Lodash _.union() Method Last Updated : 02 Sep, 2024 Comments Improve Suggest changes Like Article Like Report Lodash _.union() method is used to take n number of arrays and create an array of unique values in order, from all given arrays using SameValueZero for equality comparisons.Syntax: _.union(*arrays);Parameters: arrays: This parameter holds arrays to inspect.Return Value: This method is used to return the new array of combined values.Example 1: In this example, we are passing two different arrays into the _.union() method and printing the result in the console. JavaScript // Requiring the lodash library const _ = require("lodash"); // Use of _.union() method let gfg = _.union([20, 12], [8, 15, 6]); // Printing the output console.log(gfg); Output:[20, 12, 8, 15, 6]Example 2: In this example, we are passing three different arrays into the _.union() method and printing the result in the console. JavaScript // Requiring the lodash library const _ = require("lodash"); // Use of _.union() method let gfg = _.union([1, 2, 3], [3, 4, 5], [6, 2, 7]); // Printing the output console.log(gfg); Output:[1, 2, 3, 4, 5, 6, 7] Comment More infoAdvertise with us Next Article Introduction to JavaScript S sanjoy_62 Follow Improve Article Tags : JavaScript Web Technologies JavaScript-Lodash Lodash Array Similar Reads JavaScript Tutorial JavaScript is a programming language used to create dynamic content for websites. It is a lightweight, cross-platform, and single-threaded programming language. It's an interpreted language that executes code line by line, providing more flexibility.Client Side: On the client side, JavaScript works 11 min read JavaScript BasicsIntroduction to JavaScriptJavaScript is a versatile, dynamically typed programming language that brings life to web pages by making them interactive. 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