You may saw it in relation to arrays or objects. You may also use the Array#concat method for cloning: const original = Ĭoncat combines the two arrays and creates a new one.Īnother option available in modern JavaScript and Node.js is the spread operator. If you only want to clone a slice of the original array, you may pass the starting index as an argument to slice: const original = Please notice, slice creates a shallow clone, not a deep clone.

slice on the original array clones the array: const original = Cloning arrays in JavaScript is as straightforward as slice or concat.Ĭalling. You don’t need to iterate over the original array and push each item into another array. Retrieve the List of Supported Hash Algorithms Join an Array of Strings to a Single String Value Sort an Array of Objects in JavaScript, TypeScript or Node.jsĬheck If a Value Is an Array in JavaScript or Node.js Sort an Array of Strings in JavaScript, TypeScript or Node.js How to Reverse an Array in JavaScript and Node.js Retrieve a Random Item From an Array in JavaScript or Node.js

How to Exit, Stop, or Break an Array#forEach Loop in JavaScript or Node.js How to Get an Index in a for…of Loop in JavaScript and Node.js Split an Array Into Smaller Array Chunks in JavaScript and Node.js How to Exit and Stop a for Loop in JavaScript and Node.js Sort a Boolean Array in JavaScript, TypeScript, or Node.jsĬheck If an Array Contains a Given Value in JavaScript or Node.jsĪdd an Item to the Beginning of an Array in JavaScript or Node.jsĪppend an Item at the End of an Array in JavaScript or Node.js Sort an Array of Integers in JavaScript and Node.js Get an Array With Unique Values (Delete Duplicates)

How to Run an Asynchronous Function in Array.map()Ĭlone/Copy an Array in JavaScript and Node.js

Slice in node js