Java Reference
In-Depth Information
Summary
In this chapter we have learned the following:
• Objects are a collection of key-value pairs placed inside curly braces
{}.
• Objects have properties that can be any JavaScript value. If it is a function then it is
known as a
method.
• An object's properties and methods can be accessed using either dot notation or
square bracket notation.
• Objects are mutable, which means that their properties and methods can be changed
or removed.
• Objects can be used as parameters to functions, which allows arguments to be
entered in any order, or omitted.
• Nested objects can be created by placing objects inside objects.
• JSON is a portable data format that uses JavaScript object literals to exchange in-
formation.
• The
Math
object gives access to a number of mathematical constants.
• The
Math
object can be used to perform mathematical calculations.
• The
Date
object can be used to create date objects.
• Once you've created a
Date
object, you can use the getter methods to access in-
formation about that date.
• Once you've created a
Date
object, setter methods can be used to change informa-
tion about that date.
• The
Regex
object can be used to create regular expressions.
Now we've reached the end of the first part of the topic, which means that you should have
a good grasp of the JavaScript programming language basics. But JavaScript was originally
