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分页器组件，文档页面如下：
组件封装代码如下：
import React, { useState, useEffect, FC, useMemo, memo } from 'react';
import { EllipsisOutlined, LeftOutlined, RightOutlined, DownOutlined } from '@ant-design/icons';
import { Select } from '..';
import style from './index.module.less'
interface PaginationProps {
/**
* @description 总数据条数
* @default 0
*/
total: number
/**
* @description 显示每页条数Select
* @default false
*/
showSizeChanger?: Boolean
/**
* @description 每页条数配置
* @default 每页10条数据
*/
pageSizeOptions?: Array<number>
/**
* @description 改变页码后的回调
* @default {}
*/
showJumpInput?: Boolean
/**
* @description 显示跳转页面输入框
* @default false
*/
changePageCallback: Function
}
const Pagination: FC<PaginationProps> = (props) => {
const { changePageCallback, total, pageSizeOptions, showJumpInput, showSizeChanger } = props
const [nowIndex, setNowIndex] = useState<number>(1);
const [pageRenderArray, setPageRenderArray] = useState<Array<number>>([]);
const [sizePage, setSizePage] = useState<number>(pageSizeOptions ? pageSizeOptions[0] : 10)
const [showSizeOptions, setShowSizeOptions] = useState(false);
const totalPage = useMemo(() => {
setNowIndex(1)
if (Math.ceil(total / sizePage) > 6) {
setPageRenderArray([2, 3, 4, 5, 6])
} else {
if (Math.ceil(total / sizePage) > 2) {
const array = new Array(Math.ceil(total / sizePage) as number - 2).fill(0);
array.forEach((item, index) => {
array[index] = index + 2;
})
setPageRenderArray(array)
} else {
setPageRenderArray([])
}
}
return Math.ceil(total / sizePage)
}, [total, sizePage])
useEffect(() => {
console.log(typeof nowIndex)
}, [nowIndex])
//点击改页码
const changePage = (pageNum: number) => {
return () => {
//小型分页器
if (totalPage <= 6) {
changePageCallback(pageNum)
return setNowIndex(pageNum)
}
if (pageNum > 4 && pageNum <= totalPage - 4) {
setPageRenderArray([pageNum - 2, pageNum - 1, pageNum, pageNum + 1, pageNum + 2])
}
//页码为1的情况
if (pageNum <= 4) {
setPageRenderArray([2, 3, 4, 5, 6])
}
//页码到倒数第四页内的情况
if (pageNum > totalPage - 4) {
setPageRenderArray([totalPage - 5, totalPage - 4, totalPage - 3, totalPage - 2, totalPage - 1])
}
setNowIndex(pageNum)
changePageCallback(pageNum)
}
}
//向前翻一页
const prevPage = () => {
if (nowIndex === 1) {
return;
}
setNowIndex(nowIndex - 1);
if (totalPage > 6) {
if (nowIndex > totalPage - 3) {
return
} else if (nowIndex > 4) {
setPageRenderArray(pageRenderArray.map(item => {
return item - 1;
}))
} else if (nowIndex - 5 <= 4) { //开头几页翻页的情况，回到第一页
setPageRenderArray([2, 3, 4, 5, 6])
}
}
changePageCallback(nowIndex - 1);
}
//向后翻一页
const nextPage = () => {
if (nowIndex === totalPage) {
return;
}
setNowIndex(nowIndex + 1);
if (totalPage > 6) {
if (nowIndex + 5 > totalPage) {
setPageRenderArray([totalPage - 5, totalPage - 4, totalPage - 3, totalPage - 2, totalPage - 1])
}
else if (nowIndex < 4) {
return
} else if (nowIndex + 5 < totalPage) {
setPageRenderArray(pageRenderArray.map(item => {
return item + 1;
}))
}
}
changePageCallback(nowIndex + 1)
}
//向前翻五页
const prevFivePage = () => {
var updateIndex: number = 0;
if (nowIndex - 5 <= 4) { //开头几页翻页的情况，回到第一页
setPageRenderArray([2, 3, 4, 5, 6])
updateIndex = nowIndex - 5 <= 1 ? 1 : nowIndex - 5
}
else if (nowIndex + 5 > totalPage) {
setPageRenderArray([nowIndex - 7, nowIndex - 6, nowIndex - 5, nowIndex - 4, nowIndex - 3])
updateIndex = nowIndex - 5;
}
else if (nowIndex - 5 > 4) { //中间翻页的情况
setPageRenderArray(pageRenderArray.map(item => {
return item - 5;
}))
updateIndex = nowIndex - 5;
}
setNowIndex(updateIndex);
changePageCallback(updateIndex);
}
//向后翻五页
const nextFivePage = () => {
var updateIndex: number = 0;
if (nowIndex + 7 >= totalPage) {
setPageRenderArray([totalPage - 5, totalPage - 4, totalPage - 3, totalPage - 2, totalPage - 1]);
updateIndex = nowIndex + 5 > totalPage ? totalPage : nowIndex + 5;
}
else if (nowIndex - 5 < 0) {
setPageRenderArray([nowIndex + 3, nowIndex + 4, nowIndex + 5, nowIndex + 6, nowIndex + 7])
updateIndex = nowIndex + 5;
}
else if (nowIndex + 5 < totalPage) {
setPageRenderArray(pageRenderArray.map(item => {
return item + 5;
}))
updateIndex = nowIndex + 5;
}
setNowIndex(updateIndex)
changePageCallback(updateIndex)
}
//跳页
const jumpPageNum = (e: any) => {
if (e.keyCode === 13) {
const jumpPage = Number(e.target.value);
if (jumpPage > totalPage || jumpPage < 0 || isNaN(jumpPage)) { //超出页码范围，不挑
return e.target.value = '';
}
if (jumpPage > 6 && jumpPage < totalPage - 6) {
setPageRenderArray([jumpPage - 2, jumpPage - 1, jumpPage, jumpPage + 1, jumpPage + 2]);
} else if (jumpPage - 5 < 0) {
setPageRenderArray([2, 3, 4, 5, 6]);
} else if (jumpPage + 5 > totalPage) {
setPageRenderArray([totalPage - 5, totalPage - 4, totalPage - 3, totalPage - 2, totalPage - 1])
}
setNowIndex(jumpPage);
changePageCallback(jumpPage)
e.target.value = '';
}
}
//select回调
const handleSelectCallback = (pageSize: number) => {
setSizePage(pageSize);
}
return (
<div className={style.pagination}>
<div className={nowIndex === 1 ? `${style.prev} ${style.disabled}` : `${style.prev}`} onClick={prevPage}>
<LeftOutlined />
</div>
<div className={nowIndex === 1 ? `${style.actived} ${style.numberBox}` : `${style.numberBox}`} onClick={changePage(1)}>
1
</div>
{
nowIndex > 4 && totalPage > 6
&&
<div className={style.numberBox} onClick={prevFivePage}><EllipsisOutlined /></div>
}
{(totalPage <= 4 && pageRenderArray.length >= 1)
&&
pageRenderArray.map(index => {
return (
<div
className={nowIndex === index + 2 ? `${style.actived} ${style.numberBox}` : `${style.numberBox}`}
key={index}
onClick={changePage(index + 2)}>
{index + 2}
</div>
)
})}
{
totalPage > 4
&&
pageRenderArray.map((item, index) => {
{
return (
<div
className={nowIndex === item
?
`${style.actived} ${style.numberBox}`
:
`${style.numberBox}`}
key={index}
onClick={changePage(item)}>
{item}
</div>
)
}
})
}
{
totalPage - nowIndex >= 4 && totalPage > 6
&&
<div
className={style.numberBox}
onClick={nextFivePage}><EllipsisOutlined /></div>
}
{
totalPage > 1
&&
<div
className={nowIndex === totalPage
?
`${style.actived} ${style.numberBox}`
:
`${style.numberBox}`}
onClick={changePage(totalPage)}>
{totalPage}
</div>
}
<div className={nowIndex === totalPage || totalPage <= 1
?
`${style.next} ${style.disabled}`
:
`${style.next}`}
onClick={nextPage}>
<RightOutlined />
</div>
{/* {
Array.isArray(pageSizeOptions) && showSizeChanger
&&
<div className={style.pageSizeSelect} onClick={() => setShowSizeOptions(!showSizeOptions)}>
<>
<span className={style.size}>{sizePage} 条/页</span>
<DownOutlined />
</>
{
showSizeOptions
&&
<div className={style.options}>
{
pageSizeOptions.map(s => {
return (
<div key={s as number} className={style.option} onClick={() => setSizePage(s as number)}>
{s} 条/页
</div>
)
})
}
</div>
}
</div>
} */}
{
Array.isArray(pageSizeOptions) && showSizeChanger
&&
<Select
option={pageSizeOptions.map(item => {
return (
{
label: `${item} 条/页`,
value: item
}
)
})}
width={100}
handleSelectCallback={handleSelectCallback}/>
}
{
showJumpInput
&&
<div className={style.jumpBox}>
<span>跳至</span>
<input type="text" className={style.jump} onKeyUp={jumpPageNum}></input>
<span>页</span>
</div>
}
</div>
)
}
export default memo(Pagination);
- Concis组件库线上链接：react-view-ui.com:92
- github：github.com/fengxinhhh/…
- npm：www.npmjs.com/package/con…
