<view class="richText">
  <rich-text nodes="{{richTextHTML}}"   bindtap="tap"></rich-text>
</view>

  onShow: function () {
     var self = this;
     self.data.richTextHTML = self.data.richTextHTML.replace(/\<img/g, '<img style="width:100%;height:auto;display:block"')
     .replace(/em;/g,'rpx;')
    .replace(/<section/g, '<div').replace(/\/section>/g, '/div>');
   
    self.setData({
      richTextHTML: self.data.richTextHTML
    })
  },