does a variable exist?

Question

So... I've got an object, and I want to know if there is a
variable inside the object named "thing"

like so:
objectInstance.thing

Is there a way I can test to see if "thing" exists?
(regardless of thing's data type or content)

thanks

Newsgroup_User · Answer

objectInstance.thing == undefined ? trace ("objectInstance.thing is
undefined") : trace ("objectInstance.thing = "+objectInstance.thing);

Look out for line wrapping - the above is all one line. It's a shorthand way
of expressing:

if (objectInstance.thing == undefined){
trace ("objectInstance.thing is undefined);
} else{
trace ("objectInstance.thing = "+objectInstance.thing);
}

--
-------------------------------
Remove '_spamkiller_' to mail
-------------------------------

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded