How to make an input box enable for only past dates and for the startdate if it falls in the current

How to make an input box enable for only past dates and for the startdate that if it falls in the current month in JavaScript.

The input box should be disabled for the future dates and for the startdate if it falls in the current month and the current year.

I have implemented the function but not sure the following logic will work for every scenario.

How to make an input box enable for only past dates and for the startdate if it falls in the current WordPress ...