_docs-v4/intro/dynamic-options.md
You can get/set calendar options after a calendar has already been initialized.
You can query for the current value of a calendar option:
calendar.getOption('locale');
This will only return options that are global to the calendar. This method will not return View-Specific Options.
It is possible to dynamically set options after initalization. These option modifications will be applied to all views. It is not currently possible to set View-Specific Options in this manner.
Can you dynamically set a single option:
calendar.setOption('locale', 'fr');
Some options need to be manipulated through methods:
Event Sources should be dynamically manipulated through methods like addEventSource and remove. Thusly, dynamic setting of the following options is not applicable:
Some options affect processing of event data. Dynamically setting them will not change current event data, but will take effect for future event fetches:
Dynamic setting of some options is simply not yet implemented: