How to convert an array of strings to numbers in JavaScript

In this Article we will go through how to convert an array of strings to numbers 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 toNumbers = arr => arr.map(Number);

const toNumbers = arr => arr.map(x => +x);

toNumbers(['2', '3', '4']);     // [2, 3, 4]