javascript file download

download.js

function downloadCSV(content, filename) {
  download(content, 'text/csv', filename + '.csv')
}

/**
 * @param {string} content - The file content in raw string format
 * @param {string} type - The filetype eg. text/plain, application/json, image/svg
 * @param {string} filename - The filename with extension
 */
function download(content, type, filename) {
    let link = document.createElement("a");

    let data = new Blob([content], { type });
    let url = URL.createObjectURL(data);
    link.href = url;

    link.style.cssText += ";visibility:hidden";
    link.download = filename;

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