{"id":11909,"date":"2020-10-29T01:16:30","date_gmt":"2020-10-29T08:16:30","guid":{"rendered":"https:\/\/careerkarma.com\/blog\/?p=11909"},"modified":"2023-12-01T04:03:28","modified_gmt":"2023-12-01T12:03:28","slug":"javascript-splice","status":"publish","type":"post","link":"https:\/\/careerkarma.com\/blog\/javascript-splice\/","title":{"rendered":"JavaScript Splice: How to Use It"},"content":{"rendered":"\n

The JavaScript splice() method modifies an array. It is used to add new elements to an array or remove or change existing ones. splice() changes the array on which it is used. It does not create a new array.<\/em><\/p>\n\n\n\n

It\u2019s common to want to add or remove items from a list of existing elements. For example, say you have a program that returns information about employees. One employee is on leave. You may want to remove them from your program temporarily.<\/p>\n\n\n\n

You can use splice() to add items to, remove items from, or modify items in an array. This method allows you to add or remove items from an array. In this tutorial, we\u2019ll demonstrate how the splice() method works and how to use it in your JavaScript code.<\/p>\n\n\n\n

Array Refresher<\/strong><\/h2>\n\n\n\n

The contents of an array can include numbers, strings, and Booleans. In JavaScript, you can use an array<\/a> to store multiple pieces of information instead of storing data in multiple variables. For example, if you have a class of ten students, you can create an array to list each of their names.<\/p>\n\n\n\n

Arrays can be accessed using their index numbers, which begin at 0. Here’s an example array:<\/p>\n\n\n\n

let arr = [\u201cexample\u201d, \u201carray\u201d, \u201cof\u201d, \u201cstrings\u201d]<\/pre><\/div>\n\n\n\n
JavaScript splice()<\/strong><\/h2>\n\n\n\n
The JavaScript splice() method adds, changes, or removes an item from an array. splice() modifies an existing array.<\/p>\n\n\n\n
Let’s take a look at the syntax for splice():<\/p>\n\n\n\n
list_name.splice(index_to_add_or_remove, items_to_remove, items_to_add...) <\/pre><\/div>\n\n\n\n
splice() accepts three parameters:<\/p>\n\n\n\n