使用vue-cli编写todolist组件

工程结构

 启动工程

npm run dev

TodoList.vue

<!--模板-->
<template>
  <div>
    <div>
      <input class="item" v-model="inputValue"/>
      <button @click="submit">提交</button>
      <ul>
        <todo-item v-for="(item,index) of list" :key="index" :content="item" :index="index" @delete="mydelete"></todo-item>
      </ul>
    </div>
  </div>

</template>

<script>
import TodoItem from './components/TodoItem'
// 此处用来写逻辑,必须空出一行去写
export default {
  // 这块必须用函数去操作，注意缩进，缩进不对的话各路报错
  components: {
    'todo-item': TodoItem
  },
  data () {
    return {
      inputValue: '',
      list: []
    }
  },
  methods: {
    submit () {
      this.list.push(this.inputValue)
      this.inputValue = ''
    },
    mydelete (index) {
      this.list.splice(index, 1)
    }
  }
}
</script>
<!--这个标签用于写样式-->
<style scoped>
</style>

TodoItem.vue

<template>
  <li class="item" @click="deleteItem">{{content}}</li>
</template>

<script>
export default {
  props: ['content', 'index'],
  methods: {
    deleteItem () {
      this.$emit('delete', this.index)
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<!--scoped作用域，设置样式仅用于当前类，不加就是全局生效-->
<style scoped>
  .item {color: aqua}
</style>