react分页显示 react分页显示数据的方法
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去年年底,尝试着用react写个组件化的页面!
里面有一个list页面弄了一下数据的分页展示
展示一下主要三个组件:父组件listBox、列表组件List、按钮组件PageButton
父组件listBox
const listData = [{ key:"001", idd:"001", title:"webstorm连接github,方便的管理仓库", time:"2016-12-01", tag:" git ", contents:"66666666666666!" }] //等等等多条数据 class listBox extends Component { constructor(props){ super(props); this.pageNext=this.pageNext.bind(this); this.setPage=this.setPage.bind(this); this.state = { indexList:[],//当前渲染的页面数据 totalData:listData, current: 1, //当前页码 pageSize:4, //每页显示的条数 goValue:0, //要去的条数index totalPage:0,//总页数 }; } componentWillMount(){ //设置总页数 this.setState({ totalPage:Math.ceil( this.state.totalData.length/this.state.pageSize), }) this.pageNext(this.state.goValue) } //设置内容 setPage(num){ this.setState({ indexList:this.state.totalData.slice(num,num+this.state.pageSize) }) } pageNext (num) { this.setPage(num) } render() { return ( <div className="main"> <div className="top_bar"> </div> <div className="lists"> <ul className="index"> {this.state.indexList.map(function (cont) { return <List {...cont} /> })} </ul> <PageButton { ...this.state } pageNext={this.pageNext} /> </div> </div> ); } }
列表组件List
class list extends Component { constructor(props) { super(props); } render() { const { idd,title,time,tag,contents } = this.props return ( <li id={idd}> <Link to={`/list/listmore/${idd}`} > <h3>{title}</h3> <div className="icon"> <i className="fa fa-calendar"></i> <span>发表于 {time} </span> <i className="fa fa-sitemap"></i> <span>分类于 {tag} </span> <i className="fa fa-edit"></i> <span>暂无评论</span> </div> <p>{contents}</p> <span className="more">more</span> </Link> </li> ); } }
按钮组件PageButton
class pageButton extends Component { constructor(props) { super(props); this.setNext=this.setNext.bind(this); this.setUp=this.setUp.bind(this); this.state={ num: 0, pagenum:this.props.current } } //下一页 setNext(){ if(this.state.pagenum < this.props.totalPage){ this.setState({ num:this.state.num + this.props.pageSize, pagenum:this.state.pagenum + 1 },function () { console.log(this.state) this.props.pageNext(this.state.num) }) } } //上一页 setUp(){ if(this.state.pagenum > 1){ this.setState({ num:this.state.num - this.props.pageSize, pagenum:this.state.pagenum - 1 },function () { console.log(this.state) this.props.pageNext(this.state.num) }) } } render() { return ( <div className="change_page"> <span onClick={ this.setUp } >上一页</span> <span>{ this.state.pagenum }页/ { this.props.totalPage }页</span> <span onClick={ this.setNext }>下一页</span> </div> ); } }
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