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