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songyz-xlsx

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songyz-xlsx

Excel (XLSB/XLSX/XLSM/XLS/XML) and ODS spreadsheet parser and writer (extended to enable read/write of cell formats with xlsx files)

  • 0.1.1
  • Source
  • npm
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3
Maintainers
1
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Introduction

songyz-xlsx is a tool for working with Excel, It is based on js-xlsx extended development to achieve some of the company's business needs, if there is a problem, you can reply about js-xlsxcomment on the message, convenient for everyone to learn and progress together.

Features

- import about date field

- import about number field
  - About the scientific counting method

Getting started

# with npm install dependency
npm install songyz-xlsx --save


# core code
# import example
import XLSX from 'songyz-xlsx'

export const importSlsx = (file, opts) => {
    return new Promise(function (resolve, reject) {
        const reader = new FileReader()
        reader.onload = function (e) {
            opts = opts || {};

            opts.type = 'binary';
            opts._dateType = opts._dateType || 1; //1,"yyyy-MM-dd hh:mm",2,时间戳
            opts._numberType = opts._numberType || 1; //1,不适用科学计数法,2,使用科学计数法

            const wb = XLSX.read(e.target.result, opts);
            resolve(Object.keys(wb.Sheets).map(key => XLSX.utils.sheet_to_json(wb.Sheets[key])).reduce((prev, next) => prev.concat(next)))
        }
        reader.readAsBinaryString(file.raw)
    })
}

# export example 
export const exportXlsx = (dataArray, fileName) => {
    let type = 'xlsx';
    dataArray = dataArray || [{}];
    fileName = fileName || 'file';

    var keyMap = Object.keys(dataArray[0]);
    var title = {};
    keyMap.forEach(key => title[key] = key);
    dataArray.unshift(title);

    var sheetData = [];

    dataArray.map((row, i) => {
        let style = i == 0 ? titleStyle : bodyStyle;
        return keyMap.map((key, j) => {
            return {
                style: style,
                value: row[key],
                position: (j > 25 ? getCharCol(j) : String.fromCharCode(65 + j)) + (i + 1)
            };
        })
    }).reduce((prev, next) => prev.concat(next)).forEach((cell, i) =>
        sheetData[cell.position] = {
            v: cell.value,
            s: cell.style
        }
    );
    var outputPos = Object.keys(sheetData); 

    var wb = {
        SheetNames: ['mySheet'], 
        Sheets: {
            'mySheet': Object.assign({},
                sheetData, 
                {
                    '!ref': outputPos[0] + ':' + outputPos[outputPos.length - 1] 
                }
            )
        }
    };
    
    var buffer = XLSX.write(wb, { bookType: type, bookSST: false, type: 'buffer' });

    writeFile(fileName + "." + type, buffer);
}


Donate

If you find this project useful, you can buy author a glass of juice :tropical_drink:

donate

License

MIT

Copyright (c) 2019-present songyz

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Package last updated on 16 Oct 2019

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