element UI树形图可以加分页嘛?

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

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