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Summary

ECMAScript provides JavaScript implementations with complete object-oriented language capabilities.

In this chapter, you have learned about the three different types of objects defined in ECMA-262: native

objects, built-in objects, and host objects.

You explored the

Array

and

Date

objects, learning about their methods, properties, and various quirks.

You also learned about the two built-in objects,

Global

and

Math

, as well as gained understanding

about how the

Global

object is different from others.

This chapter also introduced the capability to define your own objects from the ground up. Several dif-

ferent methods of accomplishing this were explored and their pros and cons discussed.

Finally, you learned how to modify existing objects to include new methods as well as to override exist-

ing methods.

The next chapter finishes up the introduction to the JavaScript Core, ECMAScript, with a discussion of

inheritance.

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Chapter 3

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