Book Image

JavaScript Projects for Kids

By : Syed Omar Faruk Towaha
Book Image

JavaScript Projects for Kids

By: Syed Omar Faruk Towaha

Overview of this book

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.
Table of Contents (17 chapters)
JavaScript Projects for Kids
About the Author
About the Reviewer

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:




To add


To subtract


To multiply


To divide


To find the reminder (called modulus operator)


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...