Shoutbox

Global variables are globaly defined, which means you don't have to redefine them again, in no function.
Once defined they are accessable everywhere in all the code.

Local variables, have to be redefined in every function and will be deleted from the memory once the function has ended.

This example will explain:

code:

---

var GlobalVariable;

function Blah(ParsedVariable1)
{
  var LocalVariable = "value";
  GlobalVariable = "value too";
  Blah2(ParsedVariable1);
}

function Blah2(ParsedVariable2)
{
  //GlobalVariable is still "value too",
  //LocalVariable isn't accessible (but exists in the memory, since Blah isn't yet ended, which will end as soo as Blah2 end, because i called Blah2 inside Blah, as Blah will then wait for Blah2 to end)
  //ParsedVariable2 is the same as ParsedVariable1
  //ParsedVariable isn't accessible (see LocalVariable)
}

---

Hope this helps

Yeah, but there is still something that I do not understand.
Do I have to make it explicit that they are global variables? I mean, in Matlab i define, global MyVar...
But, here it seems that it's just defining it outside every function. Is it like that or something else? Because, in that case, I got a problem because my script wasn't taking global variables correctly..I had to redefine them in every function to make it work, even though I defined them outside...so I don't find the problem...

Global variables have to be defined before anything else, like shown in my example, you can't define global variables any other way AFAIK.

Well, let me show you what my problem was, may be you figure it out.

I had....
var sEmails = new

Array("mail1@hotmail.com","mail2@hotmail.com","mail3@hotmail.com");

var ContactoUno = Messenger.MyContacts.GetContact(sEmails[0]);
var ContactoDos = Messenger.MyContacts.GetContact(sEmails[1]);
var ContactoTres = Messenger.MyContacts.GetContact(sEmails[2]);

before any function, when I realised I needed global variables in order to be accessed by any function, but the fact was that I had to redefine ContactoUno, ContactoDos, ContactoTres y every function I wanted to use it because I'd get an error if I didn't...
So, they are global but need to be defined in every function? in that case the script worked indeed... or what else could be wrong?

quote:

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Originally posted by Plan-1130
Global variables have to be defined before anything else, like shown in my example, you can't define global variables any other way AFAIK.

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Global variables can be defined anywhere in the code as long as they are outside any function and before the code where you use them. Though usually not good practice, the next code is perfectly valid:

[code]function Hello() {
    Debug.Trace(myglobalvariable);
}

var myglobalvariable = 'Hello';

function World() {
    Debug.Trace('World');
}

Hello();
World();

---

quote:

---

Originally posted by Poki
Well, let me show you what my problem was, may be you figure it out.

I had....
var sEmails = new Array("mail1@hotmail.com","mail2@hotmail.com","mail3@hotmail.com");

var ContactoUno = Messenger.MyContacts.GetContact(sEmails[0]);
var ContactoDos = Messenger.MyContacts.GetContact(sEmails[1]);
var ContactoTres = Messenger.MyContacts.GetContact(sEmails[2]);

before any function, when I realised I needed global variables in order to be accessed by any function, but the fact was that I had to redefine ContactoUno, ContactoDos, ContactoTres y every function I wanted to use it because I'd get an error if I didn't...
So, they are global but need to be defined in every function? in that case the script worked indeed... or what else could be wrong?

---

All the variables you defined there are global already.

Your problem is that you don't have valid values defined to them when the script starts.

Scripts are started before objects like Messenger are fully available. Thus when the script engine comes to ContactoUno it tries to parse/execute those methods from the Messenger object but they aren't available yet, hence the error.

That's exactly why you need to use events like OnEvent_Initialize(bMessengerStart), or in the above case even better OnEvent_SigninReady(sEmail).



Study the Official Plus! Live Scripting Documentation and the JScript 5.6 Documentation.

Well, thanks, that was really useful.
So, let me see if I undestood, I had to define the global variables just as I did, but...
don't give them any value before objects like Messenger are fully loaded, so the assignment of the variable had to be done maybe in OnEvent_SignInReady(email), because there I can be sure that Messenger object is ready and there would be no problem in assigning the correct value....
(just verbalizing for myself...)
Again, thanks to every one who helped me in this attempt to make a script...I'll be posting it soon.
Seeya.

quote:

---

Originally posted by Poki
Well, thanks, that was really useful.
So, let me see if I undestood, I had to define the global variables just as I did, but...
don't give them any value before objects like Messenger are fully loaded, so the assignment of the variable had to be done maybe in OnEvent_SignInReady(email), because there I can be sure that Messenger object is ready and there would be no problem in assigning the correct value....

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Absolutely correct

Well, finally....
It's done.
May I ask you....how do I export my script so is it downloadable and ready to go?
I only have my .js script, but have several friends who won't know how to make it run unless I do something like that.

quote:

---

Originally posted by Poki
Well, finally....
It's done.
May I ask you....how do I export my script so is it downloadable and ready to go?
I only have my .js script, but have several friends who won't know how to make it run unless I do something like that.

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Seek the Messenger Plus! Live Scripting documentation for Packing your Script. To submit your script to the Scripts Database read Submit Instructions.

You can get a script packager of MPScripts Tools website, this basicly does all the work for you