It takes two optional arguments: the start index (inclusive) and the end index (exclusive). This method returns a shallow copy of a portion of the array into a new array object, without modifying the original array. The slice() method does not modify the original array. In JavaScript, you can slice an array using the slice () method. The array.slice() method in JavaScript is used to get the part of an array from the start index to the end index. The following are examples of shallow copying an array in JavaScript: Copying array using the slice() method Any changes to the source or copy will not affect the other object.Īll of JavaScript's built-in array copying methods, such as array.slice(), ncat(), om(), and the spread ('.') operator make shallow copies.

Deep copy: when copying an array with objects, the source and copy become completely independent.

In this case, the source or copy changes can also affect the second object.

Shallow copy: when copying an array with objects, the object reference is copied into a new reference variable, and both point to the same object in memory.

There are two ways to copy arrays in JavaScript: You can also get a sum of array elements, convert string to array, convert an array to string, and convert an array to JSON.

JavaScript provides a set of built-in functions for containing, joining, slicing, reversing, inserting, merging, reducing, clearing, and cloning arrays. Each array element has a serial number (index), allowing you to access the element by its index. The JavaScript array is created using square brackets '' or with the 'new Array()' constructor.

JavaScript array is a collection of data that is designed to store multiple values in a single variable. The JavaScript scripting language transforms static HTML web pages into interactive pages by dynamically updating content, validating forms, playing videos, and controlling media. The array returned by slice() returns a shallow copy, meaning that any references within the original array will just be copied over as-is, and won't allocate memory for completely new objects.The JavaScript programming language is used in browsers and on the server ( Node.js), making it a universal language across devices and platforms.

Slice an array in javascript