beforeClose
fires before closing the timepicker
beforeClose: (value: string | object) => boolean | void;
Parameters:
value: string | object- the current value of a timepicker
Returns:
Return false to prevent closing the timepicker; otherwise, true.
Example
timepicker.events.on("beforeClose", function(value){
    console.log(value);
    return false;
})
Related sample: Timepicker. Events
The type of the value parameter depends on the applied valueFormat and timeFormat:
- If 
valueFormat: "string"andtimeFormat:24are specified, the string value will include just the hour and minutes: "00:39" - If 
valueFormat: "string"andtimeFormat:12are specified, the string value will include hour, minutes, and am/pm identifiers: "06:00AM" - If 
valueFormat: "timeObject"andtimeFormat:24are specified, the object value will containkey:valuepairs for hours, minutes and their values:{hour: 0, minute: 39} - If 
valueFormat: "timeObject"andtimeFormat:12are specified, the object value will containkey:valuepairs for hours, minutes, am/pm identifiers and their values:{hour: 6, minute: 0, AM: true} 
Change log:
- The value parameter was added in v7.0
 - The event was added in v6.4