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Regular Expressions is one of the great things that Adobe has done in Actionscript 3. It simplifies the way that you do the validation of email, birthdate, cep…

Almost all programming languages have Regular Expressions, the only thing that modify, is the usage.

Here are some examples:

Email

var regExp:RegExp = /^[a-z][w.-]+@w[w.-]+.[w.-]*[a-z][a-z]$/i;
var isValid:Boolean = regExp.test(”hahahaag@gmail.com”);
trace(isValid); // true

Birthdate

This is one of the longest Regular Expression that I’ve used. It validates the birthdate perfect, including leap year.

var regExp:RegExp = /^(((0[1-9]|[12][0-9]|3[01])([/])(0[13578]|10|12)([/])([1-2][0,9][0-9][0-9]))|(([0][1-9]|[12][0-9]|30)([/])(0[469]|11)([/])([1-2][0,9][0-9][0-9]))|((0[1-9]|1[0-9]|2[0-8])([/])(02)([/])([1-2][0,9][0-9][0-9]))|((29)(.|-|-)(02)([/])([02468][048]00))|((29)([/])(02)([/])([13579][26]00))|((29)([/])(02)([/])([0-9][0-9][0][48]))|((29)([/])(02)([/])([0-9][0-9][2468][048]))|((29)([/])(02)([/])([0-9][0-9][13579][26])))$/i;
var isValid:Boolean = regExp.test(”16/06/1986″);
trace(isValid); // true

You can find many others, searching at Google. The usage is the same.

If somebody finds others interesting RegExp, please send it to me.

Good luck!

This entry was posted on Friday, January 30th, 2009 at 8:40 pm and is filed under Actionscript, Flash, General. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.