[Help] So confused...

if (PowerCard.leftsub === undefined) var PowerCard.leftsub = (PowerCard.usage !== undefined) ? PowerCard.usage : ""; This is just weird... it throws an unexpected identifier error unless I remove var from the line... but I have not defined PowerCard.leftsub anywhere else and it should need it. Why is it doing this?

Try if (PowerCard.leftsub === undefined) { var PowerCard.leftsub = (PowerCard.usage !== undefined) ? PowerCard.usage : ""; }

I did and it still threw the error. It works even without using var... so I'm not too concerned. I just want to know what this quirk of javascript is...

Properties can be created on the fly. Same for other variables, if you don't declare a variable in JavaScript, but implicitly use it, it is created at a global scope. I don't believe you can declare properties of a class with that Syntax which is why it is throwing an error.

George B. said: Properties can be created on the fly. Same for other variables, if you don't declare a variable in JavaScript, but implicitly use it, it is created at a global scope. I don't believe you can declare properties of a class with that Syntax which is why it is throwing an error. No, you can... I do it all the time. As soon as I remove var from the line, it works.

Sorry, my point was that having the word var there is incorrect syntax for adding a new property to an object in Javascript. the 'var' would only be acceptable when declaring a variables within the objects definition. And to clarify, using the 'var' within the objects definition would create a variable with the scope of the object, but not actually a property of the object. So, that may or may not actually be what you want.

PowerCard.leftsub isn't a variable, it's a property. PowerCard is a variable. PowerCard was declared with var; leftsub is not.

Aha... that error makes sense now.