JavaScript Projects for Kids: Gear up for a roller-coaster ride into the world of JavaScript and programming with this easy-to-follow, fun, and entertaining project-based guide

Omar Faruk Towaha

R$155.99

3.5 (2 Ratings)

Paperback Jan 2016 188 pages 1st Edition

Omar Faruk Towaha

R$155.99

3.5 (2 Ratings)

Paperback Jan 2016 188 pages 1st Edition

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JavaScript Projects for Kids

Chapter 2. Solving Problems Using JavaScript

You have learned how to print something using JavaScript on console in the previous chapter. Now, let's see the fundamentals behind JavaScript syntax, variables, arithmetic operators, and comments.

In the computer world, there is nothing but data. You can read, modify, and create new data; however, anything that isn't data simply does not exist. In JavaScript, we need to handle data to develop a website.

To understand the basic syntax of JavaScript, first of all you need to know that JavaScript is case sensitive. You cannot interchange lower case and upper case letters in JavaScript. Therefore, when dealing with the JavaScript syntax, you need to remember that writing the code is not the only important task, you must also watch the syntax whether it's written correctly.

Let me show you an example. In the previous chapter, you have successfully printed Hello World on your browser using the document.write(); syntax.

What would...

Arithmetic operators

In JavaScript, like other programming languages, we can do some arithmetic operations. In your school, you might have already learned how to add two numbers, subtract one number from another number, multiply two numbers, and divide a number with another. You can do all these things in JavaScript with the help of a few lines of code.

In JavaScript, we use the following arithmetic symbols for the operations:

Operator	Description
+	To add
-	To subtract
*	To multiply
/	To divide
%	To find the reminder (called modulus operator)

Addition

Suppose you have two variables, x and y, with the values 3 and 4, respectively. What should we do on the console to store the values on the variables?

Yes, we do the following:

var x = 3; // 3 is stored on variable x
var y = 4; // 4 is stored on variable y

Then, press Enter.

Take another variable that will hold the summation of x and y, as follows:

var z = x+y; // This syntax stores the sum of x and y on z

Can you tell me what will happen...

Key benefits

Get to know the concepts of HTML and CSS to work with JavaScript
Explore the concepts of object-oriented programming
Follow this step-by-step guide on the fundamentals of JavaScript programming

Description

JavaScript is the most widely-used programming language for web development and that's not all! It has evolved over the years and is now being implemented in an array of environments from websites to robotics. Learning JavaScript will help you see the broader picture of web development. This book will take your imagination to new heights by teaching you how to work with JavaScript from scratch. It will introduce you to HTML and CSS to enhance the appearance of your applications. You’ll then use your skills to build on a cool Battleship game! From there, the book will introduce you to jQuery and show you how you can manipulate the DOM. You’ll get to play with some cool stuff using Canvas and will learn how to make use of Canvas to build a game on the lines of Pacman, only a whole lot cooler! Finally, it will show you a few tricks with OOP to make your code clean and will end with a few road maps on areas you can explore further.

Who is this book for?

If you've never written code before or you are completely new to the world of web programming, then this book is the right choice for you. This book is for kids of age 10 years and above and parents who are completely new to the world of programming and want to get introduced to programming.

What you will learn

Learn how to work with Google Developer tools to iterate, debug and profile your code
Develop a Battleship game using the basic concepts of HTML and CSS
Get to know the fundamentals of JavaScript programming
Create our own version of Pac Man game.
Discover the vital concepts of object-oriented programming

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Raspberry Pi Projects for Kids (Second Edition)

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Total R$ 524.97

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Towaha Apr 07, 2018

Easy for not only kids but for new learners. Recommended.

Amazon Verified review

G. A. Patino Jul 11, 2016

A common complaint about many textbooks is that they start explaining everything very simply, but after a few chapters the level of complexity suddenly ramps up and the book leaves many readers behind. This book is a perfect example of that. I got it because, despite knowing some other programming languages, I wanted to learn JavaScript. The initial 4 chapters were great and provided a good introduction to the language, along with the key concepts of HTML and CSS. However, in chapter 5 the author basically posted the code for a version of the game Battleship stating what each portion of the code would do but not explaining how the commands listed achieved so. It might be possible for somebody with prior programming experience to intuit what the new commands and functions presented do, but if this is a book for kids I wonder how easy it is for them to achieve this if it is their first foray into programming. I was also looking for a good teaching text, not a demonstration of the things you can do with the language. Chapter 6 and 7 again do a decent job of introducing JQuery and the HTML Canvas, but chapters 8 and 9 are again just code listings (although chapter 9 offers a basic description of object-oriented programming concepts) for two other games without any explanations of the new functions or the Angular framework that are used. The first chapters of the book demonstrate the author's ability to explain concepts clearly and in a friendly manner, I hope that in the next edition of the book he keeps that spirit in all of the book's chapters.

JavaScript Projects for Kids: Gear up for a roller-coaster ride into the world of JavaScript and programming with this easy-to-follow, fun, and entertaining project-based guide

What do you get with Print?

JavaScript Projects for Kids

Chapter 2. Solving Problems Using JavaScript

Variables

Note

Comments

Arithmetic operators

Addition

More operators and operations

Increment or decrement operators

Summary

Page 1 of 6

Key benefits

Description

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What you will learn

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JavaScript Projects for Kids: Gear up for a roller-coaster ride into the world of JavaScript and programming with this easy-to-follow, fun, and entertaining project-based guide

What do you get with Print?

Key benefits

Description

Who is this book for?

What you will learn

Product Details

What do you get with Print?

Product Details

Packt Subscriptions

Frequently bought together

Table of Contents

Recommendations for you

Customer reviews

People who bought this also bought

About the author

FAQs