Vuejs -01 todolist制作

<template>
  <div id="app">
    <h1 v-text="title" ></h1>
    <input v-model="newItem" v-on:keyup.enter="addNew"/>
    <ul>
      <li v-for="item in items" v-bind:class="{finished: item.isFinished}" v-on:click="toggleFinish(item)"> 
        {{item.label}}
      </li>
    </ul>
  </div>
</template>

<script>
import Store from './store'
console.log(Store)
export default {
  data:function() {
     return {
       title: 'this is a todo list',
       items: (Store.fetch() == null ? []: Store.fetch()),
       newItem:''
     }
  },
  watch:{
    items: {
       handler:function(items) {
          Store.save(items)
       },
       deep:true
    }
  },
  methods:{
    toggleFinish: function(item) {
      item.isFinished = !item.isFinished;
      console.log(item)
    },
    addNew: function() {
       this.items.push({
        label: this.newItem,
        isFinished: false
       }),
       this.newItem = ''
    }

  }

}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>