macromedia Dreamweaver 8

Appendix A. Regular Expressions

Regular expressions describe patterns that you can use to search code and text. Searching with regular expressions is covered in Lesson 17. The following table lists the special characters that are used in regular expressions, descriptions of their meanings, and examples of their matches.

Type	Description	Example
^	Beginning of input or line	^T matches “T” in “This good earth,” but not in “Uncle Tom”
$	End of input or line	h$ matches “h” in “teach,” but not in “teacher”
*	The preceding character zero or more times	um* matches “um” in “rum,” “umm” in “yummy,” and “u” in “huge”
+	The preceding character one or more times	um+ matches “um” in “rum” and “umm” in “yummy,” but nothing in “huge”
?	The preceding character zero or one time ...