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Asked: 2026-05-17T22:11:13+00:00

I’m pretty new to javascript / ajaax / jquery, but I was able to

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I’m pretty new to javascript / ajaax / jquery, but I was able to figure out the following ajax script. Unfortunately it doesn’t work cross browser… as far as I can tell, not in any IE versions… I’m wondering if anyone can help me out with how to convert it to jquery? I heard that is way better than using ajax. 

<script type="text/javascript">
function checkRefresh(str)
{
    if (str=="") {
        document.getElementById("lastCallID").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) {
            if (document.getElementById("lastCallID").innerHTML < xmlhttp.responseText) {
                GoPopUp();  
            } else {
                setTimeout('checkRefresh()',15000)
            }
        }
    }
    xmlhttp.open("GET","getnewid.php",true);
    xmlhttp.send();
}

update: I have the following code. But I still can’t get it to work. I want this ajax request to be sent every 15 seconds… It calls this function getnewid.php and that function echo’s out an ID… I then want the ajax to compare the id it got from getnewid.php with the “LastCallID” if the new ID is greater I want it to call this function GoPopUp. If the new ID isn’t greater I want it to call itself. I initialzed this ajax request by doing 

<script type="text/javascript">

$.ajax({
url: “getnewid.php”,
success: function(data) {
if (document.getElementById(“lastCallID”).innerHTML < data)
{
GoPopUp();
}
else
{
setTimeout(‘$.ajax()’,15000)
}
}
});

EDIT: @Ben, this is how I’ve implemented it.
(For what ever reason I can’t get all the code to show up, please see attached screenshot)
http://www.screencast.com/users/bibbles10504/folders/Jing/media/7e631bd9-e9df-4cb9-ab4f-a7672bbea0a0

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1 Answer

  1. Editorial Team
    <head>
    .......

    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js" type="text/javascript"></script>

    <script type="text/javascript">
        $(document).ready(function() {
            initialize();
            showClock();

            (function checkRefresh() {
                $.ajax({
                    url: 'getnewid.php',
                    success: function(data) {
                        if (parseInt($('#lastCallID').html()) < parseInt(data)) GoPopUp();
                        else setTimeout(checkRefresh, 15000);
                    }
                });
            })();
        });
    </script>

    .......
</head>

<body>
    .......
</body>
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