Download of all graphana dashboards in JSON?

Good evening everyone!

As you can understand from the title, I need your precious help to understand how to download all the Grafana dashboards and obviously all the panels inside it with just one click or command. Is there a Plug-In or a tool capable of doing such a thing? I also tried with this Plug-In (https://grafana.com/grafana/dashboards/5837) but it didn’t work.

P.S.
I am new, so please excuse me if something is missing from my question.

Can anyone help me out? Thanks!

That dashboard needs enabled javascript and it is based on the Grafana API. So you can create own script in your favorite language, which willnuse that API https://grafana.com/docs/grafana/latest/http_api/

I thank you for your answer.
But as I said before being new I don’t know-how.
Could you explain it to me?