How to use uniqBy Method In Lodash
The uniqBy method in Lodash removes duplicate elements from an array based on a specified criterion. It allows us to define a function that extracts a unique identifier from each element, enabling customized handling of duplicate removal.
Example: In this example, we use the uniqBy method to remove duplicate elements from an array based on a custom criterion defined by a function. The function extracts the length of each string element as the unique identifier.
const _ = require('lodash');
let arr = ["apple", "mango", "apple", "orange", "mango", "mango"];
let res = _.uniqBy(arr, (element) => element.length);
console.log(res);
Output:
[ 'apple', 'mango', 'orange' ]
How to Remove Duplicate Elements from an Array using Lodash ?
Removing duplicate elements from an array is necessary for data integrity and efficient processing. The approaches implemented and explained below will use the Lodash to remove duplicate elements from an array.
Table of Content
- Using uniq method
- Using groupBy and map methods
- Using xor function
- Using uniqBy Method
Run the below command before running the code on your system:
npm i lodash