Vue 表单控件与绑定

Question

一、文本框

1.1 普通文本框

<div id="app-1">
  <p><input v-model="textBox" placeholder="输入内容...">输入的内容：{{ textBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      textBox: ''
    }
  })
</script>

1.2 数字文本框

<div id="app-1">
  <p><input v-model.number="numberTextBox" type="number" placeholder="输入内容..."> 输入的内容：{{ numberTextBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      numberTextBox: ''
    }
  })
</script>

.number 参数会强制把返回值转成 Number 类型，因为就算是 type="number" ，返回的也是字符串型

1.3 多行输入框

<div id="app-1">
  <p><textarea v-model="multiTextBox" placeholder="输入内容..."></textarea></p>
  <p>输入的内容：</p>
  <p style="white-space:pre">{{ multiTextBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      multiTextBox: ''
    }
  })
</script>

style="white-space:pre" 表示空白会被浏览器保留。其行为方式类似 HTML 中的 <pre> 标签

二、复选框

2.1 单个复选框

<div id="app-1">
  <input type="checkbox" id="checkbox" v-model="singleCheckBox">
  <label for="checkbox">{{ singleCheckBox }}</label>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      singleCheckBox: false
    }
  })
</script>

2.2 定义属性单个复选框

<div id="app-1">
  <input type="checkbox" id="checkbox" v-model="customSingleCheckBox" v-bind:true-value="customTrue" v-bind:false-value="customFalse">
  <label for="checkbox">{{ customSingleCheckBox }}</label>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      customTrue: '真',
      customFalse: '假',
      customSingleCheckBox: '假'
    }
  })
</script>

v-bind:true-value 设置为真时的属性， v-bind:false-value 设置为假时的属性

2.3 多个复选框

<div id="app-1">
  <input type="checkbox" id="tansea" value="TanSea" v-model="multiCheckBox">
  <label for="tansea">TanSea</label>
  <input type="checkbox" id="google" value="Google" v-model="multiCheckBox">
  <label for="google">Google</label>
  <input type="checkbox" id="baidu" value="Baidu" v-model="multiCheckBox">
  <label for="baidu">Baidu</label>
  <p>选择的项：{{ multiCheckBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      multiCheckBox: []
    }
  })
</script>

三、单选框

复制代码
<div id="app-1">
  <input type="radio" id="male" value="男" v-model="radioBox">
  <label for="male">男</label>
  <input type="radio" id="female" value="女" v-model="radioBox">
  <label for="female">女</label>
  <p>选择的项：{{ radioBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      radioBox: ''
    }
  })
</script>

四、下拉框

4.1 普通下拉框

<div id="app-1">
  <select v-model="comboBox">
    <option disabled value="">请选择一项</option>
    <option>男</option>
    <option>女</option>
  </select>
  <p>选择的项：{{ comboBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      comboBox: ''
    }
  })
</script>

4.2 动态绑定下拉框

<div id="app-1">
  <select v-model="dynamicComboBox">
    <option v-for="optionItem in optionItems" v-bind:value="optionItem.value">
      {{ optionItem.text }}
    </option>
  </select>
  <p>选择的项：{{ dynamicComboBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      dynamicComboBox: '',
        optionItems: [
          { value: 'TanSea', text: '双子宫殿' },
          { value: 'Google', text: '谷歌搜索' },
          { value: 'Baidu', text: '百度搜索' }
        ]
    }
  })
</script>

4.3 多选列表

<div id="app-1">
  <p><select v-model="multiComboBox" multiple>
    <option>双子宫殿</option>
    <option>谷歌搜索</option>
    <option>百度搜索</option>
  </select></p>
  <p>选择的项：{{ multiComboBox }}</p>
</div>
<script type="text/javascript">
  var vm1 = new Vue({
    el: '#app-1',
    data: {
      multiComboBox: []
    }
  })
</script>