Angular 4: How to read data from Excel?

Question

I am not able to get data from an Excel sheet in Angular 4. Below is my code sample.

HTML code:

Answer 1

    readfile() {
    // You can change the file path in the assets folder
    let url = "/assets/template.xlsx";
    let req = new XMLHttpRequest();
    req.open("GET", url, true);
    req.responseType = "arraybuffer";
    req.onload =  (e) => {
        let data = new Uint8Array(req.response);
        let workbook = XLSX.read(data, {type: "array"});
        const excelBuffer: any = XLSX.write(workbook, {bookType: 'xlsx', type: 'array'});
        // TO export the excel file
        this.saveAsExcelFile(excelBuffer, 'X');
    };
    req.send();
}

You can take this code and change the path to your file; for the last line is for export it. To know more about it i suggest to visit the official doc of js-xlsx https://github.com/SheetJS/js-xlsx