小程序分享功能

分享按钮   open-type="share"

   <button open-type="share" type='warn' plain="true" class="radius-xl free-button bg-blue lg margin-top-xl"  bindtap="startShare">开始分享</button>

page页面

  onShareAppMessage: function(res) {
    return {
      title: this.data.selectData.name,
      path: '/pages/document/index/index?id=' + this.data.selectData.id,
      imageUrl:  this.data.selectData.cover
    }
  }