actionscript (flex): how to know whether a property of object exists (or defined)?

Question

I am a Java developer who tries Flex. Here is my problem:

I behave actionScript objects as hashmap but when the object do not have the property it gives exception: No su

Answer 1

Use something along the lines of

if (myObject.hasOwnProperty("propertyName"))

to check if the property exists.

Edit: Also take a look here.