Javascript JSON to Excel file download

Question

I have Json data and i need convert json data to Excel file using javascript,

Reference URL : http://jsfiddle.net/hybrid13i/JXrwM/

i am using this code:

Answer 1

I've created a class to export json data to excel file. I'll be happy if some productive edit is made in my code.

Just add the class in your JS library and call:

var myTestXML = new myExcelXML(myJsonArray);
myTestXML.downLoad();

My myExcelXML Class:

let myExcelXML = (function() {
    let Workbook, WorkbookStart = '';
    const WorkbookEnd = '';
    let fs, SheetName = 'SHEET 1',
        styleID = 1, columnWidth = 80,
        fileName = "Employee_List", uri, link;

    class myExcelXML {
        constructor(o) {
            let respArray = JSON.parse(o);
            let finalDataArray = [];

            for (let i = 0; i < respArray.length; i++) {
                finalDataArray.push(flatten(respArray[i]));
            }

            let s = JSON.stringify(finalDataArray);
            fs = s.replace(/&/gi, '&');
        }

        downLoad() {
            const Worksheet = myXMLWorkSheet(SheetName, fs);

            WorkbookStart += myXMLStyles(styleID);

            Workbook = WorkbookStart + Worksheet + WorkbookEnd;

            uri = 'data:text/xls;charset=utf-8,' + encodeURIComponent(Workbook);
            link = document.createElement("a");
            link.href = uri;
            link.style = "visibility:hidden";
            link.download = fileName + ".xls";

            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
        }

        get fileName() {
            return fileName;
        }

        set fileName(n) {
            fileName = n;
        }

        get SheetName() {
            return SheetName;
        }

        set SheetName(n) {
            SheetName = n;
        }

        get styleID() {
            return styleID;
        }

        set styleID(n) {
            styleID = n;
        }
    }

    const myXMLStyles = function(id) {
        let Styles = '';

        return Styles;
    }

    const myXMLWorkSheet = function(name, o) {
        const Table = myXMLTable(o);
        let WorksheetStart = '';
        const WorksheetEnd = '';

        return WorksheetStart + Table + WorksheetEnd;
    }

    const myXMLTable = function(o) {
        let TableStart = '';
        const TableEnd = '';

        const tableData = JSON.parse(o);

        if (tableData.length > 0) {
            const columnHeader = Object.keys(tableData[0]);
            let rowData;
            for (let i = 0; i < columnHeader.length; i++) {
                TableStart += myXMLColumn(columnWidth);

            }
            for (let j = 0; j < tableData.length; j++) {
                rowData += myXMLRow(tableData[j], columnHeader);
            }
            TableStart += myXMLHead(1, columnHeader);
            TableStart += rowData;
        }

        return TableStart + TableEnd;
    }

    const myXMLColumn = function(w) {
        return '';
    }


    const myXMLHead = function(id, h) {
        let HeadStart = '';
        const HeadEnd = '';

        for (let i = 0; i < h.length; i++) {
            const Cell = myXMLCell(h[i].toUpperCase());
            HeadStart += Cell;
        }

        return HeadStart + HeadEnd;
    }

    const myXMLRow = function(r, h) {
        let RowStart = '';
        const RowEnd = '';
        for (let i = 0; i < h.length; i++) {
            const Cell = myXMLCell(r[h[i]]);
            RowStart += Cell;
        }

        return RowStart + RowEnd;
    }

    const myXMLCell = function(n) {
        let CellStart = '';
        const CellEnd = '';

        const Data = myXMLData(n);
        CellStart += Data;

        return CellStart + CellEnd;
    }

    const myXMLData = function(d) {
        let DataStart = '';
        const DataEnd = '';

        return DataStart + d + DataEnd;
    }

    const flatten = function(obj) {
        var obj1 = JSON.parse(JSON.stringify(obj));
        const obj2 = JSON.parse(JSON.stringify(obj));
        if (typeof obj === 'object') {
            for (var k1 in obj2) {
                if (obj2.hasOwnProperty(k1)) {
                    if (typeof obj2[k1] === 'object' && obj2[k1] !== null) {
                        delete obj1[k1]
                        for (var k2 in obj2[k1]) {
                            if (obj2[k1].hasOwnProperty(k2)) {
                                obj1[k1 + '-' + k2] = obj2[k1][k2];
                            }
                        }
                    }
                }
            }
            var hasObject = false;
            for (var key in obj1) {
                if (obj1.hasOwnProperty(key)) {
                    if (typeof obj1[key] === 'object' && obj1[key] !== null) {
                        hasObject = true;
                    }
                }
            }
            if (hasObject) {
                return flatten(obj1);
            } else {
                return obj1;
            }
        } else {
            return obj1;
        }
    }

    return myExcelXML;
})();