VESELOV.SUMY.UA

POST через AJAX

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POST это тот же GET только параметры передаются скрыто, поэтому формировать строку нужно самому (function get).

ajax:

var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById('myspan').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {
      var poststr = "usr=" + encodeURI( document.getElementById("usr").value ) + "&pass=" + encodeURI( document.getElementById("pass").value );
      makePOSTRequest('post.php', poststr);
   }

вызывается:

<form action="javascript:get(document.getElementById('myform'));" name="myform" id="myform">
<input name="usr" id="usr" type="text" size="10" maxlength="10" /><br/><br/>
<input name="pass" id="pass" type="text" size="10" maxlength="10" /><br/><br/>
<input type="button" name="button" value="Submit" onclick="javascript:get(this.parentNode);">
</form>

пост обработчик:

<?
print_r($_POST);
?>

ДЕМО POST