CHAPTER 8Regular Expressions
Manipulation of textual data is a common task in JavaScript. Checking data entered into forms, creating and parsing cookies, constructing and modifying URLs, and changing the content of Web pages can all involve complicated operations on strings. Text matching and manipulation in JavaScript is provided by the String object, as discussed in Chapter 7, and regular expressions, a feature enabling you to specify patterns of characters and sets of strings without listing them explicitly.
Regular expressions, sometimes referred to as regexps or regexes for brevity, have also long been a part of many operating systems. If you have ever used the dir command in Windows or DOS or the ls command in UNIX, chances are you’ve used ...
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