topical media & game development
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professional-ria-03-GeoCodeProxy.htm / htm



  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  <html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml">
    <head>
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     
      <title>Yahoo! Geocoder</title>
      <link rel=StyleSheet href="../../stylesheets/RIAStyle1.css" TYPE="text/css">
      <script src="../../scripts/createXMLHttpRequest.js" type="text/javascript"></script>
      <script "text/javascript">
      //<![CDATA[> 
      // global vars
      var __xmlhttp = false;
      var __lat = null;
      var __lon = null;
      var __appid = "YahooDemo";
       //]]>
      </script>
  
      <script type="text/javascript">
      //<![CDATA[   
  
          function callWS(target){
              if(target !== ""){
                      if (!xmlhttp) {xmlhttp = createXMLHttpRequest();}
                                  alert("callWS: target: "+target);
                  var url = '../../phpscripts/geocoder.php?' + target;
                  xmlhttp.open('GET', url, true);
                  xmlhttp.onreadystatechange = function() {
                        alert("callWS: onreadystatechange: "+xmlhttp.readyState );
                    if(xmlhttp.readyState == 4 && xmlhttp.status == 200) {
                      document.getElementById('Result').innerHTML = ''; 
                      document.getElementById('State').innerHTML = 'Done.';
                      alert("xmlhttp.responseText:" + xmlhttp.responseText); 
                      getLatLon(xmlhttp.responseText);
                    } else {
                      document.getElementById('State').innerHTML = "Working...";
                    }
                  }; 
                  alert("callWS: sending: "+xmlhttp);
                  xmlhttp.send(null);
                }
          }            
      function getLatLon(result){
      var start = (result.search(/<Latitude>/) +10 );
          var end = result.search(/<\/Latitude>/);
          var lat = result.substr(start, (end -start) );
  
          start = (result.search(/<Longitude>/) +11 );
          end = result.search(/<\/Longitude>/);
          var lon = result.substr(start, (end -start) );
                             
          document.getElementById("Latitude").innerHTML = lat;
          document.getElementById("Longitude").innerHTML = lon;
          document.getElementById("State").innerHTML = ""; 
          xmlhttp = false;
      }  
      
      function onLoad() {  
             
      }
      function callGeocode() {
        var query = document.getElementById("geoquery").value;
        var uri = "http://api.local.yahoo.com/MapsService/V1/geocode?appid="+__appid+"&output=xml&location=" + query;
        callWS(uri);
      }
      //]]>
      </script>
  
    </head>
  
    <body onload="onLoad()">
      <div id="header">
      <h1>Simple Geocoding Example </h1>
      <h2>Input a loose location description, and Yahoo's Geocoding service returns a Latitude / Longitude pair</h2>
  
      </div> 
      <br /> 
      <div class="inputelement"><button onClick="callGeocode()">GEOCODE LOCATION</button>&nbsp;
  
          <input id="geoquery" value="1300 N. 17th St, Arlington VA" size="50"></input>
      </div>
      <br />
  
      <div id="State"></div>
      <div id="Result"></div>
      <p>Latitude: <span id="Latitude" style="font-weight:bold"></span> </p>
      <p>Longitude: <span id="Longitude" style="font-weight:bold"></span> </p>   
    </body>
  
  </html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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