说明：前端单独做的表格分页—用于解决数据过多页面渲染压力，如果是服务器响应数据过慢，使用第二种分页方法–后端分页。以下为分页效果

一、前端分页

1、创建表格

<el-table:key="new Date().getTime()":data="tableData.slice((currentPage-1)*pageSize,currentPage*pageSize)"row-key="id"ref="table"style="width: 100%"><template v-for="(item, idx) in tableHead"><el-table-column:key="item.key":prop="item.value":label="item.name"align="center"></el-table-column></template></el-table>

说明：slice(a,b)的作用是从已有的数组中返回选定的元素"a"表示开始，"b"表示结束。 而currentPage和pageSize在此网页的作用会在接下来进行说明。

2、创建分页

<el-pagination align='center' @size-change="handleSizeChange" @current-change="handleCurrentChange":current-page="currentPage" :page-sizes="[1,5,10,20]" :page-size="pageSize" layout="total, sizes, prev, pager, next, jumper" :total="tableData.length">
</el-pagination>

说明分页器绑定变量说明：

:current-page的值表示当前是第几页；

:page-sizes的值表示可以选择一页多少条；

:page-size的值表示当前一页显示几条；

layout的值表示分页需要显示的内容，例如“total” 表示总数、“next” 表示下一页等；

:total的值表示共多少条数据；

根据变量pageSize值，以及当前页变量currentPage，在界面上会自动把分的页显示出来，如上图中的：1、2、3……6…。

3、在data中定义变量

data() {return {tableData: [],tableHead: [{name: "母线名称", value: 'busName',  },{name: "电压等级", value: 'voltageLevel',  },{name: "开始时间", value: 'startDate', },{name: "恢复时间", value: 'recoverDate',  },{name: "持续时间(分钟)", value: 'continuedDate', },{name: "越限类型", value: 'limitType',  },{name: "越限极值", value: 'limitValue',  },],currentPage: 1, // 当前页码total: 20, // 总条数pageSize: 2, // 每页的数据条数};},

4、 添加事件

methods: {//每页条数改变时触发 选择一页显示多少行handleSizeChange(val) {console.log(`每页 ${val} 条`);this.currentPage = 1;this.pageSize = val;},//当前页改变时触发 跳转其他页handleCurrentChange(val) {console.log(`当前页: ${val}`);this.currentPage = val;}
}

5、完整前端分页代码展示

<template><div class="v-table" ref="tableheight" style="width: 100%; height: 100%"><el-table:key="new Date().getTime()":data="tableData.slice((currentPage-1)*pageSize,currentPage*pageSize)"row-key="id"ref="table"style="width: 100%;height: calc(100% - 60px)"><template v-for="(item, idx) in tableHead"><el-table-column:key="item.key":prop="item.value":label="item.name"align="center"></el-table-column></template></el-table><!-- 分页器 --><div class="block-box"><el-pagination align='center'@size-change="handleSizeChange"@current-change="handleCurrentChange":current-page="currentPage":page-sizes="[1,5,10,20]":page-size="pageSize"layout="total, sizes, prev, pager, next, jumper":total="tableData.length"></el-pagination></div></div>
</template><script>export default {data() {return {tableData: [{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },],tableHead: [{name: "母线名称", value: 'busName',  },{name: "电压等级", value: 'voltageLevel',  },{name: "开始时间", value: 'startDate', },{name: "恢复时间", value: 'recoverDate',  },{name: "持续时间(分钟)", value: 'continuedDate', },{name: "越限类型", value: 'limitType',  },{name: "越限极值", value: 'limitValue',  },],currentPage: 1, // 当前页码total: 20, // 总条数pageSize: 2, // 每页的数据条数};},mounted() {},methods: {// 表格分页---前端分页//每页条数改变时触发 选择一页显示多少行handleSizeChange(val) {this.currentPage = 1;this.pageSize = val;},//当前页改变时触发 跳转其他页handleCurrentChange(val) {this.currentPage = val;},}};
</script><style lang="less">.v-table {//分页样式.block-box{width: 100%;height: 50px;margin-top: 10px;display: flex;justify-content: center;align-items: center;}}
</style>

二、后端分页

后端分页就是，根据前端所给后端传的两个参数处理判断响应数据，第一参数：每一页多少条数据pageSize，第二个参数：当前所选中的页码currenPage，进行

说明：表格模板代码以及分页器代码创建步骤同上，唯一不同就是总表格数据条数:total不就是后端响应的表格数据长度，需要后端另外返回表格数据总数;否则分页器只显示第1页。

1、js代码

methods: {//表格分页操作//每页条数改变时触发 选择一页显示多少行handleSizeChange(val){this.pageSize = val;this.params = {pageSize:this.pageSize,currentPage:this.currentPage,}this.getDialogData(val,this.currentPage,this.dialogTableUrl, this.params);},//当前页改变时触发 跳转其他页handleCurrentChange(val){this.currentPage = val;this.params = {pageSize:this.pageSize,currentPage:this.currentPage,}this.getDialogData(this.pageSize,val,this.dialogTableUrl, this.params);},getDialogData(pageSize,currentPage,url, params) {getRequestData(url, 'get', params).then((res) => {if (res.status == 200){let data = res.data.data;this.total = data.num;//总数据条数this.tableData = data.list}})},
}

3.完整后端分页代码

<template><div class="v-table" ref="tableheight" style="width: 100%; height: 100%"><el-table:key="new Date().getTime()":data="tableData"row-key="id"ref="table"style="width: 100%;height: calc(100% - 60px)"><template v-for="(item, idx) in tableHead"><el-table-column:key="item.key":prop="item.value":label="item.name"align="center"></el-table-column></template></el-table><!-- 分页器 --><div class="block-box"><el-pagination align='center'@size-change="handleSizeChange"@current-change="handleCurrentChange":current-page="currentPage":page-sizes="[1,5,10,20]":page-size="pageSize"layout="total, sizes, prev, pager, next, jumper":total="total"></el-pagination></div></div>
</template><script>export default {data() {return {tableData: [{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },{busName:"xxx",voltageLevel:"",startDate:"",recoverDate:"",continuedDate:"",limitType:"",limitValue:"",  },],tableHead: [{name: "母线名称", value: 'busName',  },{name: "电压等级", value: 'voltageLevel',  },{name: "开始时间", value: 'startDate', },{name: "恢复时间", value: 'recoverDate',  },{name: "持续时间(分钟)", value: 'continuedDate', },{name: "越限类型", value: 'limitType',  },{name: "越限极值", value: 'limitValue',  },],currentPage: 1, // 当前页码total: 20, // 总条数pageSize: 2, // 每页的数据条数};},mounted() {},methods: {// 表格分页---前端分页//每页条数改变时触发 选择一页显示多少行handleSizeChange(val) {this.currentPage = 1;this.pageSize = val;},//当前页改变时触发 跳转其他页handleCurrentChange(val) {this.currentPage = val;},}};
</script><style lang="less">.v-table {//分页样式.block-box{width: 100%;height: 50px;margin-top: 10px;display: flex;justify-content: center;align-items: center;}}
</style>