SMART datagrid v.1 > Classes > ColumnFilter
Only if specify this value as true, this filter will be applied to the column.
When setting the filter for the first time or adding the filter in the column of running, if specify this property value as true, it will be applied immediately. Later, you can apply or remove the filter by calling DataColumn.activateFilters or toggleFilters.
In addition, you can apply or remove the filter by changing this property value directly.
Defaults to false.
$('#toggleFilter').click(function () {
var col = grid.columnByName('colUnit');
var filter = col.getFilter('filter01');
filter.setActive(!filter.active());
});