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View Full Version : Defining an ASP varibale in javascript



allanb
03-08-2007, 04:47 AM
Hi,
I am trying to define a variable for use in ASP code within a javascript.

This is what I have but it is not working.

if (minVersion) {
document.write("<%gotflash=1%>");
} else {
document.write("<%gotflash=0%>");
}

Any ideas?

degsy
03-08-2007, 11:36 AM
What is your code supposed to achieve?

Server-side code is processed before client-side script.
If you want to set an ASP variable you will have to submit the page.

SSJ
03-08-2007, 01:06 PM
Post your full code snippet.

allanb
03-08-2007, 10:45 PM
I am trying to detect the presence of the flash plugin with a minimum version of 7. I have used a javascript to detect the version that is installed. Here is my code.. Thanks for the help

JS in HEAD tags... (Some useless bits of code in here that I haven't taken out yet so it's a bit long at the moment)

<script language="JavaScript" type="text/javascript">

// Flash Player Version Detection - Rev 1.5
// Detect Client Browser type
// Copyright(c) 2005-2006 Adobe Macromedia Software, LLC. All rights reserved.
var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;

function ControlVersion()
{
var version;
var axo;
var e;

// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

try {
// version will be set for 7.X or greater players
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
version = axo.GetVariable("$version");
} catch (e) {
}

if (!version)
{
try {
// version will be set for 6.X players only
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");

// installed player is some revision of 6.0
// GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
// so we have to be careful.

// default to the first public version
version = "WIN 6,0,21,0";

// throws if AllowScripAccess does not exist (introduced in 6.0r47)
axo.AllowScriptAccess = "always";

// safe to call for 6.0r47 or greater
version = axo.GetVariable("$version");

} catch (e) {
}
}

if (!version)
{
try {
// version will be set for 4.X or 5.X player
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
version = axo.GetVariable("$version");
} catch (e) {
}
}

if (!version)
{
try {
// version will be set for 3.X player
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
version = "WIN 3,0,18,0";
} catch (e) {
}
}

if (!version)
{
try {
// version will be set for 2.X player
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
version = "WIN 2,0,0,11";
} catch (e) {
version = -1;
}
}

return version;
}

// JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
// NS/Opera version >= 3 check for Flash plugin in plugin array
var flashVer = -1;

if (navigator.plugins != null && navigator.plugins.length > 0) {
if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
var descArray = flashDescription.split(" ");
var tempArrayMajor = descArray[2].split(".");
var versionMajor = tempArrayMajor[0];
var versionMinor = tempArrayMajor[1];
if ( descArray[3] != "" ) {
tempArrayMinor = descArray[3].split("r");
} else {
tempArrayMinor = descArray[4].split("r");
}
var versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
}
}
// MSN/WebTV 2.6 supports Flash 4
else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
// WebTV 2.5 supports Flash 3
else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
// older WebTV supports Flash 2
else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
else if ( isIE && isWin && !isOpera ) {
flashVer = ControlVersion();
}
return flashVer;
}

// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
versionStr = GetSwfVer();
if (versionStr == -1 ) {
return false;
} else if (versionStr != 0) {
if(isIE && isWin && !isOpera) {
// Given "WIN 2,0,0,11"
tempArray = versionStr.split(" "); // ["WIN", "2,0,0,11"]
tempString = tempArray[1]; // "2,0,0,11"
versionArray = tempString.split(","); // ['2', '0', '0', '11']
} else {
versionArray = versionStr.split(".");
}
var versionMajor = versionArray[0];
var versionMinor = versionArray[1];
var versionRevision = versionArray[2];

// is the major.revision >= requested major.revision AND the minor version >= requested minor
if (versionMajor > parseFloat(reqMajorVer)) {
return true;
} else if (versionMajor == parseFloat(reqMajorVer)) {
if (versionMinor > parseFloat(reqMinorVer))
return true;
else if (versionMinor == parseFloat(reqMinorVer)) {
if (versionRevision >= parseFloat(reqRevision))
return true;
}
}
return false;
}
}

function AC_AddExtension(src, ext)
{
if (src.indexOf('?') != -1)
return src.replace(/\?/, ext+'?');
else
return src + ext;
}

function AC_Generateobj(objAttrs, params, embedAttrs)
{
var str = '';
if (isIE && isWin && !isOpera)
{
str += '<object ';
for (var i in objAttrs)
str += i + '="' + objAttrs[i] + '" ';
for (var i in params)
str += '><param name="' + i + '" value="' + params[i] + '" /> ';
str += '></object>';
} else {
str += '<embed ';
for (var i in embedAttrs)
str += i + '="' + embedAttrs[i] + '" ';
str += '> </embed>';
}

document.write(str);
}

function AC_FL_RunContent(){
var ret =
AC_GetArgs
( arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
, "application/x-shockwave-flash"
);
AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_GetArgs(args, ext, srcParamName, classid, mimeType){
var ret = new Object();
ret.embedAttrs = new Object();
ret.params = new Object();
ret.objAttrs = new Object();
for (var i=0; i < args.length; i=i+2){
var currArg = args[i].toLowerCase();

switch (currArg){
case "classid":
break;
case "pluginspage":
ret.embedAttrs[args[i]] = args[i+1];
break;
case "src":
case "movie":
args[i+1] = AC_AddExtension(args[i+1], ext);
ret.embedAttrs["src"] = args[i+1];
ret.params[srcParamName] = args[i+1];
break;
case "onafterupdate":
case "onbeforeupdate":
case "onblur":
case "oncellchange":
case "onclick":
case "ondblClick":
case "ondrag":
case "ondragend":
case "ondragenter":
case "ondragleave":
case "ondragover":
case "ondrop":
case "onfinish":
case "onfocus":
case "onhelp":
case "onmousedown":
case "onmouseup":
case "onmouseover":
case "onmousemove":
case "onmouseout":
case "onkeypress":
case "onkeydown":
case "onkeyup":
case "onload":
case "onlosecapture":
case "onpropertychange":
case "onreadystatechange":
case "onrowsdelete":
case "onrowenter":
case "onrowexit":
case "onrowsinserted":
case "onstart":
case "onscroll":
case "onbeforeeditfocus":
case "onactivate":
case "onbeforedeactivate":
case "ondeactivate":
case "type":
case "codebase":
case "id":
ret.objAttrs[args[i]] = args[i+1];
break;
case "width":
case "height":
case "align":
case "vspace":
case "hspace":
case "class":
case "title":
case "accesskey":
case "name":
case "tabindex":
ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
break;
default:
ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
}
}
ret.objAttrs["classid"] = classid;
if (mimeType) ret.embedAttrs["type"] = mimeType;
return ret;
}



</script>


Code in my BODY tags...

<script language="JavaScript" type="text/javascript">
<!--
var requiredMajorVersion = 7;
var requiredMinorVersion = 0;
var requiredRevision = 0;
var hasReqestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
if (hasReqestedVersion) {
document.write("<%gotflash=1%>");
} else {
document.write("<%gotflash=0%>");
}
// -->
</script>
<font size="1" color="#CCCCCC"><%=gotflash%></font><br>
<%if gotflash=1 then%>

[EMBED FLASH HERE]

<%else%>

[ALTERNATE NON-FLASH CONTENT]

<%end if%>

SSJ
03-09-2007, 06:33 AM
Try Following:

if (hasReqestedVersion)
{
<% gotflash=1 %>
}
else
{
<% gotflash=0 %>
}

glenngv
03-09-2007, 06:51 AM
As degsy said, server-side scripts are processed first before the client-side scripts. They are not executed one after the other. Just stick with Javascript.

if (hasReqestedVersion) {
document.write('<object ...></object>'); //flash tag
}
else {
document.write('alternate flash content'); //non-flash content
}



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