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  | export default { 
 |      props: { 
 |          // 是否展示picker弹窗 
 |          show: { 
 |              type: Boolean, 
 |              default: uni.$u.props.picker.show 
 |          }, 
 |          // 是否展示顶部的操作栏 
 |          showToolbar: { 
 |              type: Boolean, 
 |              default: uni.$u.props.picker.showToolbar 
 |          }, 
 |          // 顶部标题 
 |          title: { 
 |              type: String, 
 |              default: uni.$u.props.picker.title 
 |          }, 
 |          // 对象数组,设置每一列的数据 
 |          columns: { 
 |              type: Array, 
 |              default: uni.$u.props.picker.columns 
 |          }, 
 |          // 是否显示加载中状态 
 |          loading: { 
 |              type: Boolean, 
 |              default: uni.$u.props.picker.loading 
 |          }, 
 |          // 各列中,单个选项的高度 
 |          itemHeight: { 
 |              type: [String, Number], 
 |              default: uni.$u.props.picker.itemHeight 
 |          }, 
 |          // 取消按钮的文字 
 |          cancelText: { 
 |              type: String, 
 |              default: uni.$u.props.picker.cancelText 
 |          }, 
 |          // 确认按钮的文字 
 |          confirmText: { 
 |              type: String, 
 |              default: uni.$u.props.picker.confirmText 
 |          }, 
 |          // 取消按钮的颜色 
 |          cancelColor: { 
 |              type: String, 
 |              default: uni.$u.props.picker.cancelColor 
 |          }, 
 |          // 确认按钮的颜色 
 |          confirmColor: { 
 |              type: String, 
 |              default: uni.$u.props.picker.confirmColor 
 |          }, 
 |          // 每列中可见选项的数量 
 |          visibleItemCount: { 
 |              type: [String, Number], 
 |              default: uni.$u.props.picker.visibleItemCount 
 |          }, 
 |          // 选项对象中,需要展示的属性键名 
 |          keyName: { 
 |              type: String, 
 |              default: uni.$u.props.picker.keyName 
 |          }, 
 |          // 是否允许点击遮罩关闭选择器 
 |          closeOnClickOverlay: { 
 |              type: Boolean, 
 |              default: uni.$u.props.picker.closeOnClickOverlay 
 |          }, 
 |          // 各列的默认索引 
 |          defaultIndex: { 
 |              type: Array, 
 |              default: uni.$u.props.picker.defaultIndex 
 |          }, 
 |          // 是否在手指松开时立即触发 change 事件。若不开启则会在滚动动画结束后触发 change 事件,只在微信2.21.1及以上有效 
 |          immediateChange: { 
 |              type: Boolean, 
 |              default: uni.$u.props.picker.immediateChange 
 |          } 
 |      } 
 |  } 
 |  
  |