How can I access the Google Chrome browser API through the console?

Question

JavaScript

In general, I'm trying to somehow feel the JavaScript APIs for Google Chrome, the documentation of which is here: tyts
For example, there is chrome.alarms , but when I just want to get this object in the console (DevTools which) I get undefined , probably because this console does not have access to this API. How then to be?
Tell me please. Thank you!
I tried to touch api from the extension. Quickly sketched an extension, did this:

What am I doing wrong?

Answer 1

As far as I know, only extensions have access to the browser api. And only to those apis that are specified in the manifest. The console operates on the page environment.

Answer 2

Content scripts have some limitations. They cannot:
Use chrome.* APIs, with the exception of:
- extension ( getURL , inIncognitoContext , lastError , onRequest , sendRequest )
- i18n
- runtime ( connect , getManifest , getURL , id , onConnect , onMessage , sendMessage )
- storage
( https ://developer.chrome.com/extensions/content_scripts )
Move the code to the background script.