Question

I have an array that might be present in my .aspx page, if it is, I want to fire a javascript function.

I tried:

if(someArray)        blah(someArray); 

but I get an error when I havent’ defined someArray.

Answer 1

You should probably be pre-defining the array as null and check to see if it resolves, rather than sometimes available.

Array someArray = null;  // this is where you'll populate or replace someArray // if you don't, someArray simply remains empty  if (someArray) {     ... }