How JS is rounded up

This article mainly introduces how to integrate 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 the editor take you to understand it.

ParseInt () this method removes the decimal after the decimal point, leaving only the integer part. If the number to be rounded is positive, it is similar to Math.floor (); when it is negative, it is similar to Math.ceil ()

Math.round () is rounded

Math.floor () is rounded down such as Math.floor (1.8) returns 1tsmath. Returns (- 1.8) returns-2

Math.ceil () is rounded up such as Math.ceil (1.8) returns 2bot Math.ceil (- 1.8) returns-1

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