Java Reference
In-Depth Information
String Manipulation
What You Will learn in this Chapter:
➤
Using the String object's advanced methods to manipulate strings
➤
Matching substrings follow a specific pattern
➤
Validating useful pieces of information, such as telephone numbers,
e‐mail addresses, and postal codes
Wrox.Com Code doWnloads for this Chapter
You can find the wrox.com code downloads for this chapter at
http://www.wiley.com/go/
BeginningJavaScript5E
on the Download Code tab. You can also view all of the examples
In Chapter 5 you looked at the
String
object, which is one of the native objects that
JavaScript makes available to you. You saw a number of its properties and methods, including
the following:
➤
length
—The length of the string in characters
➤
charAt()
and
charCodeAt()
—The methods for returning the character or character
code at a certain position in the string
➤
indexOf()
and
lastIndexOf()
—The methods that allow you to search a string for
the existence of another string and that return the character position of the string if
found
➤
substr()
and
substring()
—The methods that return just a portion of a string
➤
toUpperCase()
and
toLowerCase()
—The methods that return a string converted to
upper‐ or lowercase
