<!DOCTYPE html>
<html>
<body>
<h2>AJAX</h2>
<button type="button" onclick="loadDoc()">Request data</button>
<p>Click the button several times to see if the time changes, or if the file is cached.</p>
<p id="demo"></p>
<script>
function loadDoc() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange=function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
document.getElementById("demo").innerHTML = xhttp.responseText;
}
};
xhttp.open("GET", "demo_get.asp?t=" + Math.random(), true);
xhttp.send();
}
</script>
</body>
</html>