declaring variables.

[kO2n]

Whats the difference with declaring variables in the following manner:

i = 0;
and
var i = 0;

Regards,
Viru.

[andr.in]

There isn't.. at least that's what I think! I never use var!

[λ]

well... it does have one difference. If you use it in a function:


function addOne(){
var i;
i+=1;
return i;
}

//Once the function finishes, i is destroyed. This is what the var keyword does in a function.
function addOne2(){
i+=1;
return i;
}
//because we omitted var, i is not destroyed:
for(var j = 0;j < 3;j++){
trace(addOne2());
}
//outputs 123.
for(var j = 0;j < 3;j++){
trace(addOne());
}
//outputs 111, as i is always destroyed


Other than that, it's just good form and helps when you move on to C or Java.

[kO2n]

Yeah i do Java too.

It says in the actionscript dictionary that it makes the variable local when var is used. Makes sense, i just wondered thats all.

Thanks,
Viru.

[senocular]

local to function calls. Theres no difference in using var or not on the timeline.

[[m]]

There is, but a very slight one. With var you have to wait a frame before you can access it from another place (like another mc), if you don't use var you can access it straight away.

[pom]

There's something in the AS tricks about that and [m], are you sure about what you're saying? It sounds strange :-\ How would you access that local variable from another movieclip?? Can you give an example?