uniapp 下划线

在uniapp中，可以使用CSS样式来创建下划线效果。根据提供的引用内容，可以看到以下代码片段用于创建下划线样式：

<template>
  <view class="cjView">
    <view class="select-view">
      <view class="text-item" @tap="selectItem1('场景一')">
        <text>场景一</text>
        <view class="line-Box" v-if="selectId=='场景一'"></view>
      </view>
      <view class="text-item" @tap="selectItem1('场景二')">
        <text>场景二</text>
        <view class="line-Box1" v-if="selectId=='场景二'"></view>
      </view>
      <view class="text-item" @tap="selectItem1('场景三')">
        <text>场景三</text>
        <view class="line-Box2" v-if="selectId=='场景三'"></view>
      </view>
    </view>
  </view>
</template>

<style>
.line-Box {
  background-color: black;
  width: 40%;
  height: 3rpx;
  margin-top: 5rpx;
  margin-right: 15rpx;
  margin-left: 15rpx;
}

.line-Box1 {
  background-color: black;
  width: 40%;
  height: 3rpx;
  margin-top: 5rpx;
  margin-right: 15rpx;
  margin-left: 15rpx;
}

.line-Box2 {
  background-color: black;
  width: 40%;
  height: 3rpx;
  margin-top: 5rpx;
  margin-right: 15rpx;
  margin-left: 15rpx;
}
</style>

以上代码中，通过给`.line-Box`、`.line-Box1`和`.line-Box2`这三个class添加CSS样式，可以实现宽度为40%、高度为3rpx的黑色下划线效果。这些下划线会根据`v-if`条件判断的结果来控制是否显示在对应的场景中。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* *3* [uni-app学习(四):带有下划线的标签选择](https://blog.csdn.net/weixin_42180036/article/details/114376976)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 100%"]
[ .reference_list ]