node-fftcg/frontend/src/views/About.vue

<template>
  <v-container>
    <v-flex mb-4>
      <h1 class="display-2 font-weight-bold mb-3">Hello World!</h1>
      <p class="subheading font-weight-regular">
        App under development, please don't submit any valuable data!
      </p>
    </v-flex>
    <p>user session: {{ sessionID }}</p>
    <v-btn @click.native="logout">Logout</v-btn>
  </v-container>
</template>

<script>
import * as Cookies from 'js-cookie'
import axios from '@/plugins/axios'

export default {
  name: 'About',

  data: () => ({
    sessionID: ''
  }),

  methods: {
    logout() {
      axios
        .post('/user/logout', {
          session: Cookies.get('session')
        })
        .then(response => {
          if (response.data.success) {
            Cookies.remove('session')
            this.$router.push({name: 'home'})
          }
        })
    }
  },

  mounted() {
    axios
      .post('/user/login', {
        session: Cookies.get('session')
      })
      .then(response => {
        this.sessionID = response.data.message
      })
  }
}
</script>