Using a variable value

Hi there!
Please, first, promise not to laugh!
In the script, I wrote:
text_field.text = "yes";
var a:String = text_field.text;
At the beginning of a conditional logic statement I want to
use the value of this variable.
How should I write the condition?
I tried:
if (a == yes) {....
if (a = yes) {....
if (a == "yes") {....
if (a.length = 3) {....
Nothing works...
Maybe I'm too tired and... confused!
Please, put me back on the track.
I thank you in advance.
Best regards from Old Gerry

GerryIsHere,
> In the script, I wrote:
> text_field.text = "yes";
> var a:String = text_field.text;
I'm with you so far.
> At the beginning of a conditional logic statement I want
> to use the value of this variable.
> How should I write the condition?
The a variable is typed as a string, so its value must be a
string.
> I tried:
> if (a == yes) {....
Because "yes" does not appear in quotes, Flash will
interpret it as a
variable. Since you haven't declared a yes variable anywhere,
it's value
will be undefined or null, so your first condition compares a
with, say,
undefined, which evaluates to false.
> if (a = yes) {....
This isn't a comparison at all, actually. The single equals
sign is an
active operator that *sets* the value of one thing to
another. Here, you're
setting the value of a to, again, undefined (or perhaps
null).
> if (a == "yes") {....
This should do it. When you say nothing works, how are you
determining
that?
> if (a.length = 3) {....
Again, the single equals sign is killing it. You're trying
to set the
String.length property to a number, but the length property
is read-only.
Is it possible that text_field isn't a correct reference to
one of your
text fields? One of your text fields would have to have the
instance name
"text_field" (minus quotes) in order to be referenceable by
ActionScript.
David Stiller
Co-author, Foundation Flash CS3 for Designers
http://tinyurl.com/2k29mj
"Luck is the residue of good design."

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Edited by: 784414 on Dec 2, 2010 4:15 AM
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best regards..

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