（11）打鸡儿教你Vue.js

表单

v-model 指令在表单控件元素上创建双向数据绑定

<div id="app">
  <p>单个复选框：</p>
  <input type="checkbox" id="checkbox" v-model="checked">
  <label for="checkbox">{{ checked }}</label>
    
  <p>多个复选框：</p>
  <input type="checkbox" id="da" value="da" v-model="checkedNames">
  <label for="da">da</label>
  <input type="checkbox" id="google" value="Google" v-model="checkedNames">
  <label for="google">Google</label>
  <input type="checkbox" id="taobao" value="Taobao" v-model="checkedNames">
  <label for="taobao">taobao</label>
  <br>
  <span>选择的值为: {{ checkedNames }}</span>
</div>
 
<script>
new Vue({
  el: '#app',
  data: {
    checked : false,
    checkedNames: []
  }
})
</script>

单选按钮：

<div id="app">
  <input type="radio" id="da" value="da" v-model="picked">
  <label for="da">da</label>
  <br>
  <input type="radio" id="google" value="Google" v-model="picked">
  <label for="google">Google</label>
  <br>
  <span>选中值为: {{ picked }}</span>
</div>
 
<script>
new Vue({
  el: '#app',
  data: {
    picked : 'da'
  }
})
</script>

<div id="app">
  <select v-model="selected" name="com">
    <option value="">选择一个网站</option>
    <option value="www.da.com">da</option>
    <option value="www.google.com">Google</option>
  </select>
 
  <div id="output">
      选择的网站是: {{selected}}
  </div>
</div>
 
<script>
new Vue({
  el: '#app',
  data: {
    selected: '' 
  }
})
</script>

修饰符
.lazy转变为在 change 事件中同步

<input v-model.lazy="msg" >

.number

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

.trim

<input v-model.trim="msg">

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