SOURCE

var app = new Vue({
  el: '#app',
  data: {
    items: [1,2,3],
    inputValue: '',
    radioValue: '',
    checkboxValue: ''
  },
  methods: {
    onClick() {
      if(this.inputValue) {
      	this.items.push(this.inputValue)
      }
    }
  }
})

<div id="app">
  <div v-for="item in items">{{item}}</div>
  <input type="text" v-model="inputValue"/>
  <div>{{radioValue}}</div>
  <div>{{checkboxValue}}</div>
  <input type="radio" name="1" v-model="radioValue" value="1" />
  <input type="radio" name="1"v-model="radioValue" value="2" />
  <input type="checkbox" v-model="checkboxValue" />
  <input type="checkbox" :checked="checkboxValue" />
  <button @click="onClick">push</button>
</div>