Element-ui component library table Export Table Excel spreadsheet - duplicate data problems

Reference: https://www.jianshu.com/p/1971fc5b97ca

https://blog.csdn.net/qq_40614207/article/details/94003793

Code posted

  // define an export Excel spreadsheet event
      exportExcel () {
        Solution generating duplicate data // - l fixed property since the use of
        var fix = document.querySelector('.el-table__fixed')
        There wB
        // determine whether there is fixed a table node to be exported, if there are, conversion excel to the dom removed, and then append back
        if (fix) {
          / * Generate Workbook object from the table * /
          wb = XLSX.utils.table_to_book(document.querySelector('#out-table').removeChild(fix))
          document.querySelector('#out-table').appendChild(fix)
        } else {
          wb = XLSX.utils.table_to_book(document.querySelector('#out-table'))
        }
        / * Get a binary string as output * /
        var wbout = XLSX.write(wb, {
          bookType: 'xlsx',
          bookSST: true,
          type: 'array'
        })
        try {
          FileSaver.saveAs(
            // Blob object represents an immutable data object from the original class file.
            JavaScript is not necessarily the data in its native format // Blob represented.
            // File interface is based on Blob, blob inherited and extended functionality to support files on the user's system.
            // Blob returns a newly created object, the contents of the parameters in a given array series.
            new Blob([wbout], { type: 'application/octet-stream' }),
            // set the export file name
            'sheetjs.xlsx'
          )
        } catch (e) {
          if (typeof console !== 'undefined') console.log(e, wbout)
        }
        return wbout
      },