1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
  <!-- 主体区域 -->
  <section id="todoapp">
    <!-- 输入框 -->
    <header class="header">
      <h1>小黑记事本</h1>
      <input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
        class="new-todo" />
    </header>
    <!-- 列表区域 -->
    <section class="main">
      <ul class="todo-list">
        <li class="todo" v-for="(item,index) in list">
          <div class="view">
            <span class="index">{{ index+1 }}.</span>
            <label>{{ item }}</label>
            <button class="destroy" @click="remove(index)"></button>
          </div>
        </li>
      </ul>
    </section>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
    <!-- 统计和清空 -->
    <footer class="footer" >
      <span class="todo-count">
        <strong>{{list.length}}</strong> items left
      </span>
      <button class="clear-completed">
        Clear
      </button>
    </footer>
  </section>
   <!-- 底部 -->
  <footer class="info">
    <p>
      <a href="http://www.itheima.com/"><img src="./img/black.png" alt="" /></a>
    </p>
  </footer>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
  <script>
    var app = new Vue({
      el: "#todoapp",
      data: {
        list: ["写代码", "吃饭饭", "睡觉觉"],
        inputValue: "好好学习,天天向上"
      },
      methods: {
        add: function () {
          this.list.push(this.inputValue);
        },
        remove:function(index){
          this.list.splice(index,1);
        }
      },
    })
  </script>

1
2
3
4
5
6
7
8
9
body {
  //最小和最大宽度
  min-width: 230px;
  max-width: 550px;
  //抗锯齿渲染
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

1
2
3
4
5
6
7
8
9
10
      <ul>
        <li v-for="(item,index) in list">
          <div>
            <span>{{ index+1 }}.</span>
            <label>{{ item }}</label>
            <button @click="remove(index)"></button>
          </div>
        </li>
      </ul>

1
2
3
4
<!-- v-model双向绑定（学习重点），keyup表示松开键盘时触发， -->
<input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
class="new-todo"/>

1
2
3
4
5
// splice可以用来删除/添加数组元素
// splice(index,n,"ab","cd")删除从index开始后面的n个元素，
//并从索引处添加"ab""cd"两个字符串。
this.list.splice(index,1)