My97DatePicker control time modification

My97DatePicker control time modification which is familiar with My97DatePicker?
When I click the second in time, the numbers in the red circle are 0, 10, 20, 30, 40, 50, respectively.
Now I want to set the interval to 30 and only display 0, 30. which file should I modify?

Reply to discussion (solution)

WdatePicker. js
HmsMenuCfg: {H: [], m: [], s: []},
Your original location should be

{H: [] indicates an interval of 1 hour. each row contains 6
Other similar

WdatePicker. js
HmsMenuCfg: {H: [], m: [], s: []},
Your original location should be

{H: [] indicates an interval of 1 hour. each row contains 6
Other similar
The version I used is My97 DatePicker 4.72 Release. the code you mentioned is not found.

Change the version. after all, he is constantly updating it.

Look at wdatepicker, js