How to round a number to the nearest multiple of a given value in JavaScript

In this Article we will go through how to round a number to the nearest multiple of a given value only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const roundNearest = (value, nearest) => Math.round(value / nearest) * nearest;

roundNearest(100, 30);      // 90
roundNearest(200, 30);      // 210
roundNearest(200, 40);      // 200