Excel纯前端解析回显

<el-upload
class="upload-demo"
ref="upload"
action=""
:auto-upload="false"
:file-list="fileList"
:on-change="handleChange"
multiple
:show-file-list="false"
>
<el-button type="text">点击上传</el-button>
</el-upload>

handleChange(file,fileList){
this.fileList = [fileList[fileList.length - 1]]; // 只能上传一个Excel，重复上传会覆盖之前的\
this.file = file.raw;
let reader = new FileReader()
let _this = this
reader.readAsArrayBuffer(this.file)
reader.onload = function () {
let buffer = reader.result
let bytes = new Uint8Array(buffer)
let length = bytes.byteLength
let binary = ''
for (let i = 0; i < length; i++) {
binary += String.fromCharCode(bytes[i])
}
let XLSX = require('xlsx')
let wb = XLSX.read(binary, {
type: 'binary'
})
let outdata = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]])\
console.log(outdata)
}
},