前言
为了练习vue.js 之前做了一个vue.js前端分页效果，后面看到vue.js组件内容，就试着把这个功能写成一个简单组件，向组件元素传递一个object参数，包含分页数据，显示的列名信息，分页信息，组件提供一个事件，传递给父元素一个分页信息，父元素拿着分页信息获取数据，修改之前的object。这样就实现了分页效果。
效果
知识点
- components 组件
- props 父级向组件传参
- template 模板
- computed 计算属性
- $emit() 组件事件，组件先父级元素传参
html内容
对比之前html内容简洁多了。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title> CommonTest</title>
<link rel="stylesheet" href="../bootstrap.min.css" />
</head>
<body>
<div class="container body-content">
<header>
<h2>vue.js组件分页效果</h2>
</header>
<div id="test" class="form-group">
<my-component v-on:show-page="getPageData" v-bind:pager-data="pagerData"></my-component>
</div>
<hr />
<footer>
<p>© 2017 - 易兒善</p>
</footer>
</div>
</body>
</html>
javascript内容
<script src="../vue.js"></script>
<script src="com.js"></script>
<script> //模拟获取数据 var getData=function(){ var result = []; for (var i = 0; i < 205; i++) { result[i] ={name:'test'+i,id:i,age:(Math.random()*100).toFixed()}; } return result; } var vue = new Vue({ el: "#test", ready:function(){ this.dataAll = getData(); this.pagerData.page.totalCount = this.dataAll.length; this.getPageData(this.pagerData.page); }, methods: { getPageData: function (page) { this.pagerData.page.pagesize = page.pagesize; this.pagerData.page.pageCurrent = page.pageCurrent; this.pagerData.page.pageCount = Math.ceil(this.pagerData.page.totalCount / page.pagesize);// 修改分页信息 var newPageInfo = []; for (var i = 0; i < page.pagesize; i++) { var index =i+(page.pageCurrent-1)*page.pagesize; if(index>this.pagerData.page.totalCount-1)break; newPageInfo[newPageInfo.length] = this.dataAll[index]; } this.pagerData.data = newPageInfo; // 修改分页数据 } }, components: { 'my-component': pager }, data: { //所有数据，分页数据从这里取 dataAll:[], pagerData:{ data:[], rows:[{label:"ID",name:"id"}, {label:"名字",name:"name"}, {label:"年龄",name:"age"} ], page:{ arrPageSize:[10,20,30,40], pagesize:10, pageCount:1, pageCurrent:1, totalCount:1 } } }, }); </script>com.js组件内容
var pager = { props: { pagerData:{ type: Object, default:function(){ return{ data:[], rows:[], page:{ //分页大小 pagesize:20, //分页数 arrPageSize:[10,20,30,40], //当前页面 pageCurrent:1, //总分页数 pageCount:1, //总数 totalCount:10 } } } } }, template: '<table class="table table-bordered table-responsive table-striped">\ <tr>\ <th v-for="item in pagerData.rows" v-on:click="sortBy(item.name)">{{item.label}}</th>\ </tr>\ <tr v-for="dataItem in pagerData.data | orderBy sortparam sorttype">\ <td v-for="item in pagerData.rows">{{dataItem[item.name]}}</td>\ </tr>\ </table>\ <div class="pager" id="pager">\ <span class="form-inline">\ <select class="form-control" v-model="pagesize" v-on:change="showPage(pageCurrent,$event)" number>\ <option v-for="item in pagerData.page.arrPageSize" value="{{item}}">{{item}}</option>\ </select>\ </span>\ <span class="btn btn-default" v-on:click="showPage(1,$event)">首页</span>\ <span class="btn btn-default" v-on:click="showPage(pageCurrent-1,$event)">上一页</span>\ <span class="form-inline">\ <input class="form-control" style="width:60px;text-align:center" type="text" v-model="pageCurrent" v-on:keyup.enter="showPage(mypageCurrent,$event,true)" />\ </span>\ <span>共{{pagerData.page.pageCount}}页</span>\ <span class="btn btn-default" v-on:click="showPage(pageCurrent+1,$event)">下一页</span>\ <span class="btn btn-default" v-on:click="showPage(pagerData.page.pageCount,$event)">尾页</span>\ <span>共{{pagerData.page.totalCount}}条数据，当前显示第{{startData}}-{{endData}}条记录</span>\ </div>', data:function(){return{ mypagesize:10, mypageCurrent:1, sortparam:"", sorttype:1, }}, //计算属性 computed:{ // 分页大小 获取的时候显示父级传入的，修改的时候修改自身的。子组件不能修改父元素的值 pagesize:{ get:function(){ return this.pagerData.page.pagesize; }, set:function(value){ this.mypagesize = value; } }, pageCurrent:{ get:function(){ return this.pagerData.page.pageCurrent; }, set:function(value){ this.mypageCurrent = value; } }, startData:function(){ return this.pagerData.page.pagesize*(this.pagerData.page.pageCurrent-1)+1; }, endData:function(){ var max =this.pagerData.page.pagesize*this.pagerData.page.pageCurrent; return max>this.pagerData.page.totalCount?this.pagerData.page.totalCount:max; } }, methods:{ showPage: function (pageIndex, $event) { if (pageIndex > 0) { if(pageIndex>this.pagerData.page.pageCount) pageIndex = this.page.pageCount; this.$emit('show-page',{pageCurrent:pageIndex,pagesize:this.mypagesize});//事件 } },sortBy: function (sortparam) { this.sortparam = sortparam; this.sorttype = this.sorttype == -1 ? 1 : -1; } } }