<script type="text/javascript" src="../grid/calendar/calendar-cn-utf8.js"></script> {id: 'bill2005' , header: "2005" , width :60, inChart :true, chartColor : 'eecc99 ...

Checkbox.ua have OpenAPI specification (https://api.checkbox.in.ua/api/openapi.json) that is incorrectly described in many places. For example, lack of nullable union ...