php - Get response <select> and show it in form <select> -


i have form in have list of indian states , cities. on selecting 1 of states, cities state displayed in <select> show cities. using php script hosted somewhere (a similar website) , think can solve purpose. script takes value of state options parameter , returns <select> corresponding cities.

the script http://www.indane.co.in/state.php?stateid=2196 2196 id/value of selected state.

i need display contents of in cities' .

please suggest me how can this.

so far have tried this,

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>untitled document</title> <script language="javascript"> function showcat(id,ss,type) {     var cid=id.value;     if(type=='state')     {         document.getelementbyid("state_loading").style.visibility="visible";         var response = httpget("http://www.indane.co.in/state.php?stateid="+cid);         var id=document.getelementbyid('bgcity');         id.innerhtml=response;     } } function httpget(theurl)     {     var xhrobject = new xmlhttprequest(); var url = theurl; xhrobject.open("get", url, true); xhrobject.send(); xhrobject.onreadystatechange = function () { if (xhrobject.readystate==4 && xhrobject.status==200) {     var response = xhrobject.responsetext;                    return response;     } }     } </script> </head>  <body> <select name="bgstate" id="bgstate" style="width:200px" onchange="showcat(this,'sub1','state');">                   <option value="">[ select state ]</option>                                           <option value="2169" >andhra pradesh</option>                                           <option value="2196" >arunachal pradesh</option>                                           <option value="2170" >assam</option>                                           <option value="2171" >bihar</option>                                           <option value="5267" >chhattisgarh</option>                                           <option value="2174" >delhi</option>                                           <option value="2199" >goa</option>                                           <option value="2175" >gujarat</option>                                           <option value="2176" >haryana</option>                                           <option value="2177" >himachal pradesh</option>                                           <option value="2178" >jammu , kashmir</option>                                           <option value="5268" >jharkhand</option>                                           <option value="2185" >karnataka</option>                                           <option value="2179" >kerala</option>                                           <option value="2181" >madhya pradesh</option>                                           <option value="2182" >maharashtra</option>                                           <option value="2183" >manipur</option>                                           <option value="2184" >meghalaya</option>                                           <option value="2197" >mizoram</option>                                           <option value="2186" >nagaland</option>                                           <option value="2187" >orissa</option>                                           <option value="2189" >punjab</option>                                           <option value="2190" >rajasthan</option>                                           <option value="2195" >sikkim</option>                                           <option value="2191" >tamil nadu</option>                                           <option value="2192" >tripura</option>                                           <option value="5269" >union territory</option>                                           <option value="2193" >uttar pradesh</option>                                           <option value="5259" >uttaranchal</option>                                           <option value="2194" >west bengal</option>                      </select>                                <span id="state_loading" style="visibility:hidden;"><img src="http://www.indane.co.in/images/ajax_small_load.gif" /></span>                      </td>             </tr>              <br/>             <tr valign="top">               <td>&nbsp;</td>               <td height="25" >city <span class="error">*</span></td>               <td colspan="2">               <span id="sub1">               <select name="bgcity" style="width:200px" id="bgcity" >                  <option value="">[select city]</option>                 </select>                  </span>                  <span id="city_loading" style="visibility:hidden;"><img src="http://www.indane.co.in/images/ajax_small_load.gif" /></span>                           <input type="button" value="search"  onclick="showcat(document.getelementbyid('bgcity'),'sub2','city');" style="cursor:pointer;" />              </tr>     </body> </html>

problem 1-the problem url city dropdown returning selectbox , replacing options of selectbox in page selectbox

another problem access-control-allow-origin header.

replace city drop down in page following

       <span id="bgcity">       <select name="bgcity" style="width:200px" >          <option value="">[select city]</option>         </select>          </span>

change showcat as

function showcat(id,ss,type) {    var cid=id.value;    if(type=='state')    {         document.getelementbyid("state_loading").style.visibility="visible";         var response = httpget("http://www.indane.co.in/state.php?stateid="+cid);          if(response !== undefined)         {            var id=document.getelementbyid('bgcity');            id.innerhtml=response;         }     } }

i have removed id associated select box span replaces whole drop down..and remove second parameter in showcat function change give error...


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