1. 安装相关依赖

主要是两个依赖
npm install --save xlsx file-saver

2.组件里头引入

import FileSaver from 'file-saver'
import XLSX from 'xlsx'

3.调用

	exportExcel () {
         var wb = XLSX.utils.table_to_book(document.querySelector('#out-table'))
         var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: true, type: 'array' })
         FileSaver.saveAs(new Blob([wbout], { type: 'application/octet-stream' }), 'sheetjs.xlsx')
         return wbout
     },