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小莫唐尼
139 lines
3.7 KiB
Markdown
139 lines
3.7 KiB
Markdown
# radio
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## Instructions
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单项选择器，内部由多个 <radio> 组成。通过把多个 radio 包裹在一个 radio-group 下，实现这些 radio 的单选。
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属性说明
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单选项目。
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### Syntax
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- 使用 `<radio />`（或 `<radio></radio>`，当需要包裹子节点时）。
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- 遇到平台差异时，建议使用条件编译（`#ifdef / #endif`）显式处理。
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#### Properties
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See official docs for full properties list: `https://doc.dcloud.net.cn/uni-app-x/component/radio.html`
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#### Events
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| 事件名 | 类型 | 默认值 | 说明 |
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| --- | --- | --- | --- |
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| @change | EventHandle | | <radio-group> 中的选中项发生变化时触发 change 事件，event.detail = {value: 选中项radio的value} |
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#### Platform Compatibility
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See official docs for platform support table: `https://doc.dcloud.net.cn/uni-app-x/component/radio.html`
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### Examples
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### Example (Example 1)
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```vue
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<!-- 本示例未包含完整css，获取外链css请参考上文，在hello uni-app项目中查看 -->
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<template>
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<view>
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<view class="uni-padding-wrap">
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<view class="uni-title">默认样式</view>
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<view>
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<label class="radio"><radio value="r1" :checked="true" />选中</label>
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<label class="radio"><radio value="r2" />未选中</label>
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</view>
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</view>
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<view class="uni-title uni-common-mt uni-common-pl">推荐展示样式</view>
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<view class="uni-list">
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<radio-group @change="radioChange">
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<label class="uni-list-cell uni-list-cell-pd" v-for="(item, index) in items" :key="item.value">
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<view>
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<radio :value="item.value" :checked="index === current" />
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</view>
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<view>{{item.name}}</view>
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</label>
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</radio-group>
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</view>
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</view>
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</template>
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```
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### Example (Example 2)
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```vue
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<!-- 本示例未包含完整css，获取外链css请参考上文，在hello uni-app项目中查看 -->
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<template>
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<view>
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<view class="uni-padding-wrap">
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<view class="uni-title">默认样式</view>
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<view>
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<label class="radio"><radio value="r1" :checked="true" />选中</label>
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<label class="radio"><radio value="r2" />未选中</label>
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</view>
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</view>
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<view class="uni-title uni-common-mt uni-common-pl">推荐展示样式</view>
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<view class="uni-list">
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<radio-group @change="radioChange">
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<label class="uni-list-cell uni-list-cell-pd" v-for="(item, index) in items" :key="item.value">
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<view>
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<radio :value="item.value" :checked="index === current" />
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</view>
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<view>{{item.name}}</view>
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</label>
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</radio-group>
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</view>
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</view>
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</template>
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```
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### Example (Example 3)
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```vue
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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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items: [{
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value: 'USA',
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name: '美国',
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checked: 'true'
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},
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{
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value: 'CHN',
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name: '中国'
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},
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{
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value: 'BRA',
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name: '巴西'
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},
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{
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value: 'JPN',
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name: '日本'
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},
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{
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value: 'ENG',
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name: '英国'
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},
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{
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value: 'FRA',
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name: '法国'
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},
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],
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current: 0
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}
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},
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methods: {
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radioChange: function(evt) {
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for (let i = 0; i < this.items.length; i++) {
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if (this.items[i].value === evt.detail.value) {
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this.current = i;
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break;
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}
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}
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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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Reference: [Official Documentation](https://doc.dcloud.net.cn/uni-app-x/component/radio.html)
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