vue2.0 之表单控件绑定

表单控件绑定v-model

1、文本

<template>
  <div>
    <input type="text" name="" v-model="myVal"><br/>
    {{ myVal }}<br/>
    <input type="text" name="" v-model.lazy="myVal1"><br/>
    {{ myVal1 }}<br/>
    <input type="text" name="" v-model.number="myVal2"><br/>
    {{ typeof myVal2 }}<br/>
    <input type="text" name="" v-model.trim="myVal3"><br/>
    {{ myVal3 }}<br/>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        myVal: '',
        myVal1: '',
        myVal2: '',
        myVal3: ''
      }
    }
  }
</script>

<style>
  html {
    height: 100%;
  }
</style>

v-model指令在表单控件元素上创建双向数据绑定。

• lazy：延迟显示
• number：转化为数字类型
• trim：去除左右空字符

2、复选框、单选按钮

<template>
  <div>
    {{ myVal }} <br/>
    <input type="checkbox" name="" value="apple" v-model="myVal"/>
    <label>apple</label>
    <input type="checkbox" name="" value="banana" v-model="myVal"/>
    <label>banana</label>
    <input type="checkbox" name="" value="orange" v-model="myVal"/>
    <label>orange</label>
    <br/> {{ myVal1 }} <br/>
    <input type="radio" name="" value="apple" v-model="myVal1"/>
    <label>apple</label>
    <input type="radio" name="" value="banana" v-model="myVal1"/>
    <label>banana</label>
    <input type="radio" name="" value="orange" v-model="myVal1"/>
    <label>orange</label>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        myVal: [],
        myVal1: ''
      }
    }
  }
</script>

<style>
  html {
    height: 100%;
  }
</style>

3、选择列表

案例一：

<template>
  <div>
    {{ myVal }} <br/>
    <select v-model="myVal">
      <option value="0">apple</option>
      <option value="1">banana</option>
      <option value="2">orange</option>
    </select>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        myVal: ''
      }
    }
  }
</script>

<style>
  html {
    height: 100%;
  }
</style>

案例二：

<template>
  <div>
    {{ myVal }} <br/>
    <select v-model="myVal">
      <option v-for="item in options" :value="item.val">{{ item.name }}</option>
    </select>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        myVal: '',
        options: [
          {
            name: 'apple',
            val: 0
          },
          {
            name: 'banana',
            val: 1
          },
          {
            name: 'orange',
            val: 2
          }
        ]
      }
    }
  }
</script>

<style>
  html {
    height: 100%;
  }
</style>