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React 序号列
通过列类型 index 添加自动递增的序号列。
使用的 API
ts
type Column = {
key: string; // 列标识(必填)
title: string; // 列标题(必填)
width: number; // 列宽(必填)
type: 'index'; // 特殊列类型:序号列
align: 'left' | 'center' | 'right'; // 列的水平对齐(应用于表头、表身、表尾)
}
type Options = {
list: T[]; // 数据列表
itemKey: string; // 行唯一标识字段名
estimatedSize: number; // 行预估高度(px)
buffer: number; // 缓冲区行数
border: boolean; // 是否显示边框
}示例
微应用尚未挂载。
源码
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tsx
import React from 'react';
import { VirtTableReact, type ReactTableColumn, type VirtTableRef } from '@virt-table/react';
import { faker } from '@faker-js/faker';
const DATA_COL = 8;
const ROW_COUNT = 500;
const columns: ReactTableColumn[] = [
{ key: '__index', title: '#', width: 64, type: 'index' as const, align: 'center' as const },
...Array.from({ length: DATA_COL }, (_, i) => ({
key: `extra_${i}`,
title: `列 ${i}`,
width: 150,
})),
];
const list = Array.from({ length: ROW_COUNT }, (_, i) => {
const row: Record<string, unknown> = { id: i };
for (let c = 0; c < DATA_COL; c++) {
row[`extra_${c}`] = `${i}-${c}-${faker.lorem.word()}`;
}
return row;
});
export default function IndexColTable() {
const tableRef = React.useRef<VirtTableRef>(null);
const status = '序号列 + 8 列数据,border: true';
return (
<div className="demo-wrapper">
<h3 className="demo-title">React 序号列</h3>
<div className="virt-table-controls" />
<div className="status-text">{status}</div>
<div style={{ width: 800, height: 600 }} className="demo-container">
<VirtTableReact
ref={tableRef}
columns={columns}
options={{ list, itemKey: 'id', estimatedSize: 40, buffer: 4, border: true }}
/>
</div>
</div>
);
}