vm.$forceUpdate();

new Vue({
  el: '#app',
  data: {
    person: {
      name: 'Edson'
    }
  },
  methods: {
    changeName() {
      // because name is declared in data, whenever it
      // changes, Vue automatically updates
      this.person.name = 'Arantes';
    },
    changeNickname() {
      // because nickname is NOT declared in data, when it
      // changes, Vue will NOT automatically update
      this.person.nickname = 'Pele';
      // although if anything else updates, this change will be seen
    },
    changeNicknameProperly() {
      // when some property is NOT INITIALLY declared in data, the correct way
      // to add it is using Vue.set or this.$set
      Vue.set(this.person, 'address', '123th avenue.');

      // subsequent changes can be done directly now and it will auto update
      this.person.address = '345th avenue.';
    }
  }
})

/* CSS just for the demo, it is not necessary at all! */
span:nth-of-type(1),button:nth-of-type(1) { color: blue; }
span:nth-of-type(2),button:nth-of-type(2) { color: red; }
span:nth-of-type(3),button:nth-of-type(3) { color: green; }
span { font-family: monospace }

<script src="https://unpkg.com/vue"></script>

<div id="app">
  <span>person.name: {{ person.name }}</span><br>
  <span>person.nickname: {{ person.nickname }}</span><br>
  <span>person.address: {{ person.address }}</span><br>
  <br>
  this.person.name = 'Arantes'; (will auto update because `name` was in `data`)<br>
  this.person.nickname = 'Pele'; (will NOT auto update because `nickname` was not in `data`)<br>
  Vue.set(this.person, 'address', '99th st.'); (WILL auto update even though `address` was not in `data`)
  <br>
  <br>
  For more info, read the comments in the code. Or check the docs on Reactivity (link below).
</div>

<script>
 export default {
  data() {
    return {
      componentKey: 0,
    };
  },
  methods: {
    forceRerender() {
      this.componentKey += 1;  
    }
  }
 }
</script>

<div v-if="trulyvalue">

 </div>

vm.$set("x",0);
vm.$delete("x");

created() {
            EventBus.$on('refresh-stores-list', () => {
                this.$forceUpdate();
            });
        },

path: ":model",
name: "model",
component: MyComponent,
props: (route) => ({
    // other props...
    timestamp: + new Date()
})

    data () {
        return {
            userInfo: null,
            offers: null
        }
    },

    watch: {
        '$route'() {
            this.userInfo = null
            this.offers = null
            this.loadUserInfo()
            this.getUserOffers()
        }
    }

<script>
export default {
  data() {
    return {
      currentTab: 0,
      tab: null,
      colorFilter: "",
      colors: ["None", "Beige", "Black"], 
      items: ["Image Gallery", "Favorite Images"]
    };
  },
  methods: {
    filteredImages: function() {
      return this.$store.getters.getImageDatabase.filter(img => {
        if (img.color.match(this.colorFilter)) return true;
      });
    },
    updateGallery: async function() {
      // instance is responsive to changes
      // change is made and forces filteredImages to do its thing
      // async await forces the browser to slow down and allows changes to take effect
      await this.$nextTick(function() {
        this.colorFilter = "Black";
      });

      await this.$nextTick(function() {
        // Doesnt hurt to zero out filters on change
        this.colorFilter = "";
      });
    }
  }
};
</script>