ajax display status problem

108 100+

Hi,
I have recently been going through ajax tutorials and i came up with the following codes..I am getting my readystate to be 0 which means it is nt initialised.Why don't I get a code of 4 and what doesn the code 0 really mean? How can I solve this problem ?

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<html>

<head>

    <script type="text/javascript">    

        function tr(){

            if (window.XMLHttpRequest)     // Object of the current windows

                { 

                        xhr = new XMLHttpRequest();   alert("firefox");  // Firefox, Safari, ...

                } 

            else 

                 if (window.ActiveXObject)   // ActiveX version

                     {

                            xhr = new ActiveXObject("Microsoft.XMLHTTP");alert("IE");  // Internet Explorer 

                     } alert(xhr.readyState);
 
                      xhr.onreadystatechange =function chk(){

                            if (xhr.readyState == 4)

                                {

                                      alert("I am ready");

                                } else 

                                    {

                                         alert("I am not ready");

                                    }

                    }

            }
 
</script>

</head>

<body>

<button onclick="tr()">tryme</button>
 
</body>

</html>

Thanks in adv

Feb 22 '10 #1

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1366

RamananKalirajan

608

512MB

The code what you have posted here is not completed one. For an Ajax statement a submission should be done. What you have did so far is creation of XMLHttpRequest object only. Using that object only you can make an Ajax call. Regarding the readstate code, following are the codes and its status

0 = uninitialized
1 = loading
2 = loaded
3 = interactive
4 = complete

Thanks and Regards
Ramanan Kalirajan

Feb 22 '10 #2

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