in complex data types, function returns Function, and other data types return Object. Null is special, indicating an empty object.

Example

Typeof 1 / / 'number'typeof' 1' / / 'string'typeof undefined / /' undefined'typeof true / / 'boolean'typeof Symbol () / /' symbol'typeof null / / 'object'typeof [] / /' object'typeof {} / / 'object'typeof console / /' object'typeof function () {} / / 'function' Thank you for reading this article carefully I hope the article "how to use the typeof operator in js" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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