TalentJR apps
Apps keep data. A variable is a named box for one value, like lives = 3. A list holds many values in order, like a list of notes; its positions start at 0, push adds an item at the end and pop takes the last one off. Data can be saved on the phone — private, fast and working offline, but lost with the phone — or in the cloud, where it can be shared and reached from any device but needs the internet.
✓ You passed this lesson’s test.
Box, list, place — “a variable holds one value, a list holds many, and data is saved on the phone or in the cloud”
Use it for: Deciding what your app must remember and where to keep it.
Check: notes.length is 5, and notes[0] is Hindi ✓
▶ Watch it animatedWork it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 💾 Data Keeper badge when you pass — and a certificate when you finish all 8 lessons of Part 2 · Designing Apps. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
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