Learn Javascript with Reeborg!

Learning Javascript is easy with Reeborg. All you have to do is read the tutorial and try all the examples in Reeborg’s world. I suggest that you keep the tutorial and Reeborg’s World both open but in separate windows or tabs.

Before you actually start the tutorial, have Reeborg take its first step by running a program in Reeborg’s World.

Hints are clickable and designed to provide useful pointers if you are not sure how to proceed.

Hint

Go to Reeborg’s world, click on the “run” button (small white triangle on blue background) and watch Reeborg takes its first step. You can also view this short video to see what it looks like. You may want to watch it in full screen with HD quality selected.

Contents:

• 1. First program
  • 1.1. Dealing with eRRoRs
  • 1.2. Rule #1
• 2. Test driven learning
  • 2.1. Making a left turn
  • 2.2. A different view
• 3. Darn bugs!
  • 3.1. What is a bug?
  • 3.2. Dealing with bugs
• 4. Reeborg goes to France
  • 4.1. Valid names
• 5. A token of appreciation
  • 5.1. Being more specific
• 6. Rule number 2
  • 6.1. Comments
• 7. Summary
• 8. Introduction to the challenges
  • 8.1. Important information about saving your work
  • 8.2. Finding the center
  • 8.3. Around the world
  • 8.4. Lost in a maze
  • 8.5. Jumping over hurdles
  • 8.6. Harvest time
  • 8.7. Stormy weather
  • 8.8. Summary
• 9. Newspaper delivery
• 10. Rule number 3
  • 10.1. Three lefts can make a right
  • 10.2. Defining functions
  • 10.3. How to think about function
• 11. Turn around
  • 11.1. Back to turn_right()
• 12. Using the Library
  • 12.1. Reading exercise
• 13. Newspaper delivery revisited
• 14. Repeat
• 15. If only ...
  • 15.1. Javascript keyword: if
  • 15.2. if statement
  • 15.3. How to think of if statements
  • 15.4. More useful that you might think...
• 16. Finding the right spot
  • 16.1. Another condition
  • 16.2. And now, something different
  • 16.3. Hurdles again!
• 17. Listen to me ... or else ....
  • 17.1. Two choices...
  • 17.2. How to think about if/else
• 18. Hurdles yet again!
  • 18.1. How to think of if/else if/ ... /else statements
  • 18.2. Back to hurdles
• 19. Not ... true!
  • 19.1. Time to be negative.
  • 19.2. Please, make Reeborg happy
• 20. For a while
  • 20.1. How to think about while
  • 20.2. Back to hurdles!
• 21. Newspaper delivery revisited again
• 22. Refinements: part 1
  • 22.1. A simple problem
• 23. Refinements: part 2
  • 23.1. Not so simple world
• 24. Refinements: part 3
  • 24.1. More complicated world
• 25. Refinements: part 4
• 26. Refinements: part 5
• 27. Rule number 4
  • 27.1. Conclusion
• 28. Surprises
• 29. Revisiting some challenges
  • 29.1. Before harvesting
  • 29.2. Ready to harvest
  • 29.3. Stormy weather
  • 29.4. Reeborg’s friend’s turn.
  • 29.5. After the storm
  • 29.6. More yard work!
  • 29.7. Finding the center
• 30. Recursion
• 31. Tricky recursion
  • 31.1. Small change...
• 32. More recursion
  • 32.1. Another test
• 33. Counting on recursion
• 34. Return
  • 34.1. Getting results from functions
  • 34.2. How to think about return
• 35. More harvesting challenges
• 36. Reeborg’s diary
  • 36.1. Writing text
  • 36.2. Reeborg knows mathematics
  • 36.3. Using variables
  • 36.4. A word of caution
• 37. Increment
  • 37.1. Counting steps
• 38. While counting
  • 38.1. Defining repeat()?
  • 38.2. Scope
• 39. For loops
  • 39.1. Reeborg’s repeat()
• 40. A better repeat()
  • 40.1. Extending this idea
• 41. An other way to repeat
  • 41.1. Having a default behaviour
• 42. Conclusion