State Management in Alpine.js using Spruce

State Management in Alpine.js using Spruce

Learn about state management, how to apply it in Alpine.js using Spruce, and how to access and modify a store’s state.

Learn about state management, how to apply it in Alpine.js using Spruce, and how to access and modify a store’s state.

If you’ve used JavaScript frameworks such as React and Vue.js, then you may already be familiar with the concept of state management, which creates a way to communicate and share data across components.

Ideally, users require state management when their application has two or more components that should communicate and share data without having to declare the data in the scope of each component and manually pass them across. Typically, users have some kind of store, which serves as a single source of truth for an application state/data.

Enter Alpine.js, a relatively new JavaScript framework that borrows concepts from React and Vue.js and also has its own implementation of state management through a library called Spruce. Spruce is a lightweight state management library for Alpine.js, and, just like Alpine.js, Spruce is simple and has a small footprint.

What we’re building

In this article, we’ll build a simple to-do application that comprises two components: an input for adding new to-dos and a table displaying the list of to-dos. This will give us the opportunity to access state from a global store inside the two independent components.

Getting started with Spruce

To get started, let’s create a new project directory, which we’ll call alpine-spruce-todo:

mkdir alpine-spruce-todo

Next, create an index.html file inside the project directory.

cd alpine-spruce-todo
touch index.html

Just like Alpine.js, Spruce can be installed either from a CDN or using npm or Yarn. In this tutorial, we’ll use a CDN. Add the following code inside index.html:

<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">

      href="[email protected]/css/bulma.min.css"

    <script src="[email protected]/dist/spruce.umd.js"></script>
    <script src="[email protected]/dist/alpine.min.js"></script>
    <section class="section">
      <div class="container">
        <div class="columns">
          <div class="column is-three-fifths is-offset-one-fifth">

Because we are using a CDN, we need to pull in Spruce before Alpine.js. For styling, let’s use Bulma CSS, which we’ll also pull in from a CDN.

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