Summary

A lot has been covered in this chapter. You should now have a deeper understanding of the types provided by JavaScript, but also the subtle ways in which each type is related. Understanding how data is represented in a language provides a solid foundation for building applications more quickly and with fewer bugs.

As well as understanding the data types, you also saw how to manipulate them, both with methods and with helper functions provided by the JavaScript engine. You also saw how to convert data into different types, in order to enable data interoperability.

Finally, you saw how you can debug your data using the console and using string-based data formatting capabilities provided by the language.

In the next chapter, you will start down the path of user interactivity and see how events can be triggered to force your code to do something. You will also be introduced to the relationship between the JavaScript language and the HTML DOM in the browser environment...