Get all unique values in a JavaScript array (remove duplicates)
With JavaScript 1.6 / ECMAScript 5 you can use the native filter method of an Array in the following way to get an array with unique values: function onlyUnique(value, index, array) { …
javascript - How to get unique values in an array - Stack Overflow
Mar 5, 2015 · You can enter array with duplicates and below method will return array with unique elements.
JavaScript – Unique Values (remove duplicates) in an Array
Nov 14, 2024 · There are various approaches to remove duplicate elements, that are discussed below. 1. Using set () – The Best Method. Convert the array into a Set in JS, which stores …
How to get distinct values from an array of objects in JavaScript?
Feb 28, 2013 · var unique = array .map(p => p.age) .filter((age, index, arr) => arr.indexOf(age) == index) .sort(); // sorting is optional // or in ES6 var unique = [...new Set(array.map(p => …
JavaScript Program to Check if an Array Contains only Unique …
Jul 2, 2024 · Using `Array.filter()` with a callback that checks if an element’s index is equal to its first occurrence’s index in the array (`Array.indexOf()`), the function filters out duplicate …
How to Get Unique Values from an Array in JavaScript
Jun 23, 2023 · In this post, we will be looking at the following 3 ways to get unique values from an array in JavaScript: By using the Set object; By using the filter() array method; By using the …
Get All Unique Values in a Javascript Array (Remove Duplicates)
Sep 3, 2023 · One of the easiest ways to remove duplicate values from an array is by using the Set object, which only allows unique values. We can convert the array to a Set and then …
Three methods to get unique values from arrays in ES6.
Mar 30, 2020 · The Array.filter function takes a callback whose first parameter is the current element in the operation. It also takes an optional index parameter and the array itself. …
Getting Unique Array Values in Javascript and Typescript
Aug 11, 2021 · const array: string[] = [ 'Scooby', 'Dooby', 'Dooby', 'Doo' ]; const uniques: string[] = []; for (const value of array) {let exists = false; for (const unique of uniques) { if (unique === …
Getting All Unique Values (Remove All Duplicates) from Array in JavaScript
Jun 10, 2024 · Here are five ways to get all unique values from an array in JavaScript : Using new Set() constructor ,Using filter() + indexOf() methods ,Using filter() method , Using Set and …