lionhylra/ajax.callback_func.html

## ajax.callback_func.html
<!DOCTYPE html>
<html>
<head>
<script>
var xmlhttp;
function loadXMLDoc(url,cfunc)
{
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=cfunc;
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
function myFunction()
{
loadXMLDoc("ajax_info.txt",function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
    }
  });
}
</script>
</head>
<body>

<div id="myDiv"><h2>Let AJAX change this text</h2></div>
<button type="button" onclick="myFunction()">Change Content</button>

</body>
</html>

## ajax.example.html
<!DOCTYPE html>
<html>
<head>
<script>
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 && xmlhttp.status==200)
    {
    /*
    readyState
      Holds the status of the XMLHttpRequest. Changes from 0 to 4:
      0: request not initialized
      1: server connection established
      2: request received
      3: processing request
      4: request finished and response is ready
    status
      200: "OK"
      404: Page not found
    */
    document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
    //document.getElementById("myDiv").innerHTML=xmlhttp.responseXML;
    }
  }
xmlhttp.open("GET","ajax_info.txt",true);
xmlhttp.send();
}
</script>
</head>
<body>

<div id="myDiv"><h2>Let AJAX change this text</h2></div>
<button type="button" onclick="loadXMLDoc()">Change Content</button>

</body>
</html>

## ajax.xml.example.html
<!DOCTYPE html>
<html>
<head>
<script>
function loadXMLDoc(url)
{
var xmlhttp;
var txt,x,xx,i;
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 && xmlhttp.status==200)
    {
    txt="<table border='1'><tr><th>Title</th><th>Artist</th></tr>";
    x=xmlhttp.responseXML.documentElement.getElementsByTagName("CD");
    for (i=0;i<x.length;i++)
      {
      txt=txt + "<tr>";
      xx=x[i].getElementsByTagName("TITLE");
        {
        try
          {
          txt=txt + "<td>" + xx[0].firstChild.nodeValue + "</td>";
          }
        catch (er)
          {
          txt=txt + "<td> </td>";
          }
        }
      xx=x[i].getElementsByTagName("ARTIST");
        {
        try
          {
          txt=txt + "<td>" + xx[0].firstChild.nodeValue + "</td>";
          }
        catch (er)
          {
          txt=txt + "<td> </td>";
          }
        }
      txt=txt + "</tr>";
      }
    txt=txt + "</table>";
    document.getElementById('txtCDInfo').innerHTML=txt;
    }
  }
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
</script>
</head>
<body>

<div id="txtCDInfo">
<button onclick="loadXMLDoc('cd_catalog.xml')">Get CD info</button>
</div>

</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<script>
	var xmlhttp;
	function loadXMLDoc(url,cfunc)
	{
	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=cfunc;
	xmlhttp.open("GET",url,true);
	xmlhttp.send();
	}
	function myFunction()
	{
	loadXMLDoc("ajax_info.txt",function()
	{
	if (xmlhttp.readyState==4 && xmlhttp.status==200)
	{
	document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
	}
	});
	}
	</script>
	</head>
	<body>

	<div id="myDiv"><h2>Let AJAX change this text</h2></div>
	<button type="button" onclick="myFunction()">Change Content</button>

	</body>
	</html>