How To Watch Store Values From Vuex

If you're looking to level up your Vue.js skills and dive deeper into managing state in your applications, understanding how to watch and store values from Vuex is essential. Vuex is a state management pattern and library specifically designed for Vue.js applications, giving you a centralized store to manage all the state of your app in a predictable and organized way.

To get started with watching and storing values from Vuex, you'll first need to have Vuex set up in your project. Vuex works by creating a central store that holds your application's state, mutations to change the state, actions to commit mutations, and getters to access the state.

To watch a value in Vuex, you can use computed properties. Computed properties in Vue.js are functions that compute and return dynamic data based on other reactive data in the Vuex store. This allows you to reactively update your component whenever the watched value changes in the Vuex store.

Here's an example of how you can watch and store values from Vuex in your Vue.js component:

<div>
    <p>Current Count: {{ count }}</p>
    <button>Increment Count</button>
  </div>



import { mapState, mapMutations } from 'vuex';

export default {
  computed: {
    ...mapState({
      count: state =&gt; state.counter.count
    })
  },
  methods: {
    ...mapMutations({
      incrementCount: 'counter/increment'
    })
  }
};

In this code snippet, we are watching the `count` value from the Vuex store and displaying it in our component. When the `incrementCount` method is called, it commits the `increment` mutation defined in the store to increment the count value.

By using `mapState` and `mapMutations`, we are able to map the state and mutations from the Vuex store into our component, making it easy to watch and update values efficiently.

To store values in Vuex, you'll need to define mutations in your store to make changes to the state. Mutations are synchronous functions that receive the current state as the first argument and the payload as the second argument. By committing mutations, you can change the state data stored in Vuex.

Here's an example of how you can store values in Vuex by defining mutations:

// store/modules/counter.js

const state = {
  count: 0
};

const mutations = {
  increment(state) {
    state.count++;
  }
};

export default {
  state,
  mutations
};

In this code snippet, we have a Vuex module for a counter that stores a count value. The `increment` mutation increments the count value whenever it is committed.

By defining mutations like this in your Vuex store modules, you can easily store and update values in a centralized manner, making your application more robust and maintainable.

In conclusion, watching and storing values from Vuex in your Vue.js applications is a powerful way to manage state and build reactive user interfaces. By leveraging computed properties to watch values and defining mutations to store values in Vuex, you can create more scalable and efficient applications. So, dive into Vuex, experiment with watching and storing values, and see your Vue.js skills flourish!