JavaScript = Muscles

Motion and response

1. Definition

   Behavior that reacts to users and updates the page.

2. Diagram

   Click → handler → DOM update.

3. Animation

   Pulse on interaction path.

4. Example

   Open the visual guide example.

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5. Interactive playground

   Practice in the classroom playground.

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6. Quiz

   Check understanding on the public guide or interview hub.

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7. Lesson

   Start the full interactive lesson.

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