ExtJS date filter fix for Internet Explorer (IE8)

extjs-date-override.js

var originalFormat = Ext.util.Format.date;
  Ext.override(Ext.util.Format, {
    date: function(v, format) {
        if (Ext.isIE && !Ext.isDate(v)) {
            if (v && v.indexOf('T')>-1) {
                // assume ISO format
                v = Ext.Date.parse(v, 'Y-m-dTH:i:s.u');
            }
        }
        return originalFormat(v, format);
    }
});