July 2008
Beginner
356 pages
6h 8m
English
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Built-in Objects
Earlier in this chapter we came across the Object() constructor function. It is returned when you create objects with the object literal notation and access their constructor property. Object() is one of the built-in constructors; there are others and in the rest of this chapter you'll see all of them.
The built-in objects can be divided into three groups:
- Data wrapper objects—
Object,Array,Function,Boolean,Number, andString. These objects correspond to the different data types in JavaScript. Basically, there is a data wrapper object for each different value returned bytypeof(discussed in Chapter 2) with the exception of "undefined" and "null". - Utility objects—These are
Math,Date,RegExpand can come in very handy. - Error ...
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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.