Scala.js LocalStorage - Javascript

LocalStorage is a form of web storage that allows web applications to store and access data in the browser. It provides a way to store key-value pairs in a client-side, persistent store. This means that data stored in LocalStorage is available even after the browser is closed and reopened.

Scala.js LocalStorage is a library that provides a Scala.js implementation of the Web Storage API, that is, it provides a way to interact with LocalStorage from within a Scala.js application.

Getting Started

To get started with Scala.js LocalStorage, first you need to add it to your dependencies in build.sbt:

libraryDependencies += "org.scala-js" %%% "scalajs-dom" % "1.1.0",
libraryDependencies += "com.github.japgolly.scalajs-react" %%% "core" % "1.7.7",
libraryDependencies += "be.doeraene" %%% "scalajs-jquery" % "0.9.6",
libraryDependencies += "com.github.outr" %%% "salvatr-storage" % "1.0.0"

Then you need to create a LocalStorage object:

import be.doeraene.sjs.storage._

val localStorage = LocalStorage("myapp.")

The LocalStorage object allows you to read and write data to LocalStorage. It can store data as a variety of types, including strings, numbers, booleans, and objects.

Storing Data

To store data in LocalStorage, you can use the setItem method:

localStorage.setItem("username", "johndoe")

This stores the key-value pair "username": "johndoe" in LocalStorage.

Retrieving Data

To retrieve data from LocalStorage, use the getItem method:

val username = localStorage.getItem("username")

This retrieves the value associated with the key "username" from LocalStorage.

Removing Data

To remove data from LocalStorage, you can use the removeItem method:

localStorage.removeItem("username")

This removes the key-value pair associated with the key "username" from LocalStorage.

Clearing Data

To clear all data from LocalStorage, use the clear method:

localStorage.clear()

This removes all key-value pairs from LocalStorage.

Conclusion

Scala.js LocalStorage provides a powerful and simple way to store data in the browser. With its easy-to-use API and flexible storage options, LocalStorage is an essential tool for building responsive, scalable web applications.