Save and read — practice exercise

What you'll be asked to do

1. 1.Save and readexercise · easy · 10 min

   Save a step number and read it back.

   Passes when: #out should show 2.

2. 2.Store form progressexercise · easy · 10 min · practice plan

   Save an object as JSON for a form step.

   Passes when: #out should show Ada.

3. 3.Remove a session valueexercise · easy · 10 min · practice plan

   Set and then remove a key, and report it is gone.

   Passes when: #out should show gone.

4. 4.Store a count as textexercise · easy · 10 min · practice plan

   Show that a stored number comes back as a string.

   Passes when: #out should show string.

5. 5.Use both storages togetherexercise · medium · 10 min · practice plan

   Save one value in each and read both back.

   Passes when: #out should show dark and 3.

6. 6.Fix localStorage used for temporary databug fix · easy · 8 min

   Data that should not outlive the tab belongs in sessionStorage, not localStorage.

   Passes when: #out should show found it.

7. 7.Fix the object saved without stringifybug fix · easy · 8 min · practice plan

   Without JSON.stringify the object becomes useless text.

   Passes when: #out should show Ada.

8. 8.Fix the stored count added like a numberbug fix · easy · 8 min · practice plan

   The stored value is text, so plus joins instead of adding.

   Passes when: #out should show 10.

9. 9.Fix the wrong storage read backbug fix · easy · 8 min · practice plan

   The value was saved in one storage and read from the other.

   Passes when: #out should show found it.

10. 10.Fix removeItem given the wrong keybug fix · easy · 8 min · practice plan

    The key passed to removeItem must match exactly.

    Passes when: #out should show gone.

Between them these tasks cover sessionStorage, Per-tab scope and Same API.

Looking for a different chapter? See every practice set, or switch to the interview theory questions.