function download(blob, filename) { const objectURL = window.URL.createObjectURL(blob), a = document.createElement('a'), e = document.createEvent('MouseEvent'); //a要素のdownload属性にファイル名を設定 a.download = filename; a.href = objectURL; //clickイベントを着火 e.initEvent("click", true, true, window, 1, 0, 0, 0, 0, false, false, false, false, 0, null); a.dispatchEvent(e); } //使用例 download(new Blob(['hello world']
