// 1.
Anonymous Callback Functions
<!DOCTYPE html>
<html>
<head>
<script>
function loadDoc()
{
var xhttp
= new XMLHttpRequest();
//
Callback using Anonymous Function
xhttp.onreadystatechange = function()
{
if (this.readyState == 4
&& this.status == 200)
{
document.getElementById("id1").innerHTML = this.responseText;
}
};
xhttp.open("GET",
"Hello.txt", true);
xhttp.send();
}
</script>
</head>
<body>
<div
id="id1">
<h2>The
XMLHttpRequest Object</h2>
<h2>Ajax
– Anonymous Callback Functions <h2>
<button
type="button" onclick="loadDoc()">Change
Content</button>
</div>
</body>
</html>
//
Input file - Hello.txt
<h2>Hello
and Welcome to Ajax</h2>
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