Drag the background!

Step 5. Errors & Console

This code contains a deliberate error that is currently rendered inactive by making it a "comment".

Remove the comment marker to make it active code. Then see how the Ancient Brain editor flags it (but allows you to save it) and it is also flagged in the console when you run. To access the console press something like Ctrl-Shift-J (or Command-Option-J or F12, depending on your browser).

World

Tutorial 1.5
Errors & Console
The background is a program, showing the JavaScript graphics used on this site.
The globes light up when you log in.
 
Font:

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Call for partners!
Ancient Brain is looking for a partner to co-write a JavaScript or Python coding book for schools, to be used worldwide. This would be a course for students in learning to code from scratch. The book and course will be integrated into the Ancient Brain site. This is an opportunity for someone looking to develop a course and textbook to partner with a site to promote it. Read more.