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AJax, jQuery and ASP (Classic)

Posted on 2010-09-16
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Last Modified: 2012-06-27
I have a calendar page I wrote in ASP.  

When a person clicks an event link, it reloads the same page with an eventID so that at the bottom of the page the event details appear.

I would like to change this to have the event details pop up in modal box without refreshing the page.  So I figure use jQuery and AJAX, two technologies I dont' know enough about...

I’m not sure if I’m in the neighborhood with my thought process, and my code isn't working, so I thought I'd share what I did in hopes that I could get some help...

1.Generate the link in ASP:  DateText = DateText & "<a class='littleLink' href='#' onclick='getEvent(" & objrs("eidNumber") & ")' name='modal'>"&objrs("eTitleOfEvent")&"</a>"

2.The Javascript function “getEvent” sends the event ID to a process page: calproc.asp (I've attached the code below)

3. calproc.asp writes the response.

Here's where I get fuzzy...

Since the name of the link asp generates is "modal", I assume that clicking it should trigger the jQuery.  Since the javascript fires, I assume that the response.write function will display on top of the modal box.

But ofcourse when you assume you make an a... well you get the point.

Something worth noting.  The html for the modal box is:

<div id="boxes">
      <div id="dialog" class="window">
          I want my data here.
      <a href="#"class="close"/>Close it</a>
      </div>
        <div id="mask"></div>
</div>

I dont' have this code in my page, I have the calproc.asp page generate it.  This is probably part of the problem, but I wasn't sure how else to get the "response.write" text into the area where the data should go.

I hope this makes sense.

thanks for your help!
jQuery code:
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.pack.js"></script>
<script>

$(document).ready(function() {	

	//select all the a tag with name equal to modal
	$('a[name=modal]').click(function(e) {
		//Cancel the link behavior
		e.preventDefault();
		
		//Get the A tag
		var id = $(this).attr('href');
	
		//Get the screen height and width
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();
	
		//Set heigth and width to mask to fill up the whole screen
		$('#mask').css({'width':maskWidth,'height':maskHeight});
		
		//transition effect		
		$('#mask').fadeIn(1000);	
		$('#mask').fadeTo("slow",0.8);	
	
		//Get the window height and width
		var winH = $(window).height();
		var winW = $(window).width();
              
		//Set the popup window to center
		$(id).css('top',  winH/2-$(id).height()/2);
		$(id).css('left', winW/2-$(id).width()/2);
	
		//transition effect
		$(id).fadeIn(2000); 
	
	});
	
	//if close button is clicked
	$('.window .close').click(function (e) {
		//Cancel the link behavior
		e.preventDefault();
		
		$('#mask').hide();
		$('.window').hide();
	});		
	
	//if mask is clicked
	$('#mask').click(function () {
		$(this).hide();
		$('.window').hide();
	});			
	
});
</script>

Javascript Code:
<script type="text/javascript">
function getEvent(did)
{
if (did.length==0)
  { 
  document.getElementById("txtHint").innerHTML="";
  return;
  }
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","calproc.asp?did="+did,true);
xmlhttp.send();
}
</script>

calproc.asp code:

eid = Request("did")
if isNumeric(eid) = false then
	Response.Write("Nothing found.")
Else
	if eid <> "" then
		sql = "Select * from myTable where eId = " & eid
		set objrs = objconn.execute(sql)
		if objrs.eof and objrs.bof then
		
		else
			EventName = objrs("eTitle")
			dEventDate = objrs("eDate")
			EventDesc = objrs("eLongDesc")
			EventLink = objrs("eLink")
			EventImage = objrs("eImage")
			if isNull(EventImage) = True then
				EventImage = ""
			End if
		end if
		Response.Write("<div id='boxes'>")
		Response.Write("<div id='dialog' class='window'>")
		
		Response.Write("<table border='0' cellpadding='0' cellspacing='0' width='100%' class='ventinfo'>")
		Response.Write("<tr><td class='eventTitle' colspan="2">" & EventName & " - " & dEventDate & "</td>")
		Response.Write("</tr><tr><td colspan='2' height='10px'></td></tr><tr>")
		if EventImage = "" then 
        Response.Write("<td></td>")
		else
        response.Write("<td><img src='" & EventImage & "' width='100px'/></td>")
		end if
        Response.Write("<td style='padding-left:5px;'>" & EventDesc & "</td></tr><tr><td colspan='2' height='10px'></td> </tr><tr><td></td>")
		Response.Write("<td style='padding-bottom:4px; padding-left:5px;'><a href='" & EventLink & "' target='_blank' class='eventLink'>Click here for more information!</a></td></tr></table>")
		Response.Write("</div></div>")
		Response.Write("<div id='mask'></div>")
	End if
end if

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Question by:slightlyoff
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2 Comments
 
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Accepted Solution

by:
rbgCODE earned 500 total points
ID: 33696559
Really the best way to do this is to have an external page like

functions.asp

that does all your database work, then when someone calls the javascript you can just have it pull back the code you got from functions.asp and then display it within a pop-up window.  

Your javascript would need to first have a call out, then look for a response back..

function ajaxGrab(writeDiv,urlBuilder){
 var nurl = "a_JAX.asp?" + urlBuilder + "&d=" + writeDiv + "";
 uLayer=writeDiv;
 if (document.getElementById(uLayer).innerHTML != "" && uLayer != "RecentHistory"){
   var styleObject = getStyleObject(uLayer);
   styleObject.display="";
 }
 else{
 //alert(nurl + " to " + uLayer);
 xmlHttp=GetXmlHttpObject(stateChanged);
 xmlHttp.open("GET", nurl , true);  
 xmlHttp.send(null);
 //magic.show('linkClicked');
 }
}  

function stateChanged(){  
 if (uLayer != ""){
  if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){
   document.getElementById(uLayer).innerHTML=xmlHttp.responseText;
   //ajaxShow(uLayer);
   //
   var styleObject = getStyleObject(uLayer);
   styleObject.display="";
   //
   //magic.hide('linkClicked');
  }
 }else{alert("No divName passed?");}
}

function ajaxHide(hideDiv){
var styleObject = getStyleObject(hideDiv);
 styleObject.display="none";
}

function ajaxShow(showDiv){
 var checkStyle = "none";
 var noStyle = "";
 var styleObject = getStyleObject(showDiv);
 if (styleObject.display == checkStyle){styleObject.display=noStyle;}
 else{styleObject.display=checkStyle;}
}
0
 
LVL 1

Author Closing Comment

by:slightlyoff
ID: 33737745
Thank you, I appreciate your help!
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