This content originally appeared on DEV Community and was authored by Labby
Introduction
This article covers the following tech skills:
In this lab, we will explore how to manipulate arrays in JavaScript by creating a function that returns all the elements of an array except the last one. We will use the Array.prototype.slice() method to achieve this and learn how to slice and extract elements from arrays. This lab will help us understand the fundamentals of working with arrays in JavaScript.
How to Get an Array Without the Last Element
To practice coding, open the Terminal/SSH and type node. Here's how you can return all the elements of an array except the last one:
- Use
Array.prototype.slice()to return all the elements of the array except the last one.
const initial = (arr) => arr.slice(0, -1);
Here's an example:
initial([1, 2, 3]); // [1, 2]
Summary
Congratulations! You have completed the Array Without Last Element lab. You can practice more labs in LabEx to improve your skills.
🚀 Practice Now: Array Without Last Element
Want to Learn More?
- 🌳 Learn the latest JavaScript Skill Trees
- đź“– Read More JavaScript Tutorials
- đź’¬ Join our Discord or tweet us @WeAreLabEx
This content originally appeared on DEV Community and was authored by Labby
Labby | Sciencx (2024-07-13T03:22:54+00:00) Array Without Last Element | Programming Tutorials | Lab. Retrieved from https://www.scien.cx/2024/07/13/array-without-last-element-programming-tutorials-lab/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.