Mastering JavaScript Fundamentals Through Coding

Introduction

In this lab, we will explore JavaScript programming concepts and practice implementing them through coding exercises. The lab aims to help beginners gain a deeper understanding of JavaScript syntax, data types, control flow, and functions. By the end of the lab, you will have honed your coding skills and be ready to tackle more complex JavaScript projects.

Skills Graph

How to Get Array Tail in JavaScript

To get all the elements in an array except for the first one, you can use the Array.prototype.slice() method. If the array length is more than 1, use slice(1) to return the array without the first element. Otherwise, return the whole array.

Here's an example code:

const tail = (arr) => (arr.length > 1 ? arr.slice(1) : arr);

You can now use the tail() function to get the array tail:

tail([1, 2, 3]); // [2, 3]
tail([1]); // [1]

Summary

Congratulations! You have completed the Array Tail lab. You can practice more labs in LabEx to improve your skills.