Parsing Query string in js to pass to swf

**jblastos** · 08-25-2009, 01:23 AM

I'm trying to pass a variable into an swf using query strings. Am loading the swf through swfobject.js in my aspx page.

Code:

<div id="flashcontent">Replacement copy</div>


<script type="text/javascript">
var myVar = new SWFObject("mymovie.swf", "name", "740", "540", "8", "#ffffff");
so.addVariable("varInFlash", "<%=Request.QueryString["variableName"]%>");
myVar.write("flashcontent");
</script>

with a

Code:

_root.varInFlash;

in the first frame of my movie.

Only problem is, that with the so.addVariable statement in there, the swf doesn't load. I comment out that line, and it loads just fine.

So I have syntax off somehow? I think for asp that the brackets [ ] are needed, but not sure.

Or is my javascript syntax off??

Anyone here have some input?

THANKS!

**MyFriendIsATaco** · 08-25-2009, 11:04 AM

What version of SWFObject are you using?

**jblastos** · 08-25-2009, 02:28 PM

had gone to googlecode to get latest, but let me double check...

**MyFriendIsATaco** · 08-25-2009, 03:24 PM

If you're using the latest, 2.x series, you're using the completely wrong syntax. Syntax has changed from 1.5 to 2.0. Revise your code, and then we'll take a better look at it.

**jblastos** · 08-25-2009, 03:51 PM

Ah! Had 1.5 but then that wasn't working, so grabbed a temp copy of 2.2.

That would explain a lot!

**jblastos** · 08-26-2009, 12:25 AM

Okay, got it working with 2.2 and

Code:

<param name="flashvars" value=<%=Request.QueryString%> />

simple.

Don't know why original request was failing with 1.5, but guess it doesn't matter as have moved on to 2.2.

Thanks for help!!

**MyFriendIsATaco** · 08-26-2009, 12:40 AM

Wait, why are you using a <param> tag with 2.2? Your code should be similar to:

swfobject.embedSWF(....);

**jblastos** · 08-26-2009, 01:17 AM

Ha!
You are absolutely right, and that is how I started writing it.

Then I noticed the "SWFObject 2 HTML and JavaScript generator v1.2" and tried to figure out why that was being distributed if it produced different code.

So I ran with it.

I got it to work (which is more than I can say with what I thought was supposed to work with 1.5), so now I'm backing out to the swfobject.embedSWF(....); code.

**jblastos** · 08-26-2009, 02:18 AM

So basically,

Code:

	<script type="text/javascript" src="swfobject.js"></script>
	<script type="text/javascript">
	swfobject.embedSWF("movie.swf", "swfWin", "400", "300", "8.0.0", flashvars, params, attributes);
	</script>
	</head>
	<body>
		<div id="swfWin">
                         SWF goes here 
		</div>
	</body>

is the proper way to do it, and I just have to pass the query to flashvar.

**MyFriendIsATaco** · 08-26-2009, 10:29 AM

flashvars, params, and attributes are objects that you need to define.

To short hand it, you can just use {} to fill the gap if there's nothing needed.

In your case, you could do this:

Code:

	<script type="text/javascript" src="swfobject.js"></script>
	<script type="text/javascript">
	swfobject.embedSWF("movie.swf", "swfWin", "400", "300", "8.0.0", "expressInstall.swf", {varInFlash: "<%=Request.QueryString["variableName"]%>"}, {}, {});
	</script>
	</head>
	<body>
		<div id="swfWin">
                         SWF goes here 
		</div>
	</body>

**MyFriendIsATaco** · 08-26-2009, 10:33 AM

Ha, and I just now looked at your original attempt again. I see what was wrong. You had your variable names mixed up. You started out defining a myVar, then when you call the addVariable, you used so. If you changed it to

Code:

myVar.addVariable("varInFlash", "<%=Request.QueryString["variableName"]%>");

it should work.

**prj** · 08-26-2009, 11:23 AM

I have tried n no of ways to access flash vars in as3.
Anyone here have some input?

THANKS!
That would explain a lot!

**jblastos** · 08-26-2009, 03:15 PM

Originally Posted by MyFriendIsATaco

Ha, and I just now looked at your original attempt again. I see what was wrong. You had your variable names mixed up.

Duh! I was so focused on "maybe I have a delimter wrong" or thinking that the syntax wasn't right, that I didn't even notice that.

But then again no one noticed that until you just did...

But with that correction, it is producing an "identifier expected" error within the request.

Code:

                         __w.Write(Request.QueryString["variableName"])
                                                       ~

I thought the Request.QueryString was properly formed?

**MyFriendIsATaco** · 08-26-2009, 05:30 PM

I know nothing about ASP or .NET. I'm purely a PHP/Python guy. Anti-Microsoft.

@prj To access FlashVars in AS3, do:

Code:

root.loaderInfo.parameters.myFlashVar

**MyFriendIsATaco** · 08-26-2009, 05:31 PM

Hmm, accord to this page: http://www.w3schools.com/ASP/coll_querystring.asp

You syntax should be: Request.QueryString("variableName")

Parenthesis vs square brackets.

**jblastos** · 08-26-2009, 06:25 PM

Originally Posted by MyFriendIsATaco

Hmm, accord to this page: http://www.w3schools.com/ASP/coll_querystring.asp

You syntax should be: Request.QueryString("variableName")

Parenthesis vs square brackets.

Yeah, not an asp guy myself. Just helping out on this. Good learning situation.

And I read somewhere that the square brackets have to be used on asp. What I was doing wasn't working, so I changed them to square brackets and stopped getting an error. Of course, now that I'm getting into it, I'm finding a lot of things I read about in researching this have just been plain wrong.

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