# Adding methods to built-in classes

**URL:** <https://forum.kirupa.com/t/adding-methods-to-built-in-classes/58302>\
**Category:** Uncategorized\
**Created:** [July 21, 2004, 12:30pm UTC](https://forum.kirupa.com/t/adding-methods-to-built-in-classes/58302 "2004-07-21T12:30:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gpleone](https://avatars.discourse-cdn.com/v4/letter/g/b4bc9f/32.png) [@gpleone](https://forum.kirupa.com/u/gpleone)\
**Post date:** [July 21, 2004, 12:30pm UTC](https://forum.kirupa.com/t/adding-methods-to-built-in-classes/58302/1 "2004-07-21T12:30:49Z")

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hy, i’m new in this forum and in as2, this is my question.  
i would like to add methods/properties i built to built-it classes, i know i can do it in as1 using Class.prototype.mymethod … but how can i do it in as2?

thanks everybody