AJAX call running twice

loveccb · July 26, 2011

Hello all. My AJAX object is running twice. I've done my best to debug it, but I seem to be missing something.

The ajax page (getsummarydecision.php) loads simply sends an email and returns an image. When I run this page separately, only one email is sent. When I run this AJAX object, 2 emails are sent. Does anyone see anything obvious here?

The html:

<div id="div_gauge"></div>

<script type="text/javascript">

var dec_gauge = new AJAXobject('gauge','div_gauge');
dec_gauge.update('id=100');
</script>

The javascript:

function AJAXobject(div,type) {	//javascript object that checks the report status of each ordered report and displays status in page div
var that=this;
var updating = false;
//this.callback = function() {alert("timestamp " + timestamp);} 

 if (type == "gauge") {
	//Set url
	var url = "common/getsummary.php";

    var div_decision = document.getElementById(div);	    
    div_decision.innerHTML = "Calculating... <img src=\"images/ajax-loader.gif\" />";
}

    
//Update function
    this.update = function(passData) {                                
        if (updating==true) { return false; }                          
        updating=true;                                               
        var AJAX = null; 

   if (window.XMLHttpRequest){
		AJAX = new XMLHttpRequest();
   }else if (window.ActiveXObject){
	   AJAX = new ActiveXObject("Microsoft.XMLHTTP");
   }
   
   if (AJAX==null) {                                            
         alert("Your browser doesn't support AJAX.");                                                       
         return false;                                             
   } 
   else {
	   AJAX.onreadystatechange = function() {                      
            if (AJAX.readyState==4 && AJAX.status==200) {
			   LayerID.innerHTML=AJAX.responseText;                 
			   delete AJAX;                                         
                           updating=false;                                 
                                   that.callback();   
                     }                                                        // End Ajax readystate check.
         }  
	                            	
      var timestamp = new Date().getTime();

	  var uri=urlCall+'?'+passData+'&timestamp='+(timestamp*1);   

		AJAX.open("POST", uri, true);                              
         AJAX.send(null);                                          
         return true;                                             
   }   
    } //end update function  


//-----------------------------------------------------
   var LayerID = document.getElementById(div);                     // the layer associated with this object.
   var urlCall = url;                                                                   // the url associated with this object.
   
}

requinix · July 26, 2011

Are you sure you posted the actual code you have? I'm not. There are a few problems with it that break the script.

loveccb · July 26, 2011

Yes, you're correct requinix. I tried to summarize and inadvertently broke my own code. As it is:

<html>
<head>
<script type="text/javascript">	

	function AJAXobject(div,type) {	//javascript object that checks the report status of each ordered report and displays status in page div
		var that=this;
		var updating = false;
		//this.callback = function() {alert("timestamp " + timestamp);} 

	 if (type == "gauge") {
		//Set url
		var url = "common/getsummary.php";

		var div_decision = document.getElementById(div);	    
		div_decision.innerHTML = "Calculating... <img src=\"images/ajax-loader.gif\" />";
	}


	//Update function
	this.update = function(passData) {                                
		if (updating==true) { return false; }                          
		updating=true;                                               
		var AJAX = null; 

	   if (window.XMLHttpRequest){
			AJAX = new XMLHttpRequest();
	   }else if (window.ActiveXObject){
		   AJAX = new ActiveXObject("Microsoft.XMLHTTP");
	   }
	   
	   if (AJAX==null) {                                            
			 alert("Your browser doesn't support AJAX.");                                                       
			 return false;                                             
	   } 
	   else {
		   AJAX.onreadystatechange = function() {                      
				if (AJAX.readyState==4 && AJAX.status==200) {
				   LayerID.innerHTML=AJAX.responseText;                 
				   delete AJAX;                                         
				   updating=false; 					
				   //that.callback();   
				 }                                                        // End Ajax readystate check.
			 }  

		  var timestamp = new Date().getTime();

		  var uri=urlCall+'?'+passData+'&timestamp='+(timestamp*1);   

			AJAX.open("POST", uri, true);                              
			 AJAX.send(null);                                          
			 return true;                                             
	   }   
	} //end update function  


	//-----------------------------------------------------
	   var LayerID = document.getElementById(div);                     // the layer associated with this object.
	   var urlCall = url;                                              // the url associated with this object.
	   
}
</script>
</head>
<body>
<div id="div_gauge"></div>
<script type="text/javascript">	
	var dec_gauge = new AJAXobject('div_gauge','gauge');
		dec_gauge.update('id=100');
</script>
</body>
</html>

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