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289 lines
7.6 KiB
Markdown
289 lines
7.6 KiB
Markdown
## Radio 单选框
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在一组备选项中进行单选
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### 基础用法
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由于选项默认可见，不宜过多，若选项过多，建议使用 Select 选择器。
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:::demo 要使用 Radio 组件，只需要设置`v-model`绑定变量，选中意味着变量的值为相应 Radio `label`属性的值，`label`可以是`String`、`Number`或`Boolean`。
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```html
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<template>
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<el-radio v-model="radio" label="1">备选项</el-radio>
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<el-radio v-model="radio" label="2">备选项</el-radio>
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</template>
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<script>
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export default {
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data () {
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return {
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radio: '1'
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};
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}
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}
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</script>
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<!--
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<setup>
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import { ref } from 'vue'
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export default {
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setup() {
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const radio = ref('1');
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return { radio }
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}
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}
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</setup>
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-->
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```
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:::
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### 禁用状态
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单选框不可用的状态。
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:::demo 只要在`el-radio`元素中设置`disabled`属性即可，它接受一个`Boolean`，`true`为禁用。
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```html
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<template>
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<el-radio disabled v-model="radio" label="禁用">备选项</el-radio>
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<el-radio disabled v-model="radio" label="选中且禁用">备选项</el-radio>
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</template>
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<script>
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export default {
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data () {
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return {
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radio: '选中且禁用'
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};
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}
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}
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</script>
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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radio: ref('选中且禁用'),
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};
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},
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});
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</setup>
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-->
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```
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:::
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### 单选框组
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适用于在多个互斥的选项中选择的场景
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:::demo 结合`el-radio-group`元素和子元素`el-radio`可以实现单选组，在`el-radio-group`中绑定`v-model`，在`el-radio`中设置好`label`即可，无需再给每一个`el-radio`绑定变量，另外，还提供了`change`事件来响应变化，它会传入一个参数`value`。
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```html
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<template>
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<el-radio-group v-model="radio">
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<el-radio :label="3">备选项</el-radio>
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<el-radio :label="6">备选项</el-radio>
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<el-radio :label="9">备选项</el-radio>
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</el-radio-group>
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</template>
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<script>
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export default {
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data () {
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return {
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radio: 3
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};
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}
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}
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</script>
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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radio: ref(3),
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};
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},
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});
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</setup>
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-->
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```
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:::
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### 按钮样式
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按钮样式的单选组合。
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:::demo 只需要把`el-radio`元素换成`el-radio-button`元素即可，此外，Element Plus 还提供了`size`属性。
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```html
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<template>
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<div>
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<el-radio-group v-model="radio1">
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<el-radio-button label="上海"></el-radio-button>
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<el-radio-button label="北京"></el-radio-button>
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<el-radio-button label="广州"></el-radio-button>
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<el-radio-button label="深圳"></el-radio-button>
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</el-radio-group>
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</div>
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<div style="margin-top: 20px">
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<el-radio-group v-model="radio2" size="medium">
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<el-radio-button label="上海" ></el-radio-button>
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<el-radio-button label="北京"></el-radio-button>
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<el-radio-button label="广州"></el-radio-button>
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<el-radio-button label="深圳"></el-radio-button>
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</el-radio-group>
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</div>
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<div style="margin-top: 20px">
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<el-radio-group v-model="radio3" size="small">
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<el-radio-button label="上海"></el-radio-button>
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<el-radio-button label="北京" disabled ></el-radio-button>
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<el-radio-button label="广州"></el-radio-button>
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<el-radio-button label="深圳"></el-radio-button>
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</el-radio-group>
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</div>
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<div style="margin-top: 20px">
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<el-radio-group v-model="radio4" disabled size="mini">
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<el-radio-button label="上海"></el-radio-button>
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<el-radio-button label="北京"></el-radio-button>
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<el-radio-button label="广州"></el-radio-button>
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<el-radio-button label="深圳"></el-radio-button>
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</el-radio-group>
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</div>
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</template>
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<script>
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export default {
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data () {
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return {
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radio1: '上海',
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radio2: '上海',
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radio3: '上海',
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radio4: '上海'
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};
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}
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}
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</script>
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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radio1: ref('上海'),
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radio2: ref('上海'),
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radio3: ref('上海'),
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radio4: ref('上海'),
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};
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},
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});
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</setup>
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-->
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```
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:::
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### 带有边框
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:::demo 设置`border`属性可以渲染为带有边框的单选框。
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```html
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<template>
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<div>
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<el-radio v-model="radio1" label="1" border>备选项1</el-radio>
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<el-radio v-model="radio1" label="2" border>备选项2</el-radio>
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</div>
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<div style="margin-top: 20px">
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<el-radio v-model="radio2" label="1" border size="medium">备选项1</el-radio>
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<el-radio v-model="radio2" label="2" border size="medium">备选项2</el-radio>
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</div>
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<div style="margin-top: 20px">
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<el-radio-group v-model="radio3" size="small">
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<el-radio label="1" border>备选项1</el-radio>
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<el-radio label="2" border disabled>备选项2</el-radio>
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</el-radio-group>
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</div>
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<div style="margin-top: 20px">
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<el-radio-group v-model="radio4" size="mini" disabled>
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<el-radio label="1" border>备选项1</el-radio>
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<el-radio label="2" border>备选项2</el-radio>
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</el-radio-group>
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</div>
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</template>
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<script>
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export default {
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data () {
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return {
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radio1: '1',
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radio2: '1',
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radio3: '1',
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radio4: '1'
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};
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}
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}
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</script>
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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radio1: ref('1'),
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radio2: ref('1'),
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radio3: ref('1'),
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radio4: ref('1'),
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};
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},
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});
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</setup>
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-->
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```
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:::
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### Radio Attributes
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|---------- |-------- |---------- |------------- |-------- |
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| model-value / v-model | 绑定值 | string / number / boolean | — | — |
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| label | Radio 的 value | string / number / boolean | — | — |
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| disabled | 是否禁用 | boolean | — | false |
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| border | 是否显示边框 | boolean | — | false |
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| size | Radio 的尺寸，仅在 border 为真时有效 | string | medium / small / mini | — |
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| name | 原生 name 属性 | string | — | — |
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### Radio Events
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| 事件名称 | 说明 | 回调参数 |
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|---------- |-------- |---------- |
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| change | 绑定值变化时触发的事件 | 选中的 Radio label 值 |
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### Radio-group Attributes
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|---------- |-------- |---------- |------------- |-------- |
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| model-value / v-model | 绑定值 | string / number / boolean | — | — |
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| size | 单选框组尺寸，仅对按钮形式的 Radio 或带有边框的 Radio 有效 | string | medium / small / mini | — |
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| disabled | 是否禁用 | boolean | — | false |
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| text-color | 按钮形式的 Radio 激活时的文本颜色 | string | — | #ffffff |
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| fill | 按钮形式的 Radio 激活时的填充色和边框色 | string | — | #409EFF |
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### Radio-group Events
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| 事件名称 | 说明 | 回调参数 |
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|---------- |-------- |---------- |
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| change | 绑定值变化时触发的事件 | 选中的 Radio label 值 |
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### Radio-button Attributes
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|---------- |-------- |---------- |------------- |-------- |
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| label | Radio 的 value | string / number | — | — |
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| disabled | 是否禁用 | boolean | — | false |
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| name | 原生 name 属性 | string | — | — |
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