vue3,vue2导出表格中的数据,导出excel格式

"xlsx": "^0.18.5"
import * as XLSX from 'xlsx';

async function exportExcel() {
	if (!itemsquan.value || itemsquan.value.length == 0) {
		ElMessage({
			showClose: true,
			message: '暂无数据可以导出 ',
			type: 'warning',
		});
		return;
	}
	// 拷贝原数据
	let tableitem = JSON.parse(JSON.stringify(itemsquan.value));
	// 修改数据中的字段
	await tableitem.forEach(async (it: any) => {
		it.attachmentid1 = it.attachmentid1 > 0 ? '已上传' : '未上传';
	});
	// 列名
	let columnArr = [
		'省份',
		'城市',
	];
	//列对应的值
	let keyArr = [
		'province',
		'city',
	];
	const columns = generateColumns(keyArr.length, keyArr, columnArr);
	const res: string[][] = tableitem.map((it) => {
		const arr: any = [];
		columns.forEach((column) => {
			arr.push(it[column.dataKey]);
		});
		return arr;
	});
	const titleList: string[] = [];
	columns.forEach((column) => {
		titleList.push(column.title);
	});
	res.unshift(titleList);
	const workSheet = XLSX.utils.aoa_to_sheet(res);
	const workBook = XLSX.utils.book_new();
	XLSX.utils.book_append_sheet(workBook, workSheet, '数据报表');
	//设置导出名称(DateFormatPipe为自定义函数,可忽略)
	let time = DateFormatPipe(new Date(), 'yyyy-MM-dd');
	let name_ext = '进度查看_' + questionnaireName.value + '_' + time + '.xlsx';
	XLSX.writeFile(workBook, name_ext);
}