Vue学习笔记21--列表过滤(watch属性过滤 + computed属性过滤)

列表过滤--监听属性过滤

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>列表过滤</title>
  <script type="text/javascript" src="../Js/vue.js"></script>
</head>

<body>
  <div id="root">
    <h2>人员列表信息(遍历数组)：</h2>
    <hr>
    <!-- <button @click.once="add">新增人员</button> -->
    <!-- <button @click.once="searchPersons">搜索</button> -->
    <input type="text" placeholder="请输入姓名" v-model="keyWord">
    <!-- 遍历数组 -->
    <ul>
      <li v-for="p in filPersonList" :key="p.id">
        {{p.id}}-{{p.name}}-{{p.age}}-{{p.sex}}
      </li>
    </ul>
    <hr>
  </div>
</body>

</html>
<script type="text/javascript">
  Vue.config.productionTip = false
  const vm = new Vue({
    el: '#root',
    data: {
      keyWord: '',
      personList: [
        { id: '001', name: '乔峰', age: 28, sex: '男' },
        { id: '002', name: '虚竹', age: 25, sex: '男' },
        { id: '003', name: '段誉', age: 22, sex: '男' },
        { id: '004', name: '童姥', age: 90, sex: '女' },
        { id: '005', name: '李秋水', age: 88, sex: '女' },
      ],
      filPersonList: [

      ],

    },
    watch: {
      keyWord: {
        immediate: true,
        handler (val) {
          this.filPersonList = this.personList.filter((p) => {
            return p.name.indexOf(val) !== -1
          })
        }
      }
    }
  })
</script>

列表过滤--计算属性过滤(运行效果如上)

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>列表过滤之computed</title>
  <script type="text/javascript" src="../Js/vue.js"></script>
</head>

<body>
  <div id="root">
    <h2>人员列表信息(遍历数组)：</h2>
    <hr>
    <!-- <button @click.once="add">新增人员</button> -->
    <!-- <button @click.once="searchPersons">搜索</button> -->
    <input type="text" placeholder="请输入姓名" v-model="keyWord">
    <!-- 遍历数组 -->
    <ul>
      <li v-for="p in filPersonList" :key="p.id">
        {{p.id}}-{{p.name}}-{{p.age}}-{{p.sex}}
      </li>
    </ul>
    <hr>
  </div>
</body>

</html>
<script type="text/javascript">
  Vue.config.productionTip = false
  const vm = new Vue({
    el: '#root',
    data: {
      keyWord: '',
      personList: [
        { id: '001', name: '乔峰', age: 28, sex: '男' },
        { id: '002', name: '虚竹', age: 25, sex: '男' },
        { id: '003', name: '段誉', age: 22, sex: '男' },
        { id: '004', name: '童姥', age: 90, sex: '女' },
        { id: '005', name: '李秋水', age: 88, sex: '女' },
      ],
    },
    computed: {
      // 简写,简写时确保不用settter
      // myfullname: function () {
      filPersonList () {
        return this.personList.filter((p) => {
          return p.name.indexOf(this.keyWord) !== -1
        })
      }
    },



  })
</script>

posted on 2024-02-28 15:51 sunwugang 阅读(43) 评论(0) 收藏举报

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