/localStorage-one-page-app

Primary LanguageJavaScript

Working with localStorage

Introduction

  • Stores key/value pairs locally within the client web browser
  • Key/value keys persists after the browser is refreshed/closed/navigated away from
  • Data doesn’t need to be transmitted to the remote web browser
  • Compatible across all major web browsers
  • Can be used to remember login usernames
  • Can be used to create local save-states
  • Ideal for saving and storing non-essential data in the client side

localStorage setItem method

localStorage.setItem("key", "value")
  • Takes two arguements (both in strings).
  • This method creates a key/value pair in localStorage.
  • The first argument is the key, and the second argument is the value.

localStorage getItem method

localStorage.getItem("key")
  • Takes in the key of a stored key/value pair.
  • This method calls the value of a key that is already stored

localStorage removeItem method

localStorage.removeItem("key")
  • Takes in the key of a stored key/value pair.
  • This method calls the associated key-value pair, and removes it from localStorage.

Things to consider

  • localStorage methods only take strings as it's arguments
  • The maximum amount of data stored cannot exceed 5 mb
  • Not a replacement total replacement for back-end databases

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