uniapp如何设置动态样式

<view>    <view>已上线</view>    <view>未开始</view></view>//选择状态selectState(e){    this.whichSelected=e.currentTarget.dataset.state}.state-btn-content{    //write your style    .state-btn-selected{ ... }    .state-btn-noselect{ ... }}

<view>{{item.name}}</view>.every-sign-item{padding: 4rpx 16rpx;border-radius: 24rpx;font-size: 24rpx;margin-right: 20rpx;margin-bottom: 20rpx;}.signstyle-0{color: #3ac9e3;border: 1px solid #3ac9e3;}.signstyle-1{color: #fd8888;border: 1px solid #fd8888;}.signstyle-2{ ... }.signstyle-3{ ... }.signstyle-4{ ... }.signstyle-5{ ... }