openlayers 3 - Feature grid not taking data from geoserver layer WMS using geoext 3 -

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this grid.js file included in grid.html. don't know wrong code. have seen examples , tried perform same geoserver layer no output. code after variable store not working. want load file on web , display data in feature grid using geoext 3.0.0. kindly help.

  ext.require([         'ext.container.container',         'ext.panel.panel',         'ext.grid.gridpanel',         'geoext.component.map',         'geoext.data.store.features'     ]);      ext.onready(function () {          var wmslayer = new ol.layer.image({             source: new ol.source.imagewms({                 url: 'http://localhost:8080/geoserver/opengeo/wms',                 params: {'layers': 'opengeo:abc'},                               servertype: 'geoserver'              })         });          var baselayer = new ol.layer.tile({                         source: new ol.source.tilewms({                             url: 'http://ows.terrestris.de/osm-gray/service',                             params: {'layers': 'osm-wms', 'tiled': true}                         })                     });          var view = new ol.view({             center:  ol.proj.fromlonlat([75, 36]),             zoom: 8         });          var map = new ol.map({             layers: [ baselayer, wmslayer ],             target: 'map',             view: view         });            var store = ext.create("geoext.data.store", {                 url: 'http://localhost:8080/geoserver/wms',                 params: {'layers': 'opengeo:abc'},                   autoload: true         });          grid1 = ext.create('ext.grid.panel', {                 title: 'main cities',                 border: true,                 region: 'east',                 store: store,                 columns: [                      {text: 'cityname', dataindex: 'name'}                 ],                 width: 300              });              var mapcomponent = ext.create('geoext.component.map', {                 map: olmap             });             var mappanel = ext.create('ext.panel.panel', {                 region: 'center',                 height: 400,                 layout: 'fit',                 items: [mapcomponent]             });              var description = ext.create('ext.panel.panel', {                 contentel: 'description',                 region: 'south',                 title: 'description',                 height: 180,                 border: false,                 bodypadding: 5,                 autoscroll: true             });              ext.create('ext.viewport', {                 layout: 'border',                 items: [mappanel, grid1, description]             });         });

in first lines require geoext.data.store.features try instantiate package geoext.data.store later. try this:

var store = ext.create("geoext.data.store.features", {   url: 'http://localhost:8080/geoserver/wms',   params: {'layers': 'opengeo:abc'},     autoload: true });

also, try hand on variable olmap geoext map component. named map lines above. try:

var mapcomponent = ext.create('geoext.component.map', {   map: map });

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