change XLSX column datatype to number in Angular 5

问题

i am using xlsx library for export to excel ("xlsx": "0.16.1")

i have three columns with thousand separator number, so when i export that data then it will consider as a string, but i want number type, here is code of Export to Excel file

public downloadExcel(json: any[], excelFileName: string, merges?: any): void {
    let worksheet: XLSX.WorkSheet;
    if (merges) {
        worksheet = XLSX.utils.aoa_to_sheet(json);
        worksheet['!merges'] = merges;
    } else {
        worksheet = XLSX.utils.json_to_sheet(json);
    }

    const workbook: XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };

    var fmt = '0'; 
    workbook.Sheets['data']['C2'].z = fmt;

    const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' });
    this.saveAsExcelFile(excelBuffer, excelFileName);
}

private saveAsExcelFile(buffer: any, fileName: string): void {
    const data: Blob = new Blob([buffer], {
        type: 'application/octet-stream'
    });
    FileSaver.saveAs(data, fileName + "_" + new Date().toLocaleDateString() + "_" + new Date().toLocaleTimeString() + EXCEL_EXTENSION);
}

so i want to change C,D,E,F column data type, so i can directly SUM that column,

回答1:

Before generating Excel from JSON, modify JSON by removing Comma(,) from numbers and convert them into numbers like:

parseInt('10,340'.replace(/,/g, ''))

This way you will store the number without comma so Excel will consider that column as a number automatically.

Let me know if you have any questions.

------------EDIT------------

You can replace the comma(,) from the original number as shown above and use column formatting #,##0.00. This way it will display comma at every thousand points but actually it will store it as a number so you can do all arithmetic operations

来源：https://stackoverflow.com/questions/62154444/change-xlsx-column-datatype-to-number-in-angular-5

标签

excel

angular5

XLSX