微信小程序选项卡demo

页面

<view>
  <view class="tabbox">
    <view class="tabbox_children {
   
   {item.flag==true? 'active':''}}" wx:for="{
   
   {list}}" wx:key='id' bindtap="clickitem"
      data-id='{
   
   {item.id}}'>
      {
   
   {item.name}}
    </view>
  </view>
  <view class="content" wx:if="{
   
   {list[0].flag}}">过去</view>
  <view class="content" wx:if="{
   
   {list[1].flag}}">现在</view>
  <view class="content" wx:if="{
   
   {list[2].flag}}">未来</view>
</view>

css样式

.tabbox{
  display: flex;

}
.tabbox_children{
  flex: 1;
  padding: 20rpx;
  text-align: center;
}
.active{
  color: coral;
  border-bottom: 4rpx solid #FF0000 ;
}

js

    clickitem(e) {
      console.log(e);
      let id = e.currentTarget.dataset.id;
      let {list} = this.data;
      list.forEach(item => {
        if(item.id === id){
          item.flag=true;
        }else{
          item.flag=false;
        }
      })
      this.setData({
        list
      })
    }

效果图