How JavaScript uses + to convert variables into numbers

This article mainly introduces how JavaScript uses + to convert variables into numbers. It 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.

Use + to convert variables to numbers

This conversion is super simple, but it only works with numeric strings, otherwise NaN (not numbers) is returned. Consider this example:

function toNumber(strNumber) { return +strNumber; } console.log(toNumber("1234")); // 1234 console.log(toNumber("ACB")); // NaN

This conversion can also be applied to Date, in which case it returns a timestamp:

console.log(+new Date()) // 1461288164385 Thank you for reading this article carefully. I hope that the article "How to use + to convert variables into numbers" shared by Xiaobian will be helpful to everyone. At the same time, I hope that everyone will support it a lot. Pay attention to the industry information channel. More relevant knowledge is waiting for you to learn!