Storing any arbitrary value in a qooxdoo object.

You can store arbitrary user-defined data in any qooxdoo object using the setUserData and getUserData functions. These are guaranteed not to conflict with qooxdoo or javascript properties of the object. Note that as qooxdoo events are derived from QxEvent which extends QxObject, you can store user-defined data in events as well.

For example:

MyObject.setUserData("MyData", "123");
MyObject.debug("MyData = " + MyObject.getUserData("MyData"));