populating dropdown values

vinod_yadav1919 · August 9th, 2005, 12:16 PM

Hii Rupen !!
No probs
Hope this will help you

<script>
var req;
function blr()
{
url="http://myurl_ip/vinodR&D/optionvalue.html"
    req = false;
    // branch for native XMLHttpRequest object
    if(window.XMLHttpRequest) {
        alert("hii")
        try {
            req = new XMLHttpRequest();
        } catch(e) {
            req = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
        try {
            req = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
            try {
                req = new ActiveXObject("Microsoft.XMLHTTP");
            } catch(e) {
                req = false;
            }
        }
    }
    if(req) {
        req.onreadystatechange = processReqChange;
        req.open("GET", url, true);
        req.send();
    }
}

function processReqChange()
{

    if (req.readyState == 4) {

        if (req.status == 200) {

                    var xmlDOM = new ActiveXObject("Microsoft.XMLDOM");
                        xmlDOM.loadXML(req.ResponseText);

                        var oNode = xmlDOM.documentElement.firstChild;

                        var n=0;
                        selectedvalue=document.myform.myid.value
                        var outputstr
                        outputstr=""
                        if(oNode != null)
                        {

                                    while (oNode != null)
                                    {
                                        if(selectedvalue==n)
                                        {
                                        outputstr=oNode.text
                                        break;
                                        }
                                        oNode = oNode.nextSibling;
                                        n++;
                                    }

                            } var obj
                                                                            parentobj=document.getElementById("myselbox")

                                                                            objarr=outputstr.split("|")

                                                                            for(i=0;i<objarr.length;i++)
                                                                            {

                                                                            chld=objarr[i].split("~")
                                                                            myname=chld[0];
                                                                            myvalue=chld[1];
                                                                            obj=new Option(myname,myvalue)
                                                                            parentobj[i]=obj
                                                                            }
            }
    }
}
</script>
<body onload="blr()">

<form name="myform">

Select Your Choice<select id="myid" name="myid" onchange="blr()">
<option value="1">AllRecord With 1</option>
<option value="2">AllRecord With 2</option>
<option value="3">AllRecord With 3</option>
<option value="4">AllRecord With 4</option>
</select>
<br>
Dynamic Select Box<select id="myselbox" name="myselbox">
</select>

</form>

</body>

<response>
<option1>Name1~1|Name2~2|Name3~3|Name4~4|Name5~5|N ame6~6|Name7~7|Name8~8|Name9~9|Name10~10|Name11~11 </option1>
<option1>Vinod1~1|Vinod2~2|Vinod3~3|Vinod4~4|Vinod 5~5|Vinod6~6|Vinod7~7|Vinod8~8|Vinod9~9|Vinod10~10 |Vinod11~11</option1>
<option1>Rupen1~1|Rupen2~2|Rupen3~3|Rupen4~4|Rupen 5~5|Rupen6~6|Rupen7~7|Rupen8~8|Rupen9~9|Rupen10~10 |Rupen11~11</option1>
<option1>Hello1~1|Hello2~2|Hello3~3|Hello4~4|Hello 5~5|Hello6~6|Hello7~7|Hello8~8|Hello9~9|Hello10~10 |Hello11~11</option1>
<option1>Vijay1~1|Vijay2~2|Vijay3~3|Vijay4~4|Vijay 5~5|Vijay6~6|Vijay7~7|Vijay8~8|Vijay9~9|Vijay10~10 |Vijay11~11</option1>

</response>

**********optionvalue.html End **********

Note:-
1>Please change ur url as per ur requirement.
2>You can enhance ur code by getting only those rows for which u r selecting values
I mean you can avoid to loop
if(selectedvalue==n)
                                        {
                                        outputstr=oNode.text
                                        break;
                                        }
by making ensure that the row returned by ur optionvalue.html/asp/php/jsp whtever is returning is the ur option value.
Here i used all the combinations so that I donÃ³t have to write the asp code
2>Same techniq u can use with hidden frames :)

Cheers :)

vinod

Cheers :)

vinod

rupen · August 12th, 2005, 08:33 AM

HI Vinod,

After investigating a bit, i found that u r using xml to retrive data,
but how it will be dynamic???
since, http://myurl_ip/vinodR&D/optionvalue.html is html page.
and the url points to server side file?

Pls guide.

Rupen Anjaria.:)
------------------
We CAN'T avoid problems, but can solve it.

vinod_yadav1919 · August 12th, 2005, 09:24 AM

Hi Rupen!!
Thats great Offcourse You can make it asp/jsp/php whtever page.I already have implemented in my company projects
but the format should be like this only.
Or you have to manipulate that code(if it contails javascript,or html tags)
Hope this will help you

Cheers :)

vinod

rupen · August 12th, 2005, 10:26 AM

HI Vinod,
Okay, say i m using ASP to code that url page.
then what to put in <response>...</response>? as it is dependent on the selection of previous combo.
HUUUh m getting confu ....!!
Further i have put these two file on my desktop and tried to execute but nothing comes out!!
value dosn't fill in combobox.

Please....help me.

Rupen Anjaria.:)
------------------
We CAN'T avoid problems, but can solve it.

rupen · August 12th, 2005, 10:51 AM

HI Vinod,

It is working while commenting "if (req.status == 200)".Can u elaborate what this condition is for?

Further,
1) it is just like i have to prefill value with contents in separate file,
and have to call from this code, is it?

2)<option1> has to be 1 always?

3)I have around 5 combobox which are inter linked. what precaution should i take?

I think i m very near to solution. Thanks

Rupen Anjaria.:)
------------------
We CAN'T avoid problems, but can solve it.

vinod_yadav1919 · August 12th, 2005, 11:17 AM

Hii Rupen!!
1)YOu need ur iis or personal web server or apache(for php),tomcat(jsp) or any other web
server,so that your http request can be sent to required (php,asp,jsp..) page.
2)Status=200
plz visit
http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
3))<option1> has to be 1 always? its upto ur requirement.
Can u eleborate ur requirement and set it to my yahooid with same username
4)NO problems if you have 5 combox ,its upto ur reqmnt

Yes you are very close to solution and i do think we can solve it!!

Cheers :)

vinod

vinod_yadav1919 · October 10th, 2005, 09:48 AM

http://p2p.wrox.com/topic.asp?TOPIC_ID=35481

Cheers :)

vinod