<view class='containers'>
    <text class="content {{ellipsis?'ellipsis':'unellipsis'}}">
      {{item.content}}
    text>

    <view bindtap=‘ellipsis’>       <view>         <button>{{ellipsis?‘展开’:‘收起’}}button>       view>     view>   view>

// 展开与收起 ellipsis(e) {   this.setData({     ellipsis:!this.data.ellipsis   }) },

内容是从云开放数据库中获取