1.前端后台管理会存在很多表格,表格数据过多就需要分页;
2.前端交互每次搜索如果都请求服务器会加大服务器的压力,所以在数据量不是很大的情况下可以一次性将数据返回,前端做检索
3.下面贴上一个demo
<template>
<div>
<el-input v-model="tableDataName" placeholder="请输入姓名" style="240px"></el-input>
<el-button type="primary" @click="doFilter">搜索</el-button>
<el-button type="primary" @click="openData">展示数据</el-button>
<el-table
:data="tableDataEnd"
border
style=" 100%">
<el-table-column
prop="date"
label="日期"
width="180">
</el-table-column>
<el-table-column
prop="name"
label="姓名"
width="180">
</el-table-column>
<el-table-column
prop="address"
label="地址">
</el-table-column>
</el-table>
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page="currentPage"
:page-sizes="[1, 2, 3, 4]"
:page-size="pageSize"
layout="total, sizes, prev, pager, next, jumper"
:total="totalItems">
</el-pagination>
</div>
</template>
<script>
export default {
data() {
return {
tableDataBegin: [
{
date: "2016-05-01",
name: "王小虎",
address: "上海市普陀区金沙江路 1518 弄"
},
{
date: "2016-05-02",
name: "王小虎",
address: "上海市普陀区金沙江路 1517 弄"
},
{
date: "2016-05-03",
name: "王二虎",
address: "上海市普陀区金沙江路 1519 弄"
},
{
date: "2016-05-04",
name: "王二虎",
address: "上海市普陀区金沙江路 1516 弄"
},
{
date: "2016-05-05",
name: "王三虎",
address: "上海市普陀区金沙江路 1518 弄"
},
{
date: "2016-05-06",
name: "王三虎",
address: "上海市普陀区金沙江路 1517 弄"
},
{
date: "2016-05-07",
name: "王小虎",
address: "上海市普陀区金沙江路 1519 弄"
},
{
date: "2016-05-08",
name: "王小虎",
address: "上海市普陀区金沙江路 1516 弄"
}
],
tableDataName: "",
tableDataEnd: [],
currentPage: 4,
pageSize: 2,
totalItems: 0,
filterTableDataEnd:[],
flag:false
};
},
created() {
this.totalItems = this.tableDataBegin.length;
if (this.totalItems > this.pageSize) {
for (let index = 0; index < this.pageSize; index++) {
this.tableDataEnd.push(this.tableDataBegin[index]);
}
} else {
this.tableDataEnd = this.tableDataBegin;
}
},
methods: {
//前端搜索功能需要区分是否检索,因为对应的字段的索引不同
//用两个变量接收currentChangePage函数的参数
doFilter() {
if (this.tableDataName == "") {
this.$message.warning("查询条件不能为空！");
return;
}
this.tableDataEnd = []
//每次手动将数据置空,因为会出现多次点击搜索情况
this.filterTableDataEnd=[]
this.tableDataBegin.forEach((value, index) => {
if(value.name){
if(value.name.indexOf(this.tableDataName)>=0){
this.filterTableDataEnd.push(value)
}
}
});
//页面数据改变重新统计数据数量和当前页
this.currentPage=1
this.totalItems=this.filterTableDataEnd.length
//渲染表格,根据值
this.currentChangePage(this.filterTableDataEnd)
//页面初始化数据需要判断是否检索过
this.flag=true
},
openData() {},
handleSizeChange(val) {
console.log(`每页 ${val} 条`);
this.pageSize = val;
this.handleCurrentChange(this.currentPage);
},
handleCurrentChange(val) {
console.log(`当前页: ${val}`);
this.currentPage = val;
//需要判断是否检索
if(!this.flag){
this.currentChangePage(this.tableDataEnd)
}else{
this.currentChangePage(this.filterTableDataEnd)
}
}, //组件自带监控当前页码
currentChangePage(list) {
let from = (this.currentPage - 1) * this.pageSize;
let to = this.currentPage * this.pageSize;
this.tableDataEnd = [];
for (; from < to; from++) {
if (list[from]) {
this.tableDataEnd.push(list[from]);
}
}
}
}
};
</script>