function renderDate(value) { return Ext.util.Format.date(value, 'F d, Y g:i A'); }
this.testsGrid = new Ext.grid.GridPanel({ id: 'testsGrid', region: 'center', deferRowRender: true, store: this.testsStore, loadMask: true, viewConfig: { forceFit: true }, autoWidth: true, columns: [ { id: 'LogId', header: 'Log ID', sortable: true, dataIndex: 'LogId' }, {id: 'ShortName', header: 'Short Name', sortable: true, dataIndex: 'ShortName' }, { id: 'LogInDate', header: 'Log Date', sortable: true, dataIndex: 'LogInDate', renderer: renderDate } ], stripeRows: true, autoScroll: true, border: false });

Above code will show correct date format on Chrome but will only display NaN on IE. Can somebody help me? Thanks...