JavaScript Builder Lab · Lesson 10 of 12

Storing Simple State in Local Storage

Keep small browser-side settings or lists so work can survive a refresh in safe simple cases.

Academy Plus 3 practice exercises 1 homework item

What you will learn

  • Explain localStorage as browser-side storage for small text values.
  • Describe state as the current value a small interface remembers.
  • Save and load a simple value with setItem and getItem.
  • Use JSON.stringify and JSON.parse for tiny structured values.
  • Avoid storing sensitive information in localStorage.

Lesson shape

21 minute lesson with 7 sections, 3 exercises, 4 checkpoint questions, and 1 homework submission.

This track requires the Academy Plus plan.

Lesson outline

What this lesson includes

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Overview

State is what the page remembers right now

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Explain

localStorage stores text by key

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example

Load saved state back into the page

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Practice

Structured values need JSON

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Practice

Safe beginner use cases

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Practice

Common localStorage mistakes

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Wrap up

Saved state adds one more moving part

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Homework

Assignments attached to this lesson

Text response

Storing Simple State in Local Storage: quick check

Write a short beginner explanation of the main idea from Storing Simple State in Local Storage.

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