A structured lesson workspace with readable content, hands-on examples, and a clean path to completion.
| Observation | Diagnostic question |
|---|---|
| Runtime value | What value actually arrived? |
| Language rule | Which rule determines the result? |
for (let i = 0; i < 3; i += 1) {console.log(`attempt-${i + 1}`);}
Keep the experiment focused on for loops and loop control and change one assumption at a time.
This example demonstrates for loops and loop control directly. Change one input at a time and observe the result; the goal is to connect the syntax to the runtime behavior rather than treating the snippet as a recipe.
Finish the lesson once you have worked through the material. This awards ★ 20 XP.