Vue TodoList案例详解

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<template>
<div id="root">
  <div class="todo-container">
    <div class="todo-wrap">
      <Top :received="received" />
      <List :todos="todos" :checkTodo="checkTodo" :deleteTodo="deleteTodo" />
      <Bottom :todos="todos" :checkAllTodo="checkAllTodo" :clearAllTodo="clearAllTodo" />
    </div>
  </div>
</div>
</template>
<script>
import Top from './components/Top.vue'
import Bottom from './components/Bottom.vue'
import List from './components/List.vue'
export default {
  name: 'App',
  components: {
    Top,
    List,
    Bottom
  },
  data() {
    return {
      todos: [{
          id: '001',
          title: '吃饭',
          done: true
        },
        {
          id: '002',
          title: '睡觉',
          done: false
        },
        {
          id: '003',
          title: '打豆豆',
          done: false
        },
      ]
    }
  },
  methods: {
    //添加一个todo
    received(todoObj) {
      this.todos.unshift(todoObj);
    },
    //取消勾选todo
    checkTodo(id) {
      this.todos.forEach((todo) => {
        //函数体
        if (todo.id === id) todo.done = !todo.done;
      })
    },
    //删除
    deleteTodo(id) {
      this.todos = this.todos.filter(todo => todo.id !== id)
    },
    //全选 全不选
    checkAllTodo(done) {
      this.todos.forEach((todo) => {
        todo.done = done
      })
    },
    //清除所有已经完成的数据
    clearAllTodo() {
      this.todos = this.todos.filter((todo) => {
        return !todo.done
      })
    }
  }
}
</script>
<style lang="css">
/*base*/
body {
  background: #fff;
}
.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}
.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}
.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}
.btn:focus {
  outline: none;
}
.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

 

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