if you want or want to run an ajax request for a check change event. I think this will help you.
columns: [{ xtype: 'checkcolumn', width: 30, sortable: false, id: 'check1', dataIndex: 'check11', editor: { xtype: 'checkbox', cls: 'x-grid-checkheader-editor' }, listeners: { checkchange: function (column, recordIndex, checked) { Ext.Ajax.request({ url: 'abc.com/index.php', scope: this, params: { postData: postdata }, method: 'POST', success: function (a) { } }); } } ]
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