Count specific elements

How to?
#1

Hello, I'm trying to find a way to count specific elements or styles. Is it somehow possible?

More details:
Airbnb rooms have a calendar with hatched dates that are not available. I'm trying to count those.
01
In this example result would be 54.

Sitemap:
{"_id":"airbnb-dates","startUrl":["https://www.airbnb.com/rooms/19384771?source_impression_id=p3_1580725523_KJQQmZOWczojPdpc"],"selectors":[{"id":"Disabled-dates","type":"SelectorElement","parentSelectors":["_root"],"selector":"div._1lds9wb:nth-of-type(n+2) ._z39f86g div._1fixpsj","multiple":true,"delay":0}]}

#2

I don't think you can do that with WS alone. Probably need post-processing with Excel or a script.
Also, Airbnb uses random classes like _1fixpsj, so you would need much better selectors. The example below uses Type: Grouped, picks out all unavailable dates and returns them all in one line (JSON format):

{"_id":"airbnb-dates-v2","startUrl":["https://www.airbnb.com/rooms/19384771?source_impression_id=p3_1580725523_KJQQmZOWczojPdpc"],"selectors":[{"id":"unavail-dates single line ","type":"SelectorGroup","parentSelectors":["_root"],"selector":"div[aria-roledescription='datepicker'] div td[aria-label^='Not available']","delay":0,"extractAttribute":"aria-label"}]}

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To pick out the Available dates instead, you can change the selector to:
div[aria-roledescription='datepicker'] div td[aria-label^='Choose']