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Chapter 3. Advanced DHTML Techniques > Setting Up and Accessing Arrays

Setting Up and Accessing Arrays

A variable is used to hold a single value in a single signifier (the variable name). The value can be a number, a letter, a word, a sentence, or an entire book, but it can only hold one thing, one piece of datum, at a time. You can create as many variables as you want to hold as much data as you want, but this can get bulky and confusing if you have more than a few values to record.

Arrays are a type of variable that allow you to hold multiple values in a single signifier. This not only allows you to conveniently store your data, it also has some interesting implications in how you can manipulate that data.


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