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[SOLVED] Need Help Using AJAX To Send 2 Variables In A Query


phpQuestioner

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I am new to AJAX; I am trying to learn, but I learning this slow then regular PHP. I  am trying to get this script to work that I found on this site to send a query string with two php variables in it. This thing is; it's not working - so anyway, can some one tell what I need to correct to get it working?

 

<script type="text/javascript">
function createRequestObject() {

   var req;

   if(window.XMLHttpRequest){
      // Firefox, Safari, Opera...
      req = new XMLHttpRequest();
   } else if(window.ActiveXObject) {
      // Internet Explorer 5+
      req = new ActiveXObject("Microsoft.XMLHTTP");
   } else {
      // There is an error creating the object,
      // just as an old browser is being used.
      alert('Problem creating the XMLHttpRequest object');
   }

   return req;

}

// Make the XMLHttpRequest object
var http = createRequestObject();

function sendRequest(cat,updown) {

   // Open PHP script for requests
   http.open('get', 'http://domain.com/sub1/items.php?cat='+cat&updown='+updown);
   http.onreadystatechange = handleResponse;
   http.send(null);

}

function handleResponse() {

   if(http.readyState == 4 && http.status == 200){

      // Text returned FROM the PHP script
      var response = http.responseText;

      if(response) {
         // UPDATE ajaxTest content
         document.getElementById("ajaxTest").innerHTML = response;
      }

   }

}
</script>
</head>
<body>

<span id="ajaxTest"></span>

<br><br><br>

<a href="#" onClick="sendRequest('make','asc');">Test</a>

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