by Sai gowtham

How to sort an array by string length in JavaScript

In this tutorial, we will learn how to sort an array of strings according to its string length in JavaScript.

Consider, we have the following array with strings.

const array = ["hello", "hi", "water", "pop"];

To sort the array by its string length, we can use the Array.sort() method by passing compare function as an argument.

If the compare function return value is a.length - b.length, it sorts the array in ascending order.

const array = ["hello", "hi", "water", "pop"];

const asc = array.sort((a,b) => a.length - b.length);
console.log(asc); // ["hi", "pop", "hello", "water"]

If the compare function return value is b.length - a.length, it sorts the array in descending order.

const array = ["hello", "hi", "water", "pop"];

const desc = array.sort((a,b) => b.length - a.length);
console.log(desc); // ["hello", "water", "pop", "hi"]

Top Udemy Courses

JavaScript - The Complete Guide 2020 (Beginner + Advanced)
JavaScript - The Complete Guide 2020 (Beginner + Advanced)
45,614 students enrolled
52 hours of video content
View Course
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
284,472 students enrolled
40 hours of video content
View Course
Vue JS 2 - The Complete Guide (incl. Vue Router & Vuex)
Vue JS 2 - The Complete Guide (incl. Vue Router & Vuex)
130,921 students enrolled
21 hours of video content
View Course