March 2015
Beginner
768 pages
18h 32m
English
Content preview from Beginning JavaScript, 5th Edition
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1Introduction to JavaScript and the Web
WHAT YOU WILL LEARN IN THIS CHAPTER:
- Adding JavaScript to your web pages
- Referencing external JavaScript files
- Changing the background color of a web page
WROX.COM CODE DOWNLOADS FOR THIS CHAPTER
You can find the wrox.com code downloads for this chapter at http://www.wiley.com/go/BeginningJavaScript5E on the Download Code tab. You can also view all of the examples and related files at http://beginningjs.com.
In this introductory chapter, you look at what JavaScript is, what it can do for you, and what you need in order to use it. With these foundations in place, you will see throughout the rest of the book how JavaScript can help you to create powerful web applications for your website.
The easiest way to learn something is by actually doing it, so throughout the book you create a number of useful example programs using JavaScript. This process starts in this chapter, by the end of which you will have created your first piece of JavaScript code.
INTRODUCTION TO JAVASCRIPT
In this section you take a brief look at what JavaScript is, where it came from, how it works, and what sorts of useful things you can do with it.
What Is JavaScript?
Having bought this book, you are probably already well aware that JavaScript is some sort of computer language, but what is a computer language? Put simply, a computer language is a series of instructions that tell the computer to do something. That something can be one of a wide variety ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.