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This article mainly introduces how js converts Number type, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let Xiaobian take you to understand it together.

Convert Number Type

We can convert a variable of type string back to a variable of type number using the addition operator +.

let int = "15";int = +int;console.log(int); // Result: 15console.log(typeof int); Result: "number"

In some contexts,+ will be interpreted as a concatenation operator rather than an addition operator. When this happens (you want to return an integer, not a floating point), you can use two tilde signs:~~. (Note that English format is required)

A tilde ~, called the bitwise not operator, is equivalent to- n - 1. So ~15 = -16.

Use two ~~ valid negation operations. This is because- (- n - 1) - 1 = n + 1 - 1 = n. That means ~-16 = 15

const int = ~~"15" console.log (int); // Result: 15console.log(typeof int); Result: "number" Thank you for reading this article carefully. I hope that the article "js how to convert Number type" shared by Xiaobian will be helpful to everyone. At the same time, I hope everyone will support it a lot. Pay attention to the industry information channel. More relevant knowledge is waiting for you to learn!

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