gistfile1.txt

Ext.onReady(function(){
  var ds = new Ext.data.Store({
     proxy: new Ext.data.ScriptTagProxy({ 
      url: "https://api.meetup.com/topics.json/?key=14105b6310651261633e2e1715346562"
      }),
     baseParams:{"search":"Javascript"},
     reader: new Ext.data.JsonReader({
       root: 'results'
     },
      ['id', 'name', 'link']
     )
   });

   var grid = new Ext.grid.GridPanel({
     store: ds, 
     columns: [
        {head: "id", width:20, dataIndex:'id'}, 
        {head: "name", width:100, dataIndex:'name'}, 
        {head: "link", width:200, dataIndex:'link'} 
       ],
     applyTo: Ext.getBody(),
     title: 'meetup topics',
     height: 700,
     autoScroll: true,

     });

   ds.load();
});