How can I use dayViewHeaderFormat property?

[cjy23405]

I would like to know the usage of the dayViewHeaderFormat property.

I want the header to look like yyyy.MM

How can I use it to change the format?

[Eonasdan]

Unfortunately, I don't think this is currently supported. That text is formatted using the Intl formatter. Where this is getting set is not a very easy place for you to override either. I'll look to see how this can be improved.

You could try settings this to { year: 'numeric', month: 'long' } and make sure the locale is set