Checkbox多选框

多选框

何时使用

• 在一组可选项中进行多项选择时；
• 单独使用可以表示两种状态之间的切换，和 switch 类似。区别在于切换 switch 会直接触发状态改变，而 checkbox 一般用于状态标记，需要和提交操作配合。

代码演示

基本用法

简单的checkbox

<template>
  <a-checkbox @change="onChange">Checkbox</a-checkbox>
</template>
<script>
export default {
  methods: {
    onChange (e) {
      console.log(`checked = ${e.target.checked}`)
    },
  },
}
</script>

全选

在实现全选效果时，你可能会用到indeterminate属性

<template>
  <div>
    <div :style="{ borderBottom: '1px solid #E9E9E9' }">
      <a-checkbox
        :indeterminate="indeterminate"
        @change="onCheckAllChange"
        :checked="checkAll"
      >
        Check all
      </a-checkbox>
    </div>
    <br />
    <a-checkbox-group :options="plainOptions" v-model="checkedList" @change="onChange" />
  </div>
</template>
<script>
const plainOptions = ['Apple', 'Pear', 'Orange']
const defaultCheckedList = ['Apple', 'Orange']
export default {
  data () {
    return {
      checkedList: defaultCheckedList,
      indeterminate: true,
      checkAll: false,
      plainOptions,
    }
  },
  methods: {
    onChange (checkedList) {
      this.indeterminate = !!checkedList.length && (checkedList.length < plainOptions.length)
      this.checkAll = checkedList.length === plainOptions.length
    },
    onCheckAllChange (e) {
      Object.assign(this, {
        checkedList: e.target.checked ? plainOptions : [],
        indeterminate: false,
        checkAll: e.target.checked,
      })
    },
  },
}
</script>

不可用

checkbox 不可用

<template>
  <div>
    <a-checkbox :defaultChecked="false" disabled />
    <br />
    <a-checkbox defaultChecked disabled />
  </div>
</template>

受控的checkbox

联动checkbox

<template>
  <div>
    <p :style="{ marginBottom: '20px' }">
      <a-checkbox
        :checked="checked"
        :disabled="disabled"
        @change="onChange"
      >
        {{label}}
      </a-checkbox>
    </p>
    <p>
      <a-button
        type="primary"
        size="small"
        @click="toggleChecked"
      >
        {{!checked ? 'Check' : 'Uncheck'}}
      </a-button>
      <a-button
        :style="{ marginLeft: '10px' }"
        type="primary"
        size="small"
        @click="toggleDisable"
      >
        {{!disabled ? 'Disable' : 'Enable'}}
      </a-button>
    </p>
  </div>
</template>
<script>
export default {
  data () {
    return {
      checked: true,
      disabled: false,
    }
  },
  computed: {
    label () {
      const { checked, disabled } = this
      return `${checked ? 'Checked' : 'Unchecked'}-${disabled ? 'Disabled' : 'Enabled'}`
    },
  },
  methods: {
    toggleChecked () {
      this.checked = !this.checked
    },
    toggleDisable () {
      this.disabled = !this.disabled
    },
    onChange (e) {
      this.checked = e.target.checked
    },
  },
}
</script>

Checkbox组

方便的从数组生成checkbox

<template>
  <div>
    <a-checkbox-group :options="plainOptions" v-model="value" @change="onChange" />
    <br />
    <a-checkbox-group :options="plainOptions" :defaultValue="['Apple']" @change="onChange" />
    <br />
    <a-checkbox-group :options="options" :value="['Pear']" @change="onChange" />
    <br />
    <a-checkbox-group :options="optionsWithDisabled" disabled :defaultValue="['Apple']" @change="onChange">
      <span style="color: red" slot="label" slot-scope="{value}">{{value}}</span>
    </a-checkbox-group>
  </div>
</template>
<script>
const plainOptions = ['Apple', 'Pear', 'Orange']
const options = [
  { label: 'Apple', value: 'Apple' },
  { label: 'Pear', value: 'Pear' },
  { label: 'Orange', value: 'Orange' },
]
const optionsWithDisabled = [
  { value: 'Apple' },
  { label: 'Pear', value: 'Pear' },
  { label: 'Orange', value: 'Orange', disabled: false },
]
export default {
  data () {
    return {
      plainOptions,
      options,
      optionsWithDisabled,
      value: [],
    }
  },
  methods: {
    onChange (checkedValues) {
      console.log('checked = ', checkedValues)
      console.log('value = ', this.value)
    },
  },
}
</script>

布局

Checkbox.Group内嵌Checkbox并与Grid组件一起使用，可以实现灵活的布局

<template>
  <a-checkbox-group @change="onChange">
    <a-row>
      <a-col :span="8"><a-checkbox value="A">A</a-checkbox></a-col>
      <a-col :span="8"><a-checkbox value="B">B</a-checkbox></a-col>
      <a-col :span="8"><a-checkbox value="C">C</a-checkbox></a-col>
      <a-col :span="8"><a-checkbox value="D">D</a-checkbox></a-col>
      <a-col :span="8"><a-checkbox value="E">E</a-checkbox></a-col>
    </a-row>
  </a-checkbox-group>
</template>
<script>
export default {
  methods: {
    onChange (checkedValues) {
      console.log('checked = ', checkedValues)
    },
  },
}
</script>

API

属性

Checkbox

事件

Checkbox Group

事件

方法

Checkbox