在web开发过程中，通常使用表格展示数据，在数据较多时采用分页的方式展示给用户。
分页方式有前端假分页和后端分页两种实现方式，此文仅记录前端假分页实现方式。
第一步：添加分页组件（el-pagination）在表格下方，添加的代码如下所示：
<template>
<el-table>
...
</el-table>
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page="currentPage"
:page-sizes="[15, 30, 50, 100]"
:page-size="pageSize"
layout="total, sizes, prev, pager, next, jumper"
:total="currentTotal">
</el-pagination>
</template>
<script>
...
</script>
第二步：添加分页所需的变量，如下所示：
<script>
export default {
methods: {
...
},
data() {
return {
currentPage: 1,
pageSize: 30,
currentTotal: 0,
tableData: []
}
}
}
</script>
第三步：添加相应的分页方法，如下所示：
<script>
export default {
methods: {
handleSizeChange(val) {
this.pageSize = val;
console.log(`每页 ${val} 条`);
},
handleCurrentChange(val) {
this.currentPage = val;
console.log(`当前页: ${val}`);
}
},
data() {
return {
currentPage: 1,
pageSize: 30,
currentTotal: 0,
tableData: []
}
}
}
</script>
第四步：修改查询按钮逻辑，在成功查询后，更新数据的总数量。代码如下所示：
<script>
import {ServFindAllByConditions} from ‘@/service/database‘
export default {
methods: {
handleBtnQuery(query) {
if (query.env === "") {
this.$message({
message: ‘请选择查询环境‘,
type: ‘warning‘
});
return;
}
ServFindAllByConditions(query).then(res => {
this.tableData = res.data;
this.currentTotal = this.tableData.length;
this.$message({
message: res.msg,
type: res.code == 200 ? ‘success‘ : ‘warning‘
});
})
.catch(err => {
console.log(err)
})
},
handleSizeChange(val) {
this.pageSize = val;
console.log(`每页 ${val} 条`);
},
handleCurrentChange(val) {
this.currentPage = val;
console.log(`当前页: ${val}`);
}
},
data() {
return {
currentPage: 1,
pageSize: 30,
currentTotal: 0,
tableData: []
}
}
}
</script>
第五步：使用slice实现前端的假分页，最终vue文件中的主要代码如下所示：
<template>
<d2-container>
<el-form :model="query" :inline="true">
<el-form-item label="英文简称：">
<el-input v-model="query.eng" placeholder="请输入英文简称..." clearable></el-input>
</el-form-item>
<el-form-item>
<el-button @click="handleBtnQuery(query)" type="primary" icon="el-icon-search">搜索</el-button>
</el-form-item>
</el-form>
<el-table
:data="tableData.slice((currentPage-1)*pageSize,currentPage*pageSize)"
hight="250"
border
stripe
max-height="650"
style="width: 100%">
<el-table-column fixed type="index" width="50"></el-table-column>
<!--<el-table-column prop="id" label="系统主键" width="100"></el-table-column>-->
...
...
<el-table-column label="访问链接" width="400" show-overflow-tooltip>
<template slot-scope="scope">
<a :href="scope.row.url" target="_blank" class="buttonText">{{scope.row.url}}</a>
</template>
</el-table-column>
</el-table>
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page="currentPage"
:page-sizes="[15, 30, 50, 100]"
:page-size="pageSize"
layout="total, sizes, prev, pager, next, jumper"
:total="currentTotal">
</el-pagination>
</template>
<script>
import {ServFindAllByConditions} from ‘@/service/database‘
export default {
methods: {
handleBtnQuery(query) {
if (query.env === "") {
this.$message({
message: ‘请选择查询环境‘,
type: ‘warning‘
});
return;
}
ServFindAllByConditions(query).then(res => {
this.tableData = res.data;
this.currentTotal = this.tableData.length;
this.$message({
message: res.msg,
type: res.code == 200 ? ‘success‘ : ‘warning‘
});
})
.catch(err => {
console.log(err)
})
},
handleSizeChange(val) {
this.pageSize = val;
console.log(`每页 ${val} 条`);
},
handleCurrentChange(val) {
this.currentPage = val;
console.log(`当前页: ${val}`);
}
},
data() {
return {
currentPage: 1,
pageSize: 30,
currentTotal: 0,
tableData: []
}
}
}
</script>