Course Content

Introduction to JavaScript

1. JavaScript Fundamentals

About JavaScript Understanding JavaScript Syntax Challenge: Console Output in JavaScript Using Comments to Document Code Challenge: Write a Single-Line Comment Challenge: Write a Multi-Line Comment

2. Variables and Data Types in JavaScript

Understanding Variables in JavaScript Challenge: Define the Variable Using const for Constants Exploring JavaScript Data Types Working with null in JavaScript Introduction to Arrays Array Methods and Manipulation Challenge: Perform Array Operations

3. Performing Operations in JavaScript

Understanding Assignment Operators Mathematical Operations in JavaScript Assignment Operators in JavaScript Increment and Decrement Operators Challenge: Variable Operations Practice Comparison Operators in JavaScript Logical Operators Explained Challenge: Compare Variables in JavaScript Concatenating Strings in JavaScript Challenge: Build Sentences with JavaScript

4. Controlling Program Flow with Conditional Statements

Mastering if Statements in JavaScript Using else for Alternative Outcomes Applying else if for Multiple Conditions Challenge: Determine Sizes with Conditionals

5. Looping Through Data in JavaScript

Understanding the while Loop in JavaScript Using the do while Loop for Iteration Challenge: Print Numbers from 5 to 9 Mastering the for Loop in JavaScript Challenge: Console Tigers with Loops Breaking Out of Loops with break Skipping Iterations with continue Challenge: Stop and Skip in Loops

6. Functions in JavaScript

What Are Functions in JavaScript?Defining Functions in JavaScript Challenge: Write a Function – My Name Using Function Arguments Effectively Returning Values from Functions Challenge: Create a Sum Function Course Summary & Next Steps

Challenge: Build Sentences with JavaScript

Task

Let's build a full sentence using string concatenation.

Create the string "I am hungry!" using the + operator.
Add words with spaces (except the first one) using the += operator.


              12345678
            
let sentence = "";

sentence += "___"; // "I"
sentence += "___"; // "I am"
sentence += "___"; // "I am hungry"
sentence += "___"; // "I am hungry!"

console.log(sentence);

The output should be:

python

Add words with spaces (e.g., " am", " hungry").


              12345678
            
let sentence = "";

sentence += "I"; // "I"
sentence += " am"; // "I am"
sentence += " hungry"; // "I am hungry"
sentence += "!"; // "I am hungry!"

console.log(sentence);

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 10

Ask AI

Ask anything or try one of the suggested questions to begin our chat