Can you explain the distinction between mutation and action?

Question

Can you explain the distinction between mutation and action?

Can you explain the rationale behind Vuex having both "actions" and "mutations?"

I can see the point of components not directly modifying state, but it seems redundant to have actions trigger mutations to update the state.

What sets "actions" apart from "mutations," how do they cooperate, and why did the creators of Vuex choose this design?

I've experimented with....

import Vuex from 'vuex'

const store = new Vuex.Store({
  state: {
    count: 1
  },
  mutations: {
    INCREMENT (state) {
      // mutate state
      state.count++
    }
  }
})

Error code 502

javascript vue.js vuex

Answer 1

Answer №1

It is important that components do not directly alter the state.
Instead, components should trigger actions.
Actions contain business logic such as API calls, which then trigger mutations to update the state.

Answer 2

It is important that components do not directly alter the state.
Instead, components should trigger actions.
Actions contain business logic such as API calls, which then trigger mutations to update the state.

Answer 3

Answer №2

When it comes to actions and mutations, they share similarities in behavior but also have distinct differences:

Actions cannot directly alter your state, so they must initiate a mutation operation.
Think of actions as functions that trigger changes in the state.
Mutations are specifically responsible for modifying the Vuex store's state. To execute a mutation, you need to first trigger an action that calls the mutation.

For instance:

 actions: {
    MODIFY({dispatch, commit, getters, rootGetters}, obj) {
        //Perform some actions
        commit('mymutation', obj)
    }
}

mutations: {
    mymutation(state, obj) {
        store.state.count = 1
    }
}

To delve deeper into mutations and actions, refer to Vuex documentation

Answer 4

When it comes to actions and mutations, they share similarities in behavior but also have distinct differences:

Actions cannot directly alter your state, so they must initiate a mutation operation.
Think of actions as functions that trigger changes in the state.
Mutations are specifically responsible for modifying the Vuex store's state. To execute a mutation, you need to first trigger an action that calls the mutation.

For instance:

 actions: {
    MODIFY({dispatch, commit, getters, rootGetters}, obj) {
        //Perform some actions
        commit('mymutation', obj)
    }
}

mutations: {
    mymutation(state, obj) {
        store.state.count = 1
    }
}

To delve deeper into mutations and actions, refer to Vuex documentation

Answer 5

Answer №3

It is essential that Mutations Must Be Synchronous, as async operations cannot change the state.

To overcome this limitation, vuex introduces actions to modify the state through executing synchronous mutations

In scenarios where a sync operation is needed, simply use mutation; for async tasks, combine action with mutation

Answer 6

It is essential that Mutations Must Be Synchronous, as async operations cannot change the state.

To overcome this limitation, vuex introduces actions to modify the state through executing synchronous mutations

In scenarios where a sync operation is needed, simply use mutation; for async tasks, combine action with mutation

Can you explain the distinction between mutation and action?

Answer №1

Answer №2

Answer №3

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