element UI树形图可以加分页嘛?
下拉的数据是动态加载的,有时候数据很多,想在下拉里加分页。
回答:
可以的,和el-table的是一样的,你只要把逻辑弄好就可以了。
回答:
在el-table中设置expand-row-keys属性为一个数组,数组中存放的是需要展开的行的key值。
<el-table :data="tableData" :expand-row-keys="expandKeys"></el-table>
在分页组件中设置total属性为展开的行数,pageSize属性为每页展示的行数。
<el-pagination :total="expandKeys.length" :page-size="pageSize" />
在Vue实例中定义expandKeys和pageSize变量,并在methods中定义handleSizeChange和handleCurrentChange方法来处理分页变化。
data() { return {
expandKeys: [], // 展开的行的key值
pageSize: 10 // 每页展示的行数
}
},
methods: {
handleSizeChange(val) {
this.pageSize = val;
},
handleCurrentChange(val) {
// 计算当前页需要展开的行的key值
const start = (val - 1) * this.pageSize;
const end = start + this.pageSize;
this.expandKeys = this.tableData.slice(start, end).map(item => item.key);
}
}
回答:
<template> <div>
<el-table
:data="tableData"
style="width: 100%"
row-key="id"
border
lazy
:load="load"
:tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
>
<el-table-column prop="date" label="Date" />
<el-table-column prop="name" label="Name" />
<el-table-column prop="address" label="Address" />
</el-table>
<el-pagination
v-if="showPagination"
@current-change="handleCurrentChange"
:current-page="currentPage"
:page-size="pageSize"
layout="prev, pager, next"
:total="totalItems"
></el-pagination>
</div>
</template>
<script>
export default {
data() {
return {
tableData: [
],
showPagination: false,
currentPage: 1,
pageSize: 5,
totalItems: 0,
currentExpandedRow: null,
};
},
methods: {
async loadChildren(parentId, page) {
// Load children data using parentId and page
// Replace this with your actual API call
return new Promise((resolve) => {
setTimeout(() => {
const data = [
// ...your child data
];
resolve({ data, total: 15 });
}, 500);
});
},
async load(row, treeNode, resolve) {
if (treeNode.level === 0) {
const { data, total } = await this.loadChildren(row.id, 1);
this.totalItems = total;
this.showPagination = true;
this.currentExpandedRow = row;
resolve(data);
}
},
async handleCurrentChange(newPage) {
if (this.currentExpandedRow) {
const { data } = await this.loadChildren(this.currentExpandedRow.id, newPage);
this.$set(this.currentExpandedRow, "children", data);
}
},
},
};
</script>
以上是 element UI树形图可以加分页嘛? 的全部内容, 来源链接: utcz.com/p/934246.html