Problem updating iframe content from server side

**tony007** · Apr 7th, 2007, 03:05 PM

Hi ronald thanks for your reply. i even add following:

Header('Cache-Control: no-cache');
Header('Pragma: no-cache');

but still the data does not change. I can see that request is being made and i changed the iframe contnt manually and i still don't see the updated data get fetched!! . could you look at this code beleow and let me know why updated data does not get fetched even when i am making frequen request to server?Thanks

Note: i am making frequen call to getnewdata() function

data output on screen : But it never change even when i update iframecontent.php manually and make frequen call to it!!

iframe inside javascript:

Code:

<div id="text" style="z-index:90;" class="chatWindowTextDisplay"
title="Chat Transcript - "
alt="Chat Transcript -"
><iframe name="textFrame" id="textFrame" src="http://localhost/iframeContent.php?cmd=file&file=chatTemplate&template=chatText&amp;site=676789&amp;sessionkey=H9030219168890559071K46359640" frameborder="0" border="0" width="350" height="220" class="chatWindowTextFrame"
title="Chat Transcript - "
alt="Chat Transcript - "
>This functionality requires frames. </a>.</iframe>
</div>


<script type="text/javascript">

document.getElementById("text").tabindex = 3;
document.getElementById("textFrame").tabindex = 3;

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

document.writeln('<div id="hiddentext" style="z-index:0;position:absolute;visibility:hidden;left:0;top:13px">'+
    '<iframe name="lpCommFrame" id="lpCommFrame" src="http://localhost/iframecontent.php" frameborder="0" border="0" width="350" height="220" title="Background">'+
    'This functionality requires frames. </iframe>'+
'</div>');

function getnewdata()
{
var u = "http://localhhost/iframecontent.php/?cmd=file&file=chatText&site=676789&sessionkey=H7221484707459237529K46228278&d=" + jsGetDate();
		document["lpCommFrame"].location = u;
jsCheckCommFrame();

}

function jsGetDate()
{
	var d = new Date();
	return d.getTime();
}

function jsCheckCommFrame() {

//alert("jscheckcommframe");

	var win = window.frames['lpCommFrame'];
	try{
        if ((typeof(win) == "undefined") || (win.document.body == null) || (typeof(win.document.body) == "undefined"))
            return;
	}catch(e){
	    reportError(e,'jsCheckCommFrame_win');
	    return;
    }

    //test for server error
	var newtext = win.document.body.innerHTML;
	if ( newtext!=null && typeof(newtext)!="undefined" && (newtext!="")) {
		var controlmsg = newtext.substring(0,10);
		if (controlmsg == "<br>Server") {
		    lpOnSendTextFail( lastText, 1);
		    return;
		}
    }

    var textArray = win.chatLines;
    if(textArray==null) return;
    var lineCount = textArray.length;
    if (lineCount != prevLineCount) {
        prevLineCount = lineCount;

        //convert chat array
        var chatLines = new Array();
        for(iline=0;  iline<lineCount;  iline++){
            var jLine = textArray[iline];
            if(jLine.length!=4) continue;
            chatLines[iline] = new LPChatLine( jLine[0], jLine[1], jLine[2], jLine[3] );
        }
        if( lpLastLineIndex != chatLines.length ) {
            lpOnAddLines( chatLines, lpLastLineIndex );
            lpLastLineIndex = chatLines.length;
        }

        unsentLine = "";
        // If we have unsent lines because we switched from Java to Javascript - send the next line.
        if (sendingUnsentLines){
            sendUnsentLines();
        }
    }

    //push url
    var pushURL = win.pushURL;
    win.pushURL = "";
    if (pushURL != "") {
        lpOnURLPush(pushURL);
    }

	//handle control command
	var controlCommand = win.controlCommand;
	win.controlCommand = "";
	if ((typeof(controlCommand) != "undefined") && (controlCommand != null) && (controlCommand != "")) {
		handleControlCommand(controlCommand);
	}

}

<script>

iframecontent.php:

Code:

<?
  Header('Cache-Control: no-cache');
  Header('Pragma: no-cache');
  ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="EN" xml:lang="EN">
<head>

<link href="./window.css" rel="stylesheet" type="text/css" />


<title>Window</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
<meta name="description" content="Live " />
<meta name="keywords" content="live" />
<style>
BODY {
  width:334px
}
</style>
</head>
<body bgcolor="white" style="margin: 0" onload="scrollwindow()" class="contentWrapper">
<script type="text/javascript">
var chatLines = [["I am testing this i frame","Bob","4","1175958864183"],
["i do not know how this is working","Bob","1","1175958880480"],
["could any one tell me","Bob","1","1175958883949"]
];
function scrollwindow()
{
	if ((navigator.appName.indexOf("Netscape") < 0) || (parseInt(navigator.appVersion)>4))
		scroll(0, 50000);
}

var wasInChat = true;
var pushURL = "";
var controlCommand = "";
document.controlCommand = controlCommand;

if (navigator.appName.indexOf("Netscape") >= 0)
	scroll(0, 50000);

</script>
<noscript><p>
This functionality requires JavaScript. Please enable JavaScript and try again.

</noscript>
<table border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
  <td dir="ltr" class="chatContent">
  	 <div id="chatContentDiv" style="font-size: smaller; font-family: arial, arial, helvetica, geneva;">
	<span style="color: blue;"><b><span class="OperatorName">Bob: </span></b></span>
<span style="color: black;"><span class="OperatorText">I am testing this i frame</span><br /></span>
<span style="color: blue;"><b><span class="OperatorName">Bob: </span></b></span>
<span style="color: black;"><span class="OperatorText">i do not know how this is working</span><br /></span>
<span style="color: blue;"><b><span class="OperatorName">Bob: </span></b></span>
<span style="color: black;"><span class="OperatorText">could any one tell me</span><br /></span>

    </div>
  </td>
</tr>
</table>
</body>
</html>

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