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<title>AJAX The Server-Side Script</title>
 
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function ajaxFunction()
  {
  var xmlHttp;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
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    catch (e)
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        {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
      catch (e)
        {
        alert("Your browser does not support AJAX!");
        return false;
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    }
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
        {
        document.myForm.time.value=xmlHttp.responseText;
        }
      }
    xmlHttp.open("GET","time.asp",true);
    xmlHttp.send(null);
  }
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<b>AJAX Basic</b><br />
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<h1>AJAX - The Server-Side Script</h1>
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<a href="ajax_example_suggest.asp"><img border="0" src="../images/btn_next.gif" width="100" height="20" alt="Next" /></a>
<hr />
<h2>AJAX - The Server-Side ASP Script</h2>
<p>Now we are going to create the script that displays the current 
server time.</p>
<p>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 &quot;time.asp&quot; looks like this:</p>

<table class="ex" width="100%" border="1" id="table13"><tr><td>
<pre>&lt;%
response.expires=-1
response.write(time)
%&gt;</pre>
</td></tr></table>
<p><b>Note:</b> The Expires property sets how long (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.</p>
<hr />

<h2>Run Your AJAX Application</h2>
<p>Try the AJAX application by typing some text into the Name text 
box below, then click inside the Time text box:</p>
<form name="myForm">
Name: <input type="text"
onkeyup="ajaxFunction();" name="username" />
Time: <input type="text" name="time" />
</form>
<p>The Time text box gets the server's time from &quot;time.asp&quot; 
file without reloading the page!</p>
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