Extracting Strings

String validation isn’t the only useful thing you can do with regular expressions. String extraction is also useful; being able to take just part of a string and manipulate it allows you to have more control over the final result. In Script 8.4, we’ll take a list of names entered in first-name-first order and swap them so that they’re in last-name-first order.

To extract strings:

var re = /\s*\n\s*/;
Here’s a new regular expression, which simply searches for a pattern that consists of any white space \s*, followed by a new line character \n, followed again by any white space \s*.
var nameList = inNameList.split(re);
The string method split() takes the regular expression and applies it to the data entered by the user ...

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