Flash Vista - Principal
Sitio de Destello de la Semana
The Two Tales
InformaciСn del site | Archivo
NavegaciСn Principal
Principal
Enlaces Nuevos
Lo más Popular
Lo Más Popular
Recomendaciones del Editor
Buscar

Flash Tutorials
Flash Resources
Noticias
Flash Templates
Flash Intro Templates
Website Templates
Flash Games
Flash Books
Encuestas
Mapa


EslabСn Arbitrario
English
SissyFight
InformaciСn del site | Consiga otro
FlashVista
Conectar
Registrar
Subscribir

Añadir enlace
Modificar Enlace
Favoritos
Sugerir Categoría

Hacer publicidad
ApСyenos
CrИditos & Agradece
Contacto

Flash Templates:

More Templates ...

Lista de correo
Usuario

Clave



Registrar
©Ha olvidado usted su contraseЯa?
Partner websites
Free Hit Counter
Free Seo Tools
Free Tutorials
Free Video Tutorials
Forum signatures
Best Free Scripts
Wii Fit
Wii Fit News
Cool Tech Gadgets
Other Resources
Sugerir
Sugerir a un amigo


Lista de correo
Estado: No estás conectado/identificado

Español English German French Spanish Italian Portuguese Russian Polish Finnish Dutch Swedish Thai Romanian Traditional Chinese Simplified Chinese
BuscarNo estás conectado/identificado
Clave: Buscar: Búsqueda Avanzada


Variable variables in Flash actionscript


NEW Flash Tutorials in Video Format - Powered by LearnFlash.com: 45 minutes of flash tutorials now available in streaming format or download. Topics Include flash for beginners, text effects, actionscripting, audio/video, flash 8 and more.


Printer version



by Mirza Hatipovic

I often make use of variable variables, because I generally use interpreted languages like PHP. Variable variables are not supported in compiled languages like C++ etc. The same applies for Actionscript. Because I make extensive use of variable variables in PHP, I had some difficulties solving specific problems in Actionscript. Fortunately I found a trick to solve my problem. But before I show you the sample script I will give a short introduction to variable variables in PHP.

Sample PHP script:

//my_var has a string value of “mirza”
$my_var = “mirza”;
//allocate a variable variable of the variable $my_var
$$my_var = 1;
//the upper line of code now has the same meaning like $mirza = 1; !!!


In words, with variable variables you can dynamicaly create variable names and give them values!!!

Now on to Actionscript...

With eval() you can achieve similar results in AS.


//my_var has a string value of “mirza”
my_var = “mirza”;
//allocate a variable variable of the variable my_var
mirza = 1;
//has a value of 1
trace(eval(my_var));

Well, I know that this looks very strange. But I use this method in loops to dynamically create variables like pic1, pic2, pic3.

for(i = 1; i<=5; i++){
//current variable
curr_var = eval(pic + '' + i);
//handle variable…pic1, pic1, etc
}


Hope you’ll find it usefull.


(Añadida: 11-04-2003, Visitas: 0, Evaluación: 2.78, Votos: 32, Comentarios: 4)
AЯada a Favoritos Sugiera a un Amigo

Comentarios: (4)

Good Tutorial
(Añadida: 12-20-2005 Usuario: Invitado)

But it is very usefull if you want to insert arrays into flash with javascript which you can't do directly. But if you set each var like: array[1] => array1 then you can use this function to get your original array back.
(Añadida: 02-19-2005 Usuario: Invitado)


for(i = 1; i<=5; i++){
//current variable
curr_var = eval(pic + '' + i); _root.addProperty("pic" + i, get, set);
//handle variable…pic1, pic1, etc
setProperty("_root.pic" + i, value, "Value: " + i);
}

//===>

for (i = 1; i<= 5; i++) {
trace(eval("_roo.pic" + i));
}

(Añadida: 02-04-2005 Usuario: Invitado)

Much as this tutorial offers useful advice, it is very bad programming practise to do what is done above.

Use arrays instead. Eval was put in actionscript before arrays were put in. Between arrays and ["property"] eval is practially useless. It is only needed in advanced techniques.

(Añadida: 05-25-2004 Usuario: Invitado)


Añadir Comentario
Please note:
We review EVERY comment before it appears on the site, so please dont waste your time by posting spam links :)
No URLs allowed, no HTML please.

If you register or login first, your review will contain your nickname


Evaluarlo



¡Genial!
Muy bueno
Bueno
Aprobado
Malo