vue学习--常用特性(一、表单操作)

Vue常用特性

5.1 常用特性概览

  • 表单操作
  • 自定义指令
  • 计算属性
  • 过滤器
  • 侦听器
  • 生命周期

5.2 表单操作

1.基于Vue的表单操作

  • Input 单行文本
  • textarea 多行文本
  • select 下拉多选
  • radio 单选框
  • checkbox 多选框
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <style type="text/css">
  
  form div {
    height: 40px;
    line-height: 40px;
  }
  form div:nth-child(4) {
    height: auto;
  }
  form div span:first-child {
    display: inline-block;
    width: 100px;
  }
  </style>
</head>
<body>
  <div id="app">
    <form action="http://itcast.cn">
      <div>
        <span>姓名：</span>
        <span>
          <input type="text" v-model='uname'>
        </span>
      </div>
      <div>
        <span>性别：</span>
        <span>
          <input type="radio" id="male" value="1" v-model='gender'>
          <label for="male">男</label>
          <input type="radio" id="female" value="2" v-model='gender'>
          <label for="female">女</label>
        </span>
      </div>
      <div>
        <span>爱好：</span>
        <input type="checkbox" id="ball" value="1" v-model='hobby'>
        <label for="ball">篮球</label>
        <input type="checkbox" id="sing" value="2" v-model='hobby'>
        <label for="sing">唱歌</label>
        <input type="checkbox" id="code" value="3" v-model='hobby'>
        <label for="code">写代码</label>
      </div>
      <div>
        <span>职业：</span>
        <select v-model='occupation' multiple>
          <option value="0">请选择职业...</option>
          <option value="1">教师</option>
          <option value="2">软件工程师</option>
          <option value="3">律师</option>
        </select>
      </div>
      <div>
        <span>个人简介：</span>
        <textarea v-model='desc'></textarea>
      </div>
      <div>
        <input type="submit" value="提交" @click.prevent='handle'>
      </div>
    </form>
  </div>
  <script type="text/javascript" src="js/vue.js"></script>
  <script type="text/javascript">
    /*
      表单基本操作
    */
    var vm = new Vue({
      el: '#app',
      data: {
        uname: 'lisi',
        gender: 2,
        hobby: ['2','3'],
        // occupation: 3
        occupation: ['2','3'],
        desc: 'nihao'
      },
      methods: {
        handle: function(){
          // console.log(this.uname)
          // console.log(this.gender)
          // console.log(this.hobby.toString())
          // console.log(this.occupation)
          console.log(this.desc)

        }
      }
    });
  </script>
</body>
</html>

2. 表单域修饰符

  • number：转化为数值
  • trim：去掉开始和结尾的空格
  • lazy : 将input事件切换为change事件

<input v-model.number="age" type="number">

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
  <div id="app">
    <input type="text" v-model.number='age'>
    <input type="text" v-model.trim='info'>
    <input type="text" v-model.lazy='msg'>
    <div>{{msg}}</div>
    <button @click='handle'>点击</button>
  </div>
  <script type="text/javascript" src="js/vue.js"></script>
  <script type="text/javascript">
    /*
      表单域修饰符
    */
    var vm = new Vue({
      el: '#app',
      data: {
        age: '',
        info: '',
        msg: ''
      },
      methods: {
        handle: function(){
          // console.log(this.age + 13)
          // console.log(this.info.length)
        }
      }
    });
  </script>
</body>
</html>
posted @ 2020-04-08 21:56  一纸年华  阅读(0)  评论(0)  编辑  收藏  举报  来源