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This article will explain in detail how JavaScript uses the isInteger method. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

IsInteger

There is a more concise way to know whether the value is an integer. JavaScript's Number API provides a method called isInteger () to do this. This is very useful. You'd better know about it.

Let mynum = 123 is a number mynumStr = "123"; console.log (`${mynum} is a number?`, Number.isInteger (mynum)); console.log (`${mynumStr} is a number?`, Number.isInteger (mynumStr)); copy code

Output result:

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