jsp代码实例第286课

code286.js

/**
 * 
 */

String.prototype.lenB = function()
{
  return this.replace(/[^\x0-\xf]/g,"##").length;
}

function getXMLHTTPRequest()
{
  var myRequest = null;
  if (window.XMLHttpRequest)
    {
      myRequest = new XMLHttpRequest();
    }
  else if (window.ActiveXObject)
  {
      myRequest = new ActiveXObject("Microsoft.XMLHTTP");
    }

  return myRequest;
}

function send()
{
  var name = document.getElementById("name");
  try
  {
    var myRequest = getXMLHTTPRequest();
    if(myRequest)
    {
      myRequest.onreadystatechange = function()
      {
        if(myRequest.readyState == 4)
        {
          window.alert(myRequest.responseText);
        }

      };

      myRequest.open("POST","/test02/page10/pack07.code288",true);
      var msg = "name=" + name.value;
      myRequest.setRequestHeader("Content-Length",msg.lenB());
      myRequest.setRequestHeader("content-type","application/x-www-form-urlencoded");
      myRequest.send(msg);
    }
  }
  catch(e)
  {
    window.alert(e);
  }
}