# Core ActionScript Classes

- [Working with dates and times](./working-with-dates-and-times/index.md)
- [Working with strings](./working-with-strings/index.md)
- [Working with arrays](./working-with-arrays/index.md)
- [Handling errors](./handling-errors/index.md)
- [Using regular expressions](./using-regular-expressions/index.md)
- [Working with XML](./working-with-xml/index.md)
- [Using native JSON functionality](./using-native-json-functionality.md)
- [Handling events](./handling-events/index.md)
- [Working with application domains](./working-with-application-domains.md)

More Help topics

![](../img/flashplatformLinkIndicator.png)
[flash.events package](https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/events/package-detail.html)

[Document Object Model (DOM) Level 3 Events Specification](http://www.w3.org/TR/DOM-Level-3-Events/)
