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这篇文章给大家分享的是有关Reactjs如何实现通用分页组件的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。
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大家多少都自己写过各种版本的分页工具条吧,像纯服务版的,纯jsWeb板的,Angular版的,因为这个基础得不能再基础的功能太多地方都会用到,下面我给出以个用ReactJS实现的版本,首先上图看下效果:
注意这个组件需要ES6环境,最好使用NodeJS结合Webpack来打包:webpack --display-error-details --config webpack.config.js
此React版分页组件请亲们结合redux来使用比较方便,UI = Fn(State)
基本流程就是:用户交互->Action->Reduce->Store->UIRender
了解以上基础知识却非常必要,但不是我此次要说的重点,以上相关知识请各位自行补脑,废话就不多说,直接上代码。
filename: paging-bar.js
import React, { Component } from 'react' import Immutable from 'immutable' import _ from 'lodash' /* ================================================================================ * React GrxPagingBar 通用分页组件 * author: 天真的好蓝啊 * ================================================================================ */ class GrxPagingBar extends Component { render() { var pagingOptions = { showNumber: 5, firstText: "<<", firstTitle: "第一页", prevText: "<", prevTitle: "上一页", beforeTitle: "前", afterTitle: "后", pagingTitle: "页", nextText: ">", nextTitle: "下一页", lastText: ">>", lastTitle: "最后一页", classNames: "grx-pagingbar pull-right", } $.extend(pagingOptions, this.props.pagingOptions) return () } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 分页条头组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ class GrxPagingFirst extends Component { render() { var ids = [] let paging = this.props.items.get('Paging') let current = paging.get('PagingIndex') let pagingIndex = current - 1 if(paging.get('PagingIndex') != 1){ ids.push(1) } let html = ids.map( (v,i) =>) return ( {html} ) } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 分页条前后页组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ class GrxPagingBeforeAfter extends Component { render() { var ids = [] let isBefore = this.props.isBefore == "true" ? true : false let paging = this.props.items.get('Paging') let pagingCount = paging.get('PagingCount') let current = paging.get('PagingIndex') let pagingIndex = isBefore ? current - this.props.showNumber : current + this.props.showNumber let title = (isBefore ? this.props.beforeTitle : this.props.afterTitle) + (this.props.showNumber + 1) + this.props.pagingTitle if(isBefore && current > this.props.showNumber + 1){ ids.push(1) }else if(!isBefore && current < pagingCount - this.props.showNumber){ ids.push(1) } var html = ids.map( (v,i) => .. ) return ( {html} ) } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 分页条页码列表组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ class GrxPagingList extends Component { render(){ let paging = this.props.items.get('Paging') let count = paging.get('PagingCount') let current = paging.get('PagingIndex') let start = current - this.props.showNumber let end = current + this.props.showNumber var pageIndexs = new Array(); for(var i = start; i < end; i ++) { if( i == current){ pageIndexs.push(i) }else if(i > 0 & i <= count) { pageIndexs.push(i) } } var pagingList = pageIndexs.map( (v,i) => current == v ? count > 1 ? {v} : "" : ) return( {pagingList} ) } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 分页条尾部组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ class GrxPagingLast extends Component { render() { var ids = [] let paging = this.props.items.get('Paging') let pagingCount = paging.get('PagingCount') let current = paging.get('PagingIndex') let pagingIndex = current + 1 if(paging.get('PagingIndex') < paging.get('PagingCount')){ ids.push(1) } let html = ids.map( (v,i) => ) return ( {html} ) } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 分页页码组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ class GrxPagingNumber extends Component { render(){ let pagingIndex = this.props.pagingIndex let title = "第"+ pagingIndex + this.props.pagingTitle let text = pagingIndex if(this.props.title){ title = this.props.title } if(this.props.text){ text = this.props.text } return( {text} ) } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 分页条信息组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ class GrxPagingInfo extends Component { render() { let paging = this.props.items.get('Paging') let pagingIndex = paging.get('PagingIndex') let pagingCount = paging.get('PagingCount') let totalRecord = paging.get('TotalRecord') return ( 第{pagingIndex}/{pagingCount}页,共{totalRecord}条数据 ) } } /* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * 从此模块导出分页条组件 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ export default GrxPagingBar 使用方法: import React, { Component } from 'react' import _ from 'lodash' import classNames from 'classnames' import PagingBar from '.paging-bar' /* ================================================================================ * React PagingBar使用范例组件 * ================================================================================ */ class PagingBarExample extends Component { render() { let pagingOptions = { showNumber: 3 } return (
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附上Paging这个分页数据对象的结构paging.go服务端的Data Struct:
package commons import ( "math" ) type ( Paging struct { PagingIndex int64 PagingSize int64 TotalRecord int64 PagingCount int64 Sortorder string } ) func (paging *Paging) SetTotalRecord(totalRecord int64) { //paging.PagingIndex = 1 paging.PagingCount = 0 if totalRecord > 0 { paging.TotalRecord = totalRecord paging.PagingCount = int64(math.Ceil(float64(paging.TotalRecord) / float64(paging.PagingSize))) } } func (paging *Paging) Offset() int64 { if paging.PagingIndex <= 1 || paging.PagingSize == 0 { return 0 } offset := (paging.PagingIndex * paging.PagingSize) - paging.PagingSize + 1 return offset } func (paging *Paging) EndIndex() int64 { if paging.PagingIndex <= 1 { return paging.PagingSize } offset := paging.PagingIndex * paging.PagingSize return offset }
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