round a number to the nearest integer in typescript

To round a number to the nearest integer, you can use the Math.round() method in TypeScript.

index.ts
const myNumber: number = 3.14;
const roundedNumber: number = Math.round(myNumber); // roundedNumber will be 3
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The Math.round() method rounds the number to the nearest integer, using the standard rounding rules. If the fractional part of the number is less than 0.5, the result is rounded down. If the fractional part is 0.5 or greater, the result is rounded up.

You can also use the Math.floor() method to always round the number down to the nearest integer, or the Math.ceil() method to always round the number up to the nearest integer.

index.ts
const myNumber: number = 3.14;
const roundedDown: number = Math.floor(myNumber); // roundedDown will be 3
const roundedUp: number = Math.ceil(myNumber); // roundedUp will be 4
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