Vue uses the online form of Excel in the front end of lucky sheet to import, display and export Excel files

scene ：

When the interface is ordinary element When the table is not enough to show the data , Or for a better experience . The back-end processes the data into binary document streams , Return to the front end and display directly as excel.

design sketch ：

Code implementation ：

Installation and introduction ：

index.html Something else has to be introduced , My project does not index.html, I was there mounted This introduces

 const script= document.createElement('script');
 script.type = 'text/javascript';
 script.src = `https://cdn.jsdelivr.net/npm/luckysheet/dist/plugins/js/plugin.js`;
 document.head.appendChild(script);
 const script1= document.createElement('script');
 script1.type = 'text/javascript';
 script1.src = `https://cdn.jsdelivr.net/npm/luckysheet/dist/luckysheet.umd.js`;
 document.head.appendChild(script1);

npm install luckyexcel

import LuckyExcel from 'luckyexcel'

export.js

// import {
     createCellPos } from './translateNumToLetter'
const Excel = require('exceljs')

import FileSaver from 'file-saver'
export var testaaa = function (){
    
  console.log("...");
}
export var exportExcel = function(luckysheet, value) {
    
  //  Parameter is luckysheet.getluckysheetfile() The object of acquisition 
  // 1. Create Workbook , You can add properties to the workbook 
  const workbook = new Excel.Workbook()
  // 2. Create a table , The second parameter can configure what kind of worksheet to create 
  if (Object.prototype.toString.call(luckysheet) === '[object Object]') {
    
    luckysheet = [luckysheet]
  }
  luckysheet.forEach(function(table) {
    
    if (table.data.length === 0) return  true
    // ws.getCell('B2').fill = fills.
    const worksheet = workbook.addWorksheet(table.name)
    const merge = (table.config && table.config.merge) || {
    }
    const borderInfo = (table.config && table.config.borderInfo) || {
    }
    // 3. Set cell merge , Set cell borders , Set cell style , Set the value 
    setStyleAndValue(table.data, worksheet)
    setMerge(merge, worksheet)
    setBorder(borderInfo, worksheet)
    return true
  })

  // return
  // 4. write in  buffer
  const buffer = workbook.xlsx.writeBuffer().then(data => {
    
    // console.log('data', data)
    const blob = new Blob([data], {
    
      type: 'application/vnd.ms-excel;charset=utf-8'
    })
    console.log(" Export succeeded ！")
    FileSaver.saveAs(blob, `${
     value}.xlsx`)
  })
  return buffer
}

var setMerge = function(luckyMerge = {
    }, worksheet) {
    
  const mergearr = Object.values(luckyMerge)
  mergearr.forEach(function(elem) {
    
    // elem Format ：{
    r: 0, c: 0, rs: 1, cs: 2}
    //  Press start line , Start the column , End line , End column merge （ amount to  K10:M12）
    worksheet.mergeCells(
      elem.r + 1,
      elem.c + 1,
      elem.r + elem.rs,
      elem.c + elem.cs
    )
  })
}

var setBorder = function(luckyBorderInfo, worksheet) {
    
  if (!Array.isArray(luckyBorderInfo)) return
  // console.log('luckyBorderInfo', luckyBorderInfo)
  luckyBorderInfo.forEach(function(elem) {
    
    //  Now only compatible to borderType  by range The situation of 
    // console.log('ele', elem)
    if (elem.rangeType === 'range') {
    
      let border = borderConvert(elem.borderType, elem.style, elem.color)
      let rang = elem.range[0]
      // console.log('range', rang)
      let row = rang.row
      let column = rang.column
      for (let i = row[0] + 1; i < row[1] + 2; i++) {
    
        for (let y = column[0] + 1; y < column[1] + 2; y++) {
    
          worksheet.getCell(i, y).border = border
        }
      }
    }
    if (elem.rangeType === 'cell') {
    
      // col_index: 2
      // row_index: 1
      // b: {
    
      //   color: '#d0d4e3'
      //   style: 1
      // }
      const {
     col_index, row_index } = elem.value
      const borderData = Object.assign({
    }, elem.value)
      delete borderData.col_index
      delete borderData.row_index
      let border = addborderToCell(borderData, row_index, col_index)
      // console.log('bordre', border, borderData)
      worksheet.getCell(row_index + 1, col_index + 1).border = border
    }
    // console.log(rang.column_focus + 1, rang.row_focus + 1)
    // worksheet.getCell(rang.row_focus + 1, rang.column_focus + 1).border = border
  })
}
var setStyleAndValue = function(cellArr, worksheet) {
    
  if (!Array.isArray(cellArr)) return
  cellArr.forEach(function(row, rowid) {
    
    row.every(function(cell, columnid) {
    
      if (!cell) return true
      let fill = fillConvert(cell.bg)

      let font = fontConvert(
        cell.ff,
        cell.fc,
        cell.bl,
        cell.it,
        cell.fs,
        cell.cl,
        cell.ul
      )
      let alignment = alignmentConvert(cell.vt, cell.ht, cell.tb, cell.tr)
      let value = ''

      if (cell.f) {
    
        value = {
     formula: cell.f, result: cell.v }
      } else if (!cell.v && cell.ct && cell.ct.s) {
    
        // xls To xlsx after , There are different formats inside , Will go into rich text , That is, the value does not exist and cell.v, It exists in cell.ct.s after 
        // value = cell.ct.s[0].v
        cell.ct.s.forEach(arr => {
    
          value += arr.v
        })
      } else {
    
        value = cell.v
      }
      //  style  Fill in to _value Filling color can be realized in 
      let letter = createCellPos(columnid)
      let target = worksheet.getCell(letter + (rowid + 1))
      // console.log('1233', letter + (rowid + 1))
      for (const key in fill) {
    
        target.fill = fill
        break
      }
      target.font = font
      target.alignment = alignment
      target.value = value

      return true
    })
  })
}

var fillConvert = function(bg) {
    
  if (!bg) {
    
    return {
    }
  }
  // const bgc = bg.replace('#', '')
  let fill = {
    
    type: 'pattern',
    pattern: 'solid',
    fgColor: {
     argb: bg.replace('#', '') }
  }
  return fill
}

var fontConvert = function(
  ff = 0,
  fc = '#000000',
  bl = 0,
  it = 0,
  fs = 10,
  cl = 0,
  ul = 0
) {
    
  // luckysheet：ff( style ), fc( Color ), bl( bold ), it( Italics ), fs( size ), cl( Delete line ), ul( Underline )
  const luckyToExcel = {
    
    0: ' Microsoft YaHei ',
    1: ' Song style （Song）',
    2: ' In black （ST Heiti）',
    3: ' Regular script （ST Kaiti）',
    4: ' Imitation song （ST FangSong）',
    5: ' NSimSun （ST Song）',
    6: ' Chinese New Wei ',
    7: ' Chinese Xingkai ',
    8: ' Chinese official script ',
    9: 'Arial',
    10: 'Times New Roman ',
    11: 'Tahoma ',
    12: 'Verdana',
    num2bl: function(num) {
    
      return num === 0 ? false : true
    }
  }
  //  appear Bug, When you import it ff by luckyToExcel Of val

  let font = {
    
    name: typeof ff === 'number' ? luckyToExcel[ff] : ff,
    family: 1,
    size: fs,
    color: {
     argb: fc.replace('#', '') },
    bold: luckyToExcel.num2bl(bl),
    italic: luckyToExcel.num2bl(it),
    underline: luckyToExcel.num2bl(ul),
    strike: luckyToExcel.num2bl(cl)
  }

  return font
}

var alignmentConvert = function(
  vt = 'default',
  ht = 'default',
  tb = 'default',
  tr = 'default'
) {
    
  // luckysheet:vt( vertical ), ht( level ), tb( Line break ), tr( rotate )
  const luckyToExcel = {
    
    vertical: {
    
      0: 'middle',
      1: 'top',
      2: 'bottom',
      default: 'top'
    },
    horizontal: {
    
      0: 'center',
      1: 'left',
      2: 'right',
      default: 'left'
    },
    wrapText: {
    
      0: false,
      1: false,
      2: true,
      default: false
    },
    textRotation: {
    
      0: 0,
      1: 45,
      2: -45,
      3: 'vertical',
      4: 90,
      5: -90,
      default: 0
    }
  }

  let alignment = {
    
    vertical: luckyToExcel.vertical[vt],
    horizontal: luckyToExcel.horizontal[ht],
    wrapText: luckyToExcel.wrapText[tb],
    textRotation: luckyToExcel.textRotation[tr]
  }
  return alignment
}

var borderConvert = function(borderType, style = 1, color = '#000') {
    
  //  Corresponding luckysheet Of config in borderinfo The parameters of 
  if (!borderType) {
    
    return {
    }
  }
  const luckyToExcel = {
    
    type: {
    
      'border-all': 'all',
      'border-top': 'top',
      'border-right': 'right',
      'border-bottom': 'bottom',
      'border-left': 'left'
    },
    style: {
    
      0: 'none',
      1: 'thin',
      2: 'hair',
      3: 'dotted',
      4: 'dashDot', // 'Dashed',
      5: 'dashDot',
      6: 'dashDotDot',
      7: 'double',
      8: 'medium',
      9: 'mediumDashed',
      10: 'mediumDashDot',
      11: 'mediumDashDotDot',
      12: 'slantDashDot',
      13: 'thick'
    }
  }
  let template = {
    
    style: luckyToExcel.style[style],
    color: {
     argb: color.replace('#', '') }
  }
  let border = {
    }
  if (luckyToExcel.type[borderType] === 'all') {
    
    border['top'] = template
    border['right'] = template
    border['bottom'] = template
    border['left'] = template
  } else {
    
    border[luckyToExcel.type[borderType]] = template
  }
  // console.log('border', border)
  return border
}

function addborderToCell(borders, row_index, col_index) {
    
  let border = {
    }
  const luckyExcel = {
    
    type: {
    
      l: 'left',
      r: 'right',
      b: 'bottom',
      t: 'top'
    },
    style: {
    
      0: 'none',
      1: 'thin',
      2: 'hair',
      3: 'dotted',
      4: 'dashDot', // 'Dashed',
      5: 'dashDot',
      6: 'dashDotDot',
      7: 'double',
      8: 'medium',
      9: 'mediumDashed',
      10: 'mediumDashDot',
      11: 'mediumDashDotDot',
      12: 'slantDashDot',
      13: 'thick'
    }
  }
  // console.log('borders', borders)
  for (const bor in borders) {
    
    // console.log(bor)
    if (borders[bor].color.indexOf('rgb') === -1) {
    
      border[luckyExcel.type[bor]] = {
    
        style: luckyExcel.style[borders[bor].style],
        color: {
     argb: borders[bor].color.replace('#', '') }
      }
    } else {
    
      border[luckyExcel.type[bor]] = {
    
        style: luckyExcel.style[borders[bor].style],
        color: {
     argb: borders[bor].color }
      }
    }
  }

  return border
}

function createCellPos(n) {
    
  let ordA = 'A'.charCodeAt(0)

  let ordZ = 'Z'.charCodeAt(0)
  let len = ordZ - ordA + 1
  let s = ''
  while (n >= 0) {
    
    s = String.fromCharCode((n % len) + ordA) + s

    n = Math.floor(n / len) - 1
  }
  return s
}

<!--excel Show function examples -->
<template>
  <div class="luckysheet-container">
    <div>
      <button @click="downloadCurrent"> Export this page </button>

      <input style="font-size:16px;width: 80px " type="file" @change="uploadExcel"/>
    </div>

    <!-- Table container -->
    <div id="luckysheet"></div>

  </div>
</template>

<script>
  
  import LuckyExcel from 'luckyexcel'
  // Import library export.js  This file is es6 Of , Not in the ordinary HTML File direct import js file （ Although it's all js file , But there's a difference , Please Baidu es6 And es5）！ Need to put es6 turn es5 Before you can directly introduce and use ！
  import {
    exportExcel} from './excelexport/export'

//   import api_test from "../../api/api_test_example"
    let api_test
  export default {
    
    name: "excel_demo",
    data() {
    
      return {
    
        sheetOption:{
    
          allowEdit:false,
          container: 'luckysheet', //luckysheet For containers id
          title:"gykj form ",
          //column: 10,// Number of columns 
          //row: 30,// Row number 
          lang: 'zh', // chinese 
          showtoolbar: false,// Show toolbar or not 
          showinfobar: false,// Whether to display the top information bar 
          showsheetbar: false,// Whether to show the bottom sheet Button 
          showsheetbarConfig:{
    
            add: false, // newly added sheet
            menu: false, //sheet Manage the menu 
            sheet: false //sheet Page display 
          },
          showstatisticBar:false,// Bottom counter bar 
          enableAddRow:false,// Allow adding rows 
          enableAddBackTop:false,// Allow to go back to the top 
          sheetFormulaBar:false,// Whether to display formula bar 
          cellRightClickConfig: {
    
            copy: false, //  Copy 
            copyAs: false, //  Copy to 
            paste: false, //  Paste 
            insertRow: false, //  Insert row 
            insertColumn: false, //  Insert column 
            deleteRow: false, //  Delete the selected line 
            deleteColumn: false, //  Delete the selected column 
            deleteCell: false, //  Delete cells 
            hideRow: false, //  Hide and show selected rows 
            hideColumn: false, //  Hide and show selected columns 
            rowHeight: false, //  Row height 
            columnWidth: false, //  Column width 
            clear: false, //  Clear content 
            matrix: false, //  Matrix operation 
            sort: false, //  Sort selection 
            filter: false, //  Screening selection 
            chart: false, //  Chart generation 
            image: false, //  Insert a picture 
            link: false, //  Insert link 
            data: false, //  data validation 
            cellFormat: false //  Format cell 
          },// Right click to edit the configuration 
        },
      }
    },
    mounted() {
    
      this.init();
    },
    methods: {
    
      /* Initialize load excel*/
      init() {
    
        // window.luckysheet.create(this.sheetOption)
      },

      /* assignment excel*/
      assignment(fileData) {
    
        let that = this;
        LuckyExcel.transformExcelToLucky(fileData, function (exportJson, luckysheetfile) {
    
          if (exportJson.sheets == null || exportJson.sheets.length == 0) {
    
            alert("Failed to read the content of the excel file, currently does not support xls files!");
            return;
          }
          that.sheetOption.title = exportJson.info.name;
          that.sheetOption.data = exportJson.sheets;

          //console.log(exportJson.sheets);
          window.luckysheet.destroy();
          window.luckysheet.create(that.sheetOption);
        });
      },

      /* download excel*/
      downloadCurrent() {
    
        exportExcel(window.luckysheet.getAllSheets(), window.luckysheet.getAllSheets()[0].name)
      },

      /* Download all */
      async downloadExcel() {
    
        let that = this;
        let params = {
    "name":" Detailed statistical table of cultivated land survey ","unit":" ha ","xzqdm":"36","sjjb":[0,1,2,3,4],"year":2019,"dicCode":"sd_20191231_sdsj","hzly":"1","limit":50,"offset":0};
        try {
    
          let fileData = await api_test.previewExcel(params)
          console.log(' Look at all the data structures ',fileData)
          LuckyExcel.transformExcelToLucky(fileData, function (exportJson, luckysheetfile) {
    
            if (exportJson.sheets == null || exportJson.sheets.length == 0) {
    
              alert("Failed to read the content of the excel file, currently does not support xls files!");
              return;
            }
            let data = window.luckysheet.toJson(exportJson.sheets).data;
            let name = " All ";
            exportExcel(data, name)
          });
        }catch (e) {
    
            console.log(e)
        }
      },

      /* Upload excel*/
      uploadExcel(evt) {
    
        const files = evt.target.files;
        if (files == null || files.length == 0) {
    
          alert("No files wait for import");
          return;
        }

        let name = files[0].name;
        let that = this
        let suffixArr = name.split("."), suffix = suffixArr[suffixArr.length - 1];
        if (suffix != "xlsx") {
    
          alert("Currently only supports the import of xlsx files");
          return;
        }
        LuckyExcel.transformExcelToLucky(files[0], function (exportJson, luckysheetfile) {
    

          if (exportJson.sheets == null || exportJson.sheets.length == 0) {
    
            alert("Failed to read the content of the excel file, currently does not support xls files!");
            return;
          }
          window.luckysheet.destroy();
          that.sheetOption.title = exportJson.info.name;
          that.sheetOption.data = exportJson.sheets;
          console.log(' Look at this structure ',that.sheetOption)

          window.luckysheet.create(that.sheetOption);
        });
      },

      transmission() {
    
        console.log(window.luckysheet.getAllSheets())
      }
    }
  }
</script>

<style lang="scss">
  .luckysheet-container {
    
    width: 100%;
    height: 100%;
    padding: 10px;
    box-sizing: border-box;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
  }
  .luckysheet-input-box {
    
    color: #000;
    z-index: 1000; /* The specific value depends on the actual situation , Need more than the other elements below z-index Big */
  }
  #luckysheet {
    
    /*margin: 0px;*/
    /*padding: 0px;*/
    /*position: absolute;*/
    width: 100%;
    flex: 1;
    /*left: 0px;*/
    /*top: 30px;*/
    /*bottom: 0px;*/
  }
</style>