Ajax例子

function GetXmlHttpObject()
{
  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
  return xmlHttp;
}


function ajaxSubmit(){
  var xmlHttp = GetXmlHttpObject();
  xmlHttp.onreadystatechange=function(){
    if(4==xmlHttp.readyState){
      if(200==xmlHttp.status){
        alert(xmlHttp.responseXML);
      }
    }
  }

  var submitURL = "/servlet/oneServlet?data1="+...;
  xmlHttp.open("post", submitURL, true);
  xmlHttp.setRequestHeader(,Content-type','application/x-www-form-urlencode');
  xmlHttp.send(null);
}