Commits and Mutations examples vuex

module.js

import service from './service-http'

const SET_USER = 'user/SET_USER'


const state = {
  user: ''
}

const actions = {
  loadUser (context, payload) {
    // here layer service between communication backend and frontend
    service.getByUser(payload)
      .then(data => {
       context.commit(SET_USER, data)
    })
  }
}

const mutations = {
  [SET_USER](state, user) {
    state.user = user
  }
}