0Pricing
JavaScript Academy · Lesson

Storing and Reading Data

Use setItem, getItem, and removeItem.

Browser Key-Value Storage

Web Storage gives each origin a simple key-value store in the browser. The two APIs, localStorage and sessionStorage, share the same methods and store only strings.

Writing With setItem

Save a value with setItem(key, value). Both arguments are strings.

localStorage.setItem("theme", "dark");
localStorage.setItem("username", "ada");

All lessons in this course

  1. Storing and Reading Data
  2. localStorage vs sessionStorage
  3. Storing Objects with JSON
  4. Storage Events and Limits
← Back to JavaScript Academy