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Newbie Ajax Question regarding the on click event

Tech boy

By Tech boy
in Javascript Help

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Tech boy Newbie

Tech boy

Posted
Posted

Hi I am writing my first AJAX page I am not using a library at the moment I just having a look at things and trying to learn.  The page I am building is a dummy factory info board showing how many units have been built so far in the day.

 

I have a button on my page at the moment this will be replaced by a timer event, the first time this button is pressed the everything works great and I get a value but when I press the button again the on click event doesn't fire.

 

I am thinking I am missing something obvious or is their anything but AJAX programming that would stop the event happening?

 

thanks

Tech boy

Tech boy Newbie

Tech boy

Posted
  • Author
Posted

Hi here is the code index html first and then GetLineValue.php, is this format ok or should it be posted differently?

 

thanks

 

<html>

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

 

<head>

<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />

<title>BBC Live Streams</title>

 

<script type="text/javascript" src="http://www.bbc.co.uk/emp/swfobject.js"></script>

<script type="text/javascript" src="http://www.bbc.co.uk/emp/embed.js"></script>

<!-- please do not include any scripts below this line in public bbc.co.uk pages. -->

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

<link href="style.css" rel="stylesheet" type="text/css" media="all" />

<script type="text/javascript" src="http://www.bbc.co.uk/cs/jst/mod/1/jst_core.v1.2.js"></script>

<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/shCore.js"></script>

 

<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/shBrushJScript.js"></script>

<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/prototype.js"></script>

<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/scriptaculous.js?load=effects"></script>

 

<!--this is the AJAX Script -->

<script type="text/javascript">

 

function loadXMLDoc()

{

var xmlhttp;

if (window.XMLHttpRequest)

  {// code for IE7+, Firefox, Chrome, Opera, Safari

  xmlhttp=new XMLHttpRequest();

  }

else

  {// code for IE6, IE5

  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

  }

xmlhttp.onreadystatechange=function()

  {

  if (xmlhttp.readyState==4 )

    {

    document.getElementById("PHPVal").innerHTML=xmlhttp.responseText;

    }

  }

 

xmlhttp.open("GET","GetLineValue.php?q="+document.getElementById('PHPVal').value,true);

 

xmlhttp.send();

}

</script>

 

</head>

 

<div id="container">

    <div id="leftPanel">

     

        <div id="emp1" class="player" style="float:left">

<p>In order to see this content you need to have both <a href="http://www.bbc.co.uk/webwise/askbruce/articles/browse/java_1.shtml" title="BBC Webwise article about enabling javascript">Javascript</a> enabled and <a href="http://www.bbc.co.uk/webwise/askbruce/articles/download/howdoidownloadflashplayer_1.shtml" title="BBC Webwise article about downloading">Flash</a> installed. Visit <a href="http://www.bbc.co.uk/webwise/">BBC Webwise</a> for full instructions</p>

 

</div>

 

<script type="text/javascript">

 

  dp.SyntaxHighlighter.HighlightAll('onceCode');

 

  var width= 793;

  var height= 650; 

 

  //var width= 640;

  //var height= 395; 

  var playlist;

  var config; 

  var revision; 

 

function reload(url) {

  var emp = new embeddedMedia.Player();

  emp.setWidth(width);

  emp.setHeight(height);

  emp.setDomId("emp1");

  emp.set("config_settings_autoPlay","true");

  playlist = "http://www.bbc.co.uk/emp/simulcast/"+url+".xml";

  emp.setPlaylist(playlist);

  config = "http://www.bbc.co.uk/emp/simulcast/config_"+url+".xml";

  emp.setConfig(config);

  emp.write(); 

  updateEmbed();

}

 

function updateEmbed() {

  $('codeWrap').update('<pre name="code" class="js:nogutter" id="embedCode"></pre>');

  $('embedCode').update("var emp = new embeddedMedia.Player();"+"\n"+

                        "emp.setWidth('"+width+"');"+"\n"+

                        "emp.setHeight('"+height+"');"+"\n"+

                        "emp.setPlaylist('"+playlist+"');"+"\n"+

                        "emp.setConfig('"+config+"');"+"\n"+

                        "emp.write();");           

  dp.SyntaxHighlighter.HighlightAll('code');

}

 

reload("bbc_news24");

 

</script>

 

   

</div>

 

    <div id="rightPanel">

    <div id="PHPVal"></div>       

    <b></b>

    <button type="button" onclick="loadXMLDoc()">Change Content</button>

</div>

</div>

<div id="tickerTape"></div>   

</html>

 

 

 

 

<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

        <title></title>

    </head>

    <body>

        <?php

     

// Show all information, defaults to INFO_ALL

//phpinfo();

       

//Connect to mysql and connect to the database test       

        $q=$_GET["q"];

        $q = $q + 1;

        echo $q;

        //function RetrieveCount($RealLine)

        //{

        //$con = mysql_connect("localhost","root","");

        //if (!$con)

        //{

        //die('could not connect:'. mysql_error());

        //}

       

        //mysql_select_db("test",$con);

        //$_line = $RealLine;

        //$result = mysql_query("SELECT count(`SCAN_ASSEMBLED`) as outstanding FROM `table 1` WHERE (`REAL_LINE` = '$_line' ) and (scan_assembled = 1) and (SCAN_ASSEMBLED_DATE = curdate())");

        //while ($row = mysql_fetch_array($result))

        //{

        //unedit above and allow $row to equal database value   

        //$row = 99;

        //return ($row);

        //close the database connection

  //    mysql_close($con);

        //}

        ?>

    </body>

</html>

 

 

 

Tech boy Newbie

Tech boy

Posted
  • Author
Posted

Sorry I'll try again with the tags

 

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

<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>BBC Live Streams</title>

<script type="text/javascript" src="http://www.bbc.co.uk/emp/swfobject.js"></script>
<script type="text/javascript" src="http://www.bbc.co.uk/emp/embed.js"></script>
<!-- please do not include any scripts below this line in public bbc.co.uk pages. -->
<link type="text/css" rel="stylesheet" href="SyntaxHighlighter.css" />
<link href="style.css" rel="stylesheet" type="text/css" media="all" />
<script type="text/javascript" src="http://www.bbc.co.uk/cs/jst/mod/1/jst_core.v1.2.js"></script>
<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/shCore.js"></script>

<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/shBrushJScript.js"></script>
<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/prototype.js"></script>
<script type="text/javascript" src="http://www.bbc.co.uk/emp/simulcast/scriptaculous.js?load=effects"></script>

<!--this is the AJAX Script -->
<script type="text/javascript">

function loadXMLDoc()
{
var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 )
    {
    document.getElementById("PHPVal").innerHTML=xmlhttp.responseText;
    }
  }

xmlhttp.open("GET","GetLineValue.php?q="+document.getElementById('PHPVal').value,true);

xmlhttp.send();
}
</script>

</head>

<div id="container">
    <div id="leftPanel">
     
        <div id="emp1" class="player" style="float:left">
<p>In order to see this content you need to have both <a href="http://www.bbc.co.uk/webwise/askbruce/articles/browse/java_1.shtml" title="BBC Webwise article about enabling javascript">Javascript</a> enabled and <a href="http://www.bbc.co.uk/webwise/askbruce/articles/download/howdoidownloadflashplayer_1.shtml" title="BBC Webwise article about downloading">Flash</a> installed. Visit <a href="http://www.bbc.co.uk/webwise/">BBC Webwise</a> for full instructions</p>

</div>

<script type="text/javascript">

  dp.SyntaxHighlighter.HighlightAll('onceCode');

  var width= 793;
  var height= 650;   

  //var width= 640;
  //var height= 395;   
  var playlist;
  var config;   
  var revision; 

function reload(url) {
  var emp = new embeddedMedia.Player();
  emp.setWidth(width);
  emp.setHeight(height);
  emp.setDomId("emp1");
  emp.set("config_settings_autoPlay","true");
  playlist = "http://www.bbc.co.uk/emp/simulcast/"+url+".xml";
  emp.setPlaylist(playlist);
  config = "http://www.bbc.co.uk/emp/simulcast/config_"+url+".xml";
  emp.setConfig(config);
  emp.write(); 
  updateEmbed();
}

function updateEmbed() {
  $('codeWrap').update('<pre name="code" class="js:nogutter" id="embedCode"></pre>');
  $('embedCode').update("var emp = new embeddedMedia.Player();"+"\n"+
                        "emp.setWidth('"+width+"');"+"\n"+
                        "emp.setHeight('"+height+"');"+"\n"+
                        "emp.setPlaylist('"+playlist+"');"+"\n"+
                        "emp.setConfig('"+config+"');"+"\n"+
                        "emp.write();");           
  dp.SyntaxHighlighter.HighlightAll('code');
}

reload("bbc_news24");

</script>

   
</div>
   
    <div id="rightPanel">
    <div id="PHPVal"></div>       
    <b></b>
    <button type="button" onclick="loadXMLDoc()">Change Content</button>
</div>
</div>
<div id="tickerTape"></div>     
</html>

 

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title></title>
    </head>
    <body>
        <?php
       
// Show all information, defaults to INFO_ALL
//phpinfo();
       
//Connect to mysql and connect to the database test       
        $q=$_GET["q"];
        $q = $q + 1;
        echo $q;
        //function RetrieveCount($RealLine)
        //{
        //$con = mysql_connect("localhost","root","");
        //if (!$con)
        //{
        //die('could not connect:'. mysql_error());
        //}
       
        //mysql_select_db("test",$con);
        //$_line = $RealLine;
        //$result = mysql_query("SELECT count(`SCAN_ASSEMBLED`) as outstanding FROM `table 1` WHERE (`REAL_LINE` = '$_line' ) and (scan_assembled = 1) and (SCAN_ASSEMBLED_DATE = curdate())");
        //while ($row = mysql_fetch_array($result))
        //{
        //unedit above and allow $row to equal database value   
        //$row = 99;
        //return ($row);
        //close the database connection
   //     mysql_close($con);
        //}
        ?>
    </body>
</html>

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