Introduction to JavaScript

Course Content

Introduction to JavaScript

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

Course Summary & Next Steps

You have completed all the chapters! This is fantastic! Review what you have learned throughout the course and take a quiz.

Variables and Constants

Variable (let) is named storage of value for the multiple usages;
Constant (const) is an unchangeable variable.

Data Types

number is a numeric data type;
string is a text data type. Writing in quotes (" or ');
boolean is a logical data type (true or false);
array is a collection of values. The most commonly used methods are push(), pop(), unshift() and shift().

Basic operations

Assignment (=);
Math (+, -, *, etc.);
Comparison (>=, <, ==, ===, etc.);
Logical (AND &&, OR (||);
String Concatenation (+ between strings).

Conditional Statements

if (condition) {code block};
else {code block} after if;
else if (condition) {code block} for a few conditions.

Loops

while (condition) {code block};
do (code block) while (condition);
for (let counter; condition; counter++) {code block}.

Functions

function myFunc(arg1, arg2, arg3) {code block};
Call the function: myFunc(value1, value2, value3);
Use the return keyword to return the value from a function.

Note

Congratulations! You've successfully completed the 'Introduction to JavaScript' course, mastering the basics of JS. If you're eager to delve deeper into this fantastic programming language, you're invited to join the 'JavaScript Data Structures' course, where we'll explore more about data in JS.

1. Conditional Statements are used to:

2. Loops are used to:

3. Functions are used to:

Conditional Statements are used to:

Select the correct answer

Ask questions to the interpreter.

Control execution flow.

Perform checks.

Repeat a code block.

Loops are used to:

Select the correct answer

Crash the program.

Create an infinite loop.

Hack everything.

Repeat a code block.

Functions are used to:

Select the correct answer

Perform specific operations with specific data.

Control execution flow.

Enable multiple usages of the code block with different data.

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Section 6. Chapter 7

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