SMART datagrid v.1 > Classes > GridColumn
It is the reference value in dynamic style of DataColumn.
The developer can specify as a random value related to this column.
Defaults to undefined.
var tag = 'changed';
var column = grid.columnByTag(tag);
// You can specify the same tag in multiple columns.
var columns = grid.columnsByTag(tag);
// It is used in dynamic style.
column.setDynamicStyles([{
expression: "tag = 'change'",
background: "#ffff00"
}]);