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AJAX - The Server-Side Script

AJAX - The server-side ASP script

Now we are going to create the server-side script that displays the current time.

The responseText property (explained in the previous chapter) will store the data returned from the server. Here we want to send back the current time.

The code in "time.asp" looks like this:

<%
response.expires=-1
response.write(time)
%>

Note: The response.expires command sets how long time (in minutes) a page will be cached on a browser before it expires. If a user returns to the same page before it expires, the cached version is displayed. response.expires=-1 indicates that the page will never be cached.

AJAX - The server-side PHP script

The code below shows how to write the server-side code in PHP ("time.php"):

<?php
// Date in the past
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Cache-Control: no-cache");
echo(date("G:i:s",time()));
?>

Run your first AJAX application

Try the AJAX application by typing some text in the "Name" input field below:

The "Time" input field gets the server's time from "time.asp", without reloading the page!

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