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Tuesday, February 12, 2008

Using two XMLHttpRequest objects - Sample AJAX Code

<html>
<head>
<title>Using two XMLHttpRequest objects</title>

<script language = "javascript">
var XMLHttpRequestObject = false;
var XMLHttpRequestObject2 = false;

if (window.XMLHttpRequest) {
XMLHttpRequestObject = new XMLHttpRequest();
XMLHttpRequestObject2 = new XMLHttpRequest();
} else if (window.ActiveXObject) {
XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
XMLHttpRequestObject2 = new ActiveXObject("Microsoft.XMLHTTP");
}

function getData(dataSource)
{
if(XMLHttpRequestObject) {
var obj = document.getElementById("targetDiv");
XMLHttpRequestObject.open("GET", dataSource);

XMLHttpRequestObject.onreadystatechange = function()
{
if (XMLHttpRequestObject.readyState == 4 &&
XMLHttpRequestObject.status == 200) {
obj.innerHTML = XMLHttpRequestObject.responseText;
}
}

XMLHttpRequestObject.send(null);
}
}

function getData2(dataSource, divID)
{
if(XMLHttpRequestObject2) {
var obj = document.getElementById("targetDiv");
XMLHttpRequestObject2.open("GET", dataSource);

XMLHttpRequestObject2.onreadystatechange = function()
{
if (XMLHttpRequestObject2.readyState == 4 &&
XMLHttpRequestObject2.status == 200) {
obj.innerHTML = XMLHttpRequestObject2.responseText;
}
}

XMLHttpRequestObject2.send(null);
}
}

</script>
</head>

<body>

<h1>Using two XMLHttpRequest objects</h1>

<form>
<input type = "button" value = "Display Message"
onclick = "getData('data.txt')">
<input type = "button" value = "Display Message 2"
onclick = "getData2('data2.txt')">
</form>

<div id="targetDiv">
<p>The fetched data will go here.</p>
</div>

</body>
</html>

//data.txt
This text was fetched using Ajax.

//data2.txt
This text was also fetched using Ajax.




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