What is the simplest way to find a slack team ID and a channel ID?

Question

We are trying to setup deep linking into slack, as described here:

https://api.slack.com/docs/deep-linking

The document states that to open a specific team,

Answer 1

As of July 2019, it seems like the team id and the channel id is already being shown via the web.

As you can see in the screenshot, the 2nd to the last node is the team id (prefixed with "T") and the last node is the channel id (prefixed with "C"). All you have to do is open slack via the web, go to the specific channel, and you can see the url change to something close to the screenshot above.