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微信小程序实现固定表头、列表格组件

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

需求：

微信小程序实现固定表头固定列表格组件（移动端做点小修改通用）

功能点

  • 排序表格
  • 表头可固定
  • 首列固定(可以优化成可以配置指定列左侧右侧固定)
  • 翻页(上拉加载)监听

效果图

实现思路

开始想用三个ScrollView去实现滚动联动，固定表头、列的话，表格内容滚动表头、列也应该对应滚动，写了demo后发现监听一个ScrollView的位置信息去设置另外两个ScrollView的位置真机会很卡，体验极差
使用position：sticky; 让表头相对表格顶部sticky，每行的第一个元素相对当前行左侧sticky。

遇到的问题：

  • 表格左滑的时候，滑动一个屏幕后固定列跟着滑出屏幕了。解决方法：动态设置表格的宽度，原理：滑出去的原因是整行滑出屏幕了，而sticky是相对整行左侧定位的。
  • 表格高度设置为100%后useReachBottom上拉监听失效 将表格高度设高的话固定表头就失效了。解决方法：表格用ScrollView套一层使用onScrollToLower监听加载

具体代码(react\taro3.0)

index.tsx

/**
 * 可滑动、固定表头、固定列表格组件
 * @example <Table data={data} dataAttribute={dataAttribute} sortTypeChange={sortTypeChange} handleRow={toDetails}/>
 */

import React, { useState, useMemo, useEffect } from 'react'
import classNames from 'classnames'

// components
import { View, Text, ScrollView } from '@tarojs/components'

// utils
import { noop } from '@/utils/util'

// styles
import styles from './index.module.less'

interface DataAttributeItem {
  title: string
  key: string | number
  sortKey?: string | number
}

interface Props {
  data: Array<any>
  dataAttribute: Array<DataAttributeItem>
  sortTypeChange?: (sort_item_id: any, sort_desc: boolean) => void
  handleRow?: (data: any) => void
  handleScrollToLower?: (e: any) => void
}

export default function Table(props: Props) {
  const { data, dataAttribute, sortTypeChange = noop, handleRow = noop, handleScrollToLower = noop } = props
  const [isSortDesc, setIsSortDesc] = useState<boolean>(true)
  const [sortIndex, setSortIndex] = useState<number>(1)
  const tableWidth = useMemo(() => {
    return `${(dataAttribute.length * 148 + 48)}rpx`
  }, [dataAttribute])

  const tableHeight =  useMemo(() => {
    return `${((data.length + 1) * 96)}rpx`
  }, [data])

  const handleSortItem = (attrItem, attrIndex) => {
    if (attrIndex === 0) {
      return
    }
    const beforeIndex = sortIndex
    const sortKey = attrItem.sortKey
    dataAttribute.map((item, index)=>{
      if (item.sortKey === sortKey) {
        if (beforeIndex === index) {
          setIsSortDesc(!isSortDesc)
        } else {
          setSortIndex(index)
          setIsSortDesc(true)
        }
      }
    })
  }

  useEffect(()=>{
    const sort_desc = isSortDesc
    const sort_item_id = dataAttribute[sortIndex].sortKey
    sortTypeChange(sort_item_id,sort_desc)
  },[sortIndex, isSortDesc])


  return (
    <ScrollView className={styles['table']} scrollY scrollX onScrollToLower={handleScrollToLower}>
      <View className={styles['sticky-box']} style={{height: tableHeight}}>
        <View className={styles['grey-box']} style={{width: tableWidth, position: 'sticky'}}/>
        <View className={styles['table__head']} style={{width: tableWidth, position: 'sticky'}}>
          {dataAttribute.map((attrItem, attrIndex) => (
            <View className={styles['table__head__td']} key={attrIndex} onClick={()=>handleSortItem(attrItem, attrIndex)}>
              <Text
                className={classNames({
                  [styles['table__head__td__text']]: true,
                  [styles['table__head__td__text-active']]: sortIndex === attrIndex,
                })}
                key={attrIndex}
              >{attrItem.title}</Text>
              {attrIndex !== 0 && <View
                className={classNames({
                  [styles['table__head__td__sorter-indicate']]: true,
                  [styles['table__head__td__sorter-indicate--asc-active']]: sortIndex === attrIndex && !isSortDesc,
                  [styles['table__head__td__sorter-indicate--desc-active']]: sortIndex === attrIndex && isSortDesc
                })}
              />}
            </View>
          ))}
        </View>
        {data.map((dataItem, dataIndex) => (
          <View className={styles['table__row']} key={dataIndex} style={{width: tableWidth}} onClick={() => handleRow(dataItem)}>
            {dataAttribute.map((attrItem, attrIndex) => {
              return (
                <Text className={styles['table__row__td']} key={attrIndex}>{dataItem[attrItem.key] || '-'}</Text>
              )
            })}
          </View>
        ))}
      </View>
    </ScrollView>
  )
}

index.module.less

@import '~@/assets/style/mixins/ellipsis.less';
page{
  font-size: 26rpx;
  line-height: 60rpx;
  color: #222;
  height: 100%;
  width: 100%;
}
.grey-box{
  height: 10rpx;
  top: 0;
  background: #f8f8f8;
  z-index: 100;
}
.table{
  position: relative;
  overflow: scroll;
  width: 100%;
  height: 100%;
  overflow: scroll;
  &__head{
    position: relative;
    height: 96rpx;
    white-space: nowrap;
    // position: sticky;
    top: 10rpx;
    z-index: 100;
    height: 88rpx;
    font-size: 24rpx;
    line-height: 88rpx;
    color: #aaabbd;
    background-color: #f8f8f8;
    border-bottom: 2rpx solid #ecf1f8;
    background-color: #fff;
    white-space: nowrap;
    display: flex;
    &__td{
      .ellipsis();
      width: 148rpx;
      // padding-right: 40rpx;
      display: flex;
      justify-content: flex-start;
      align-items: center;
      background-color: #fff;
      position: relative;
      box-sizing: border-box;
      &:nth-child(1) {
        padding-left: 24rpx;
        width: 154rpx;
        margin-right: 40rpx;
        position: sticky;
        z-index: 10;
        left: 0;
      }
      &__text{
        display: inline;
        &-active{
          color: #6d70ff;
        }
      }
      &__sorter-indicate{
        width: 24rpx;
        height: 24rpx;
        display: inline-block;
        background-repeat: no-repeat;
        background-size: 100% 100%;
        background-image: url('https://icon1.png');
        &--asc-active {
          background-image: url('https://icon2.png');
        }
        &--desc-active {
          background-image: url('https://icon3.png');
        }
      }
    }
  }
  &__row{
    position: relative;
    height: 96rpx;
    white-space: nowrap;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    border-bottom: 2rpx solid #ecf1f8;
    &__td{
      // .ellipsis();
      overflow: scroll;
      white-space: nowrap;
      width: 148rpx;
      // padding-right: 40rpx;
      display: inline-block;
      background-color: #fff;
      position: relative;
      box-sizing: border-box;
      font-size: 26rpx;
      line-height: 96rpx;
      &:nth-child(1) {
        margin-right: 40rpx;
        padding-left: 24rpx;
        width: 154rpx;
        position: sticky;
        z-index: 10;
        left: 0;
      }
    }
  }
}

具体代码(小程序原生)

<ScrollView class="table" scroll-x scroll-y bindscrolltolower="handleScrollToLower">
  <View class="sticky-box" style="height:{{tableHeight}}rpx;">
    <View class="table__head" style="width:{{tableWidth}}rpx;">
      <View class="table__head__td" wx:for="{{dataAttribute}}" wx:key="attrIndex" wx:for-index="attrIndex" wx:for-item="attrItem">
        <Text
          class="table__head__td__text"
        >{{attrItem.title}}</Text>
      </View>
    </View>
    <View class="table__row" wx:for="{{data}}" wx:key="dataIndex" wx:for-index="dataIndex" wx:for-item="dataItem" style="width:{{tableWidth}}rpx;">
      <Text class="table__row__td" wx:for="{{dataAttribute}}" wx:key="dataIndex" wx:for-index="attrIndex" wx:for-item="attrItem">{{dataItem[attrItem.key] || '-'}}</Text>
    </View>
  </View>
</ScrollView>

const app = getApp()
Page({
  data: {
    data: [
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
      {
        a: 123,
        b: 456,
        c: 489,
        d: 789,
        e: 458,
        f: 789
      },
    ],
    dataAttribute: [
      {
        title: '第一列',
        key: 'a'
      },
      {
        title: '第2列',
        key: 'b'
      },
      {
        title: '第3列',
        key: 'c'
      },
      {
        title: '第4列',
        key: 'd'
      },
      {
        title: '第5列',
        key: 'e'
      },
      {
        title: '第6列',
        key: 'f'
      }
    ],
    tableHeight: (20 + 1) * 96,
    tableWidth: 200 * 6 + 60
  }
})

page{
  font-size: 26rpx;
  line-height: 60rpx;
  color: #222;
  height: 100%;
  width: 100%;
}
.table{
  display: block;
  position: relative;
  overflow: scroll;
  width: 100%;
  height: 100%;
}
.sticky-box{
}
.table__head{
  height: 96rpx;
  white-space: nowrap;
  position: sticky;
  top: 0rpx;
  z-index: 100;
  height: 88rpx;
  font-size: 24rpx;
  line-height: 88rpx;
  color: #aaabbd;
  background-color: #f8f8f8;
  border-bottom: 2rpx solid #ecf1f8;
  background-color: #fff;
  white-space: nowrap;
  display: flex;
}
.table__head__td{
  width: 200rpx;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  background-color: #fff;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  -o-text-overflow: ellipsis;
  text-overflow: ellipsis;
}
.table__head__td:nth-child(1) {
  padding-left: 24rpx;
  width: 260rpx;
  margin-right: 40rpx;
  position: sticky;
  z-index: 101;
  left: 0rpx;
}
.table__head__td__text{
  display: inline;
}
.table__row{
  position: relative;
  height: 96rpx;
  white-space: nowrap;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  border-bottom: 2rpx solid #ecf1f8;
}
.table__row__td{
  overflow: scroll;
  white-space: nowrap;
  width: 200rpx;
  display: inline-block;
  background-color: #fff;
  box-sizing: border-box;
  font-size: 26rpx;
  line-height: 96rpx;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  -o-text-overflow: ellipsis;
  text-overflow: ellipsis;
}
.table__row__td:nth-child(1) {
  margin-right: 40rpx;
  padding-left: 24rpx;
  width: 260rpx;
  position: sticky;
  z-index: 10;
  left: 0;
}

总结

到此这篇关于微信小程序实现固定表头、列表格组件的文章就介绍到这了,更多相关微信小程序固定表头内容请搜索极客世界以前的文章或继续浏览下面的相关文章希望大家以后多多支持极客世界！

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