vue中v-model的应用及使用详解

<div id="app">
  <input v-model="test">
  <!-- <input :value="test" @input="test= $event.target.value"> --><!--语法糖-->
</div>
<script src="/resources/js/vue.js"></script>
<script>
  new Vue({
    el: '#app',
    data: {
      test: '这是一个测试'
    }
  });
</script>

<!--下拉框-->
<div id="app">
  <select v-model="selected">
    <option value="A被选">A</option>
    <option value="B被选">B</option>
    <option value="C被选">C</option>
  </select>
  <span>Selected: {{ selected }}</span>
</div>
<script src="/resources/js/vue.js"></script>
<script>
  new Vue({
    el: '#app',
    data: {
      selected: ''
    }
  });
</script>

<!--单选按钮-->
<div id="app">
  <input type="radio" id="small" value="small_value" v-model="picked">
  <label for="small">small</label>
  <br>
  <input type="radio" id="big" value="big_value" v-model="picked">
  <label for="big">big</label>
  <br>
  <span>Picked: {{ picked }}</span>
</div>
<script src="/resources/js/vue.js"></script>
<script>
  new Vue({
    el: '#app',
    data: {
      picked: ''
    }
  })
</script>

<!--复选框-->
<div id="app">
  <input type="checkbox" id="one" value="value_one" v-model.lazy="checkedNames">
  <label for="one">选项一</label>
  <input type="checkbox" id="two" value="value_two" v-model.lazy="checkedNames">
  <label for="two">选项二</label>
  <input type="checkbox" id="three" value="value_three" v-model.lazy="checkedNames">
  <label for="three">选项三</label>
  <br>
  <span>Checked names: {{ checkedNames }}</span>
</div>
<script src="/resources/js/vue.js"></script>
<script>
  new Vue({
    el: '#app',
    data: {
      checkedNames: []
    }
  })
</script>

  <!-- 在每次 input 事件触发后将输入框的值与数据进行同步，添加 lazy 修饰符，从而转变为使用 change 事件进行同步 -->
  <input v-model.lazy="msg" >
  <!--去除字符串首尾的空格-->
  <input v-model.trim="msg">
  <!--将数据转化为值类型-->
  <input v-model.number="age" type="number">

<input v-model="inputValue">

<input v-bind:value="inputValue" v-on:input="inputValue = $event.target.value">

<my-component v-model="inputValue"></my-component>

<my-component v-bind:value="inputValue" v-on:input="inputValue = argument[0]"></my-component>

this.$emit('input', value)