How to change v-model value from JS

Question

I'm using Google autocomplete address form. I found example at google official web page. Everything is fine. Everything works! but it's native Javascript,

I have Vue application and I don't like how I change text input values from JS script. The idea is that when I change something in main input, JS event listener should change values for other inputs:

 document.getElementById(addressType).value = val;

Problem is that I should use "document" to change values:

 document.getElementById('street_number').value

I would like to have something like tat:

 <input type="text" v-model="input.address" ref="addressRef">

And to read values:

export default {
        data() {
            return {
                input: {
                    address: "",
                    ...
                }

            };
        },
        methods: {
            test() {
                console.log(this.input.address);
                console.log(this.$refs.addressRef);
        }
       }

So the question is:

• How to set the value from JS code to update binding values? Right now values are null because I use "getElementById("id").value = val"

Answer 1

You can emit input event afterwards which v-model relies on for updating its value:

let el = document.getElementById("id");
el.value = val;
el.dispatchEvent(new Event('input'));

In action:

Vue.config.devtools = false

const app = new Vue({
  el: '#app',
  
  data: {
    message: null
  },
  
  methods: {
    updateBinding() {
      let el = document.getElementById("input");
      el.value = 'Hello!';    
      el.dispatchEvent(new Event('input'));
    }
  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
  <button @click="updateBinding">Click me </button><br>
  <input id="input" v-model="message" placeholder="edit me">
  <p>Message is: {{ message }}</p>
</div>