JavaScript Absolute Beginner's Guide, 2nd Edition

2. Values and Variables

In This Chapter

• • Learn how to use values to store data

• • Organize your code with variables

• • Get a brief look at variable naming conventions

In JavaScript, every piece of data that we provide or use is considered to contain a value. In the example we saw from our introduction, the words hello, world! might just be some words that we pass in to the alert function:

alert("hello, world!");

To JavaScript, these words have a specific representation under the covers. They are considered values. We may not have thought much about that when we were typing those words in, but when we are in JavaScript-country, every piece of data you touch is considered a value.

Now, why is knowing this important? It is important because ...