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263 lines
4.8 KiB
Markdown
263 lines
4.8 KiB
Markdown
# label 组件示例
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## 官方文档
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参考官方文档:https://uniapp.dcloud.net.cn/component/label.html
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## 概述
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`label` 是标签组件,用于改进表单组件的可用性。
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## 基础用法
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```vue
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<template>
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<label>
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<checkbox value="option1" />
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<text>选项1</text>
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</label>
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</template>
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```
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## 完整示例
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### 示例 1: 配合 checkbox 使用
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```vue
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<template>
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<view class="container">
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<checkbox-group @change="handleChange">
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<label class="checkbox-label">
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<checkbox value="option1" />
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<text>选项1</text>
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</label>
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<label class="checkbox-label">
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<checkbox value="option2" />
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<text>选项2</text>
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</label>
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<label class="checkbox-label">
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<checkbox value="option3" />
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<text>选项3</text>
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</label>
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</checkbox-group>
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</view>
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</template>
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<script>
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export default {
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methods: {
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handleChange(e) {
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console.log('选中的值', e.detail.value)
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}
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}
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}
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</script>
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<style>
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.checkbox-label {
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display: flex;
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align-items: center;
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padding: 20px;
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border-bottom: 1px solid #eee;
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}
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</style>
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```
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### 示例 2: 配合 radio 使用
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```vue
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<template>
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<view class="container">
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<radio-group @change="handleChange">
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<label class="radio-label">
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<radio value="male" />
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<text>男</text>
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</label>
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<label class="radio-label">
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<radio value="female" />
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<text>女</text>
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</label>
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</radio-group>
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</view>
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</template>
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<script>
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export default {
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methods: {
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handleChange(e) {
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console.log('选中的值', e.detail.value)
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}
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}
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}
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</script>
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<style>
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.radio-label {
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display: flex;
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align-items: center;
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padding: 20px;
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border-bottom: 1px solid #eee;
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}
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</style>
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```
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### 示例 3: 配合 switch 使用
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```vue
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<template>
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<view class="container">
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<label class="switch-label">
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<text>开启通知</text>
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<switch :checked="notifyEnabled" @change="handleSwitchChange" />
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</label>
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</view>
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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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notifyEnabled: false
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}
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},
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methods: {
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handleSwitchChange(e) {
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this.notifyEnabled = e.detail.value
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}
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}
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}
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</script>
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<style>
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.switch-label {
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display: flex;
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justify-content: space-between;
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align-items: center;
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padding: 20px;
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}
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</style>
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```
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### 示例 4: 配合 input 使用
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```vue
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<template>
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<view class="container">
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<label class="input-label">
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<text>用户名:</text>
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<input v-model="username" placeholder="请输入用户名" />
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</label>
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<label class="input-label">
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<text>密码:</text>
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<input v-model="password" type="password" placeholder="请输入密码" />
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</label>
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</view>
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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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username: '',
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password: ''
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}
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}
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}
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</script>
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<style>
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.input-label {
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display: flex;
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align-items: center;
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padding: 20px;
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border-bottom: 1px solid #eee;
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}
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</style>
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```
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### 示例 5: 表单列表
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```vue
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<template>
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<view class="container">
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<view class="form-list">
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<label class="form-item">
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<text class="label-text">同意协议</text>
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<checkbox value="agree" />
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</label>
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<label class="form-item">
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<text class="label-text">接收通知</text>
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<switch :checked="notifyEnabled" @change="notifyEnabled = $event.detail.value" />
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</label>
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<label class="form-item">
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<text class="label-text">性别</text>
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<radio-group>
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<radio value="male" />男
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<radio value="female" />女
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</radio-group>
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</label>
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</view>
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</view>
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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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notifyEnabled: false
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}
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}
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}
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</script>
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<style>
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.form-list {
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padding: 20px;
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}
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.form-item {
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display: flex;
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justify-content: space-between;
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align-items: center;
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padding: 20px 0;
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border-bottom: 1px solid #eee;
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}
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.label-text {
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font-size: 32rpx;
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color: #333;
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}
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</style>
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```
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## 属性说明
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| 属性名 | 类型 | 默认值 | 说明 |
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|--------|------|--------|------|
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| for | String | - | 绑定控件的 id |
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## 平台兼容性
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| 平台 | 支持情况 |
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|------|---------|
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| H5 | ✅ |
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| 微信小程序 | ✅ |
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| 支付宝小程序 | ✅ |
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| 百度小程序 | ✅ |
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| 字节跳动小程序 | ✅ |
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| QQ 小程序 | ✅ |
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| 快手小程序 | ✅ |
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| App | ✅ |
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| 快应用 | ✅ |
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## 注意事项
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1. `label` 用于改进表单组件的可用性
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2. 点击 `label` 内的文本可以触发关联的表单控件
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3. 可以配合 `checkbox`、`radio`、`switch`、`input` 等使用
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4. 建议使用 `label` 包裹表单控件和文本
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## 参考资源
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- **官方文档**: https://uniapp.dcloud.net.cn/component/label.html
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- **复选框**: https://uniapp.dcloud.net.cn/component/checkbox.html
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- **单选框**: https://uniapp.dcloud.net.cn/component/radio.html
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