3. Chrome developer browser console
4. Firefox developer browser console
5. Browser console errors
They can be opened with F12 for most browsers on Windows. As we’ve seen so far, we can run JS in the console completely independent of the page we have opened in the browser. But what makes the console particularly useful is its ability to display live information about what’s happening on a web page as it’s running
To do this, we use the console.log function, which takes any number of arguments that you pass to it.
We can also log multiple values by separating them with commas: