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// action from one moduleA to moduleB dispatch('moduleB/actionName', parameters, { root:true }) //Then it look for the action name and execute the command

Due to using a single state tree, all states of our application are contained inside one big object. However, as our application grows in scale, the store can get really bloated. To help with that, Vuex allows us to divide our store into modules. Each module can contain its own state, mutations, actions, getters, and even nested modules - it's fractal all the way down: const moduleA = { state: (..

Actions are similar to mutations, the differences being that: Instead of mutating the state, actions commit mutations. Actions can contain arbitrary asynchronous operations. Let's register a simple action: const store = createStore({ state: { count: 0 }, mutations: { increment (state) { state.count++ } }, actions: { increment (context) { context.commit('increment') } } }) Action handlers receive..

The only way to actually change state in a Vuex store is by committing a mutation. Vuex mutations are very similar to events: each mutation has a string type and a handler. The handler function is where we perform actual state modifications, and it will receive the state as the first argument: const store = createStore({ state: { count: 1 }, mutations: { increment (state) { // mutate state state..

Sometimes we may need to compute derived state based on store state, for example filtering through a list of items and counting them: computed: { doneTodosCount () { return this.$store.state.todos.filter(todo => todo.done).length } } If more than one component needs to make use of this, we have to either duplicate the function, or extract it into a shared helper and import it in multiple places ..

Where there is multiple state inside our component state, we use them. export default { data() { return { } }, computed: mapState({ students: state => state.students }), async created() { } }; When a component needs to make use of multiple store state properties or getters, declaring all these computed properties can get repetitive and verbose. To deal with this we can make use of the mapState h..

State# Single State Tree# Try this lesson on Scrimba Vuex uses a single state tree - that is, this single object contains all your application level state and serves as the "single source of truth." This also means usually you will have only one store for each application. A single state tree makes it straightforward to locate a specific piece of state, and allows us to easily take snapshots of ..

Vuex is a state management pattern + library for Vue.js applications. It serves as a centralized store for all the components in an application, with rules ensuring that the state can only be mutated in a predictable fashion. What is a "State Management Pattern"?# Let's start with a simple Vue counter app: const Counter = { // state data () { return { count: 0 } }, // view template: ` {{ count }..