This example sets up dependencies between grid columns by using rowTemplate option.
rowTemplate is better than js formulas in following ways:
getters and setters feature of javascript
and so is more robust and has better performance.
In this use case, values in a column are dependent upon corresponding row values in one or more columns.
Result of rowTemplate getters are treated as normal data of the grid and so they work seamlessly with
sorting, filtering, grouping, treegrid, etc.
Array data can also be used instead of JSON data.
In this example,