Check for existence of variable in JavaScript

[williajx]

Trying to access a variable that does not exist in SC6.1 results in an error.

For example, doing the following:

print( system.vars.$test );

Results in:

Script 'junk' line 806: ERROR Unknown RAD symbol '$test' at char 1


Is there a way to check for the existence of the variable from within JavaScript before trying to use it?

[Artur]

I have not tested it but try:

print( system.functions.nullsub(system.vars.$test, "empty") );

beware: I have no SM at hand, so I might have mistaken something.

regards
Artur