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Shoutbox Problem

Frihost Forum Index -> Scripting -> Html, CSS and Javascript

Hello.

My shoutbox I have made seems to say "undefined" at the start of it.

This is my javascript code.

Code:

function getshouts() {
var shouts_box = document.getElementById('shouts');
var shoutbox_text;
jsongetshouts=GetXmlHttpObject()
if(jsongetshouts) {
   jsongetshouts.open("POST", "<?=$siteurl?>ajax/shoutbox.php");
   jsongetshouts.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
   jsongetshouts.onreadystatechange = function () {
      if (jsongetshouts.readyState == 4) {
         if (jsongetshouts.status == 200 || jsongetshouts.status == 0) {
            var response = eval("(" + jsongetshouts.responseText + ")");
            for(i=0;i < response.shoutbox.message.length; i++) {
            if (i%2) { rocolor = "2"; } else { rocolor = ""; }
               shoutbox_text += "<div class=\"conbgnb"+rocolor+"\">";
               shoutbox_text += "<strong><a href=\"<?=$siteurl?>profile/"+response.shoutbox.message[i].poster+"/\" class=\"tutoriallink\">"+response.shoutbox.message[i].poster+":</a></strong><br />";
               shoutbox_text += response.shoutbox.message[i].msgtext;
               shoutbox_text += "</div>";
            }
         shouts_box.innerHTML = shoutbox_text;
         }
      }
   };
   jsongetshouts.send("key=<?=$ajaxkey?>");
}
}

And this is the JSON code,

Code:

{"shoutbox":
{"message":[
   {"msgid": "2",
      "poster": "You",
      "msgtext": "hello me"
   },{"msgid": "1",
      "poster": "Me",
      "msgtext": "hello you"
   } ]
}
}

The code it puts into the the div (shouts_box.innerHTML)

Quote:

undefined<div class="conbgnb"><strong><a href="profile/DanielXP/" class="tutoriallink">DanielXP:</a></strong><br />same again Razz

Razz

</div><div class="conbgnb2"><strong><a href="profile/DanielXP/" class="tutoriallink">DanielXP:</a></strong><br />testing</div>

Thanks 4 ya help Smile

Smile

Any help yet?

What happens is that that you first declare the variable shoutbox_text:

Code:

var shoutbox_text;

but it's still undefined.

later you come to this code:

Code:

shoutbox_text += "<div class=\"conbgnb"+rocolor+"\">";

which is the same as

Code:

shoutbox_text = shoutbox_text + "<div class=\"conbgnb"+rocolor+"\">";

shoutbox_text is converted to a string, which is "undefined" and concatenated to the rest of the string.

To solve this just change the declaration to:

Code:

var shoutbox_text = "";

Thanks.

Also i have this code

Code:

function getstuff() {
clearTimeout(stufftimer);
var shouts_box = document.getElementById('shouts');
var shoutbox_text;
xmlgetstuff=GetXmlHttpObject()
if(xmlgetstuff) {
   xmlgetstuff.open("GET", "<?=$siteurl?>ajax/stuff.php", true);
   xmlgetstuff.onreadystatechange = function () {
      if (xmlgetstuff.readyState == 4) {
         if (xmlgetstuff.status == 200 || xmlgetstuff.status == 0) {
            var xmlDocument = xmlgetstuff.responseXML;
            glbmsg = xmlDocument.getElementsByTagName("glbmsg");
            if(glbmsg.length > 0) {
               var ntext = glbmsg[0].firstChild.data.replace(/\n/g, "<br />");
               Ext.MessageBox.alert('Message', ntext);
            }
            stufftimer = setTimeout('getstuff()', '25000')
         }
      }
   };
   xmlgetstuff.send(null);
}
}

It post 1 shout ok,

But if you try and post anoher one

Quote:

postshout is not a function
[Break on this error] postshout();

And you get that until you refresh and then again can only post one shout.

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