Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.Challenge: Array Operations | Variables and Data Types
Introduction to JavaScript

Challenge: Array OperationsChallenge: Array Operations

Task

  1. Create an array named myArray with the given data: ["Heine", 25, "Bob", 16].
  2. Remove the last element, 16, from the array.
  3. Add a new element with the value 21 to the end of the array.
  4. Replace the second element with the value 27 using indexing.
  5. Print the updated array to the console.

The output should be :

  1. Use the pop() method to remove an element from the end of an array.
  2. Use the push() method to add an element to the end of an array.
  3. Access the second element in the array using the index 1.
  4. To log the array data to the console, use the console.log() with the array name.

Everything was clear?

Section 2. Chapter 8
course content

Course Content

Introduction to JavaScript

1. Basic Concepts

About JavaScriptSyntaxChallenge: Console OutputCommentsChallenge: Single-line CommentChallenge: Multi-line Comment

2. Variables and Data Types

VariablesChallenge: Defining the VariableconstData Types OverviewnullArrayArray MethodsChallenge: Array Operations

3. Basic Operations

AssignmentMathematical OperationsOperations with AssignmentIncrement and DecrementChallenge: Variable OperationsComparison OperationsLogical OperationsChallenge: Comparing VariablesString ConcatenationChallenge: Sentence Building

4. Conditional Statements

ifelseelse ifChallenge: Determining Size

5. Loops

whiledo whileChallenge: Printing Numbers from 5 to 9forChallenge: TigersbreakcontinueChallenge: Stopping and Skipping

6. Functions

What is a Function?DefinitionChallenge: My NameArgumentsreturnChallenge: SumSummary

Introduction to JavaScript

Challenge: Array OperationsChallenge: Array Operations

Task

  1. Create an array named myArray with the given data: ["Heine", 25, "Bob", 16].
  2. Remove the last element, 16, from the array.
  3. Add a new element with the value 21 to the end of the array.
  4. Replace the second element with the value 27 using indexing.
  5. Print the updated array to the console.

The output should be :

  1. Use the pop() method to remove an element from the end of an array.
  2. Use the push() method to add an element to the end of an array.
  3. Access the second element in the array using the index 1.
  4. To log the array data to the console, use the console.log() with the array name.

Everything was clear?

Section 2. Chapter 8
some-alt