There are five core concepts in Vuex that we will guide you through in this section. They are state, getters, mutations, actions, and modules. We will start by looking into the state concept first in the following section.
The state
The state is the heart of a Vuex store. It is the source of the "global" data that we can manage and maintain in a structured and predictable way in Vuex. A state in Vuex is a single state tree–a single JavaScript object that contains all the app state data. So, you will usually have one store per app. Let's take a look at how we can get the state into components in the following sections.
Accessing the state
As we mentioned in the previous section, Vuex stores are reactive, but if we want to access the reactive value in the view, we should use the computed property instead of the data method, as follows:
// vuex-sfc/state/basic/src/app.vue
<p>{{ number }}</p>
import Vue from 'vue/dist/vue...
