ActionScript 3 now supports regular expressions! The implementation is much like the one used in JavaScript. You can create new regexp patterns with the RegExp class constructor (top level) and a string or using the literal text format (defined like a string only replacing quotes with a forward slash (/). Ex:

ActionScript Code:

var reCon:RegExp = new RegExp("\\w+", "i");
var reLit:RegExp = /\w+/i;

RegExp methods include:

• RegExp.exec()
• RegExp.test()

String methods that work with regular expressions include:

• String.match()
• String.replace()
• String.search()