google maps - Cannot read property 'Query' of undefined -


in code snippet `

1) function gvizselect(tableid) { 2)  var uri = "select geometry " + tableid + " name = 10095"; 3)  var querytext = "http://www.google.com/fusiontables/gvizdata?tq=" + encodeuricomponent(uri); 4)  var query = new google.visualization.query(querytext); 5)  query.send(getdata); 6) }

`

i have confirmed querytext url produce proper response set when browsed directly; line 4 generating following error; "uncaught typeerror: cannot read property 'query' of undefined."

here complete html file demonstrates error receiving

<!doctype html>   <html>   <head>   <meta http-equiv="content-type" content="text/html; charset=utf-8" />   <title>indianatrails.com</title>   <script type="text/javascript" src="http://www.google.com/jsapi"></script>   <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>   <script type=text/javascript>     google.load('visualization', '1',              {               'packages':['corechart', 'table', 'geomap']             }     );     var tableid = '1zxsfevzwvm_pute8q5thfwmyr0ncgqzbsdcvqds';     var uri = "select geometry " + tableid + " name = 10095";     var querytext = "http://www.google.com/fusiontables/gvizdata?tq=" + encodeuricomponent(uri);     var query = new google.visualization.query(querytext);     query.send(getdata);   </script>   <body>   <h1>test</h1>   </body> </html>

i @ loss (after several days reading documentation , examples) figure out why not working. appreciated!

if using google.load(), need wait until script loaded before using it. can set call function (google.setonloadcallback).

  <script type=text/javascript>     // set callback run when google visualization api loaded.     google.setonloadcallback(runquery);     google.load('visualization', '1',              {               'packages':['corechart', 'table', 'geomap']             }     ); function runquery() {     var tableid = '1zxsfevzwvm_pute8q5thfwmyr0ncgqzbsdcvqds';     var uri = "select geometry " + tableid + " name = 10095";     var querytext = "http://www.google.com/fusiontables/gvizdata?tq=" + encodeuricomponent(uri);     var query = new google.visualization.query(querytext);     query.send(getdata); }   </script>

of course error getdata not defined (because isn't)


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