Tag: group

JavaScript continuously enriches its standard library on strings and arrays. In today’s post, I will be discussing the new array group proposal which is currently at stage 3. This new proposal introduces new methods array.groupBy() and array.groupByToMap(). You can get their polyfills from the core-js library. Let’s see examples below to understand how these methods work.   Read this blog post or watch the video below to learn more about the JavaScript array.groupBy() and array.groupByToMap() method. array.groupBy() Let’s say you have the below list of countries, where each country is an object with 2 properties name and continent. const countries =...