Ajax invokes a simple instance _ajax related

The examples in this article describe the methods of Ajax invocation. Share to everyone for your reference, specific as follows:

Populates the div with the specified ID with the data returned by the URL

Client: test.html

<script> function Createxmlhttp () {var ret = null;
  try {ret = new ActiveXObject (' msxml2.xmlhttp ');
    catch (e) {try {ret = new ActiveXObject (' microsoft.xmlhttp ');
    The catch (ee) {ret = null;
  } if (!ret && typeof xmlhttprequest!= ' undefined ') ret = new XMLHttpRequest ();
return ret;
 function Loadxmltoelement (Fragment_url, element_id) {var element = document.getElementById (element_id);
 element.innerhtml = '  data loading ...<br/> ';
 var xmlhttp = createxmlhttp ();
 Xmlhttp.open ("Get", fragment_url); Xmlhttp.onreadystatechange = function () {if (xmlhttp.readystate = 4 && xmlhttp.status =) {//alert x
  Mlhttp.responseXML.getElementsByTagName ("Data") [0].childnodes[0].nodevalue);
  element.innerhtml = unescape (Xmlhttp.responseXML.getElementsByTagName ("Data") [0].childnodes[0].nodevalue); if (!element.innerhtml | | element.innerhtml = = "/n") {try{element.innerhtml = unescape (Xmlhttp.responsexml.firstchild.childnodes[1].nodevalue); 
}catch (e) {}}}} xmlhttp.send (null);
 } </script> <div id= "Data" > </div> <script> var url= "T.xml";
 alert (URL);
Loadxmltoelement (URL, "data");

 </script>

Populates the div with the specified ID with the data returned by the URL

Service side:

Test.xml

<?xml version= ' 1.0 ' encoding= ' utf-8 '?>
<data>
<![ cdata[This is 
a test
]]>
</data>

Note The server returns the CDATA format data, which can be any HTML code inside

I hope this article will help you with Ajax programming.