【Javascript】匯出txt

因為有將 Log 直接寫進 html 裡面
所以就想說將網頁上的純文字內容輸出為一個 txt 檔案
saveTextAsFile function 內有兩個參數
第一個參數 _fileName 為預設在本地端存檔的檔名
第二個參數 _text 為輸出的純文字內容

function saveTextAsFile( _fileName, _text ) {
    var textFileAsBlob = new Blob([_text], {type:'text/plain'});

    var downloadLink = document.createElement("a");
    downloadLink.download = _fileName;
    downloadLink.innerHTML = "Download File";
    if (window.webkitURL != null) {
        // Chrome allows the link to be clicked
        // without actually adding it to the DOM.
        downloadLink.href = window.webkitURL.createObjectURL(textFileAsBlob);
    } else {
        // Firefox requires the link to be added to the DOM
        // before it can be clicked.
        downloadLink.href = window.URL.createObjectURL(textFileAsBlob);
        downloadLink.onclick = destroyClickedElement;
        downloadLink.style.display = "none";
        document.body.appendChild(downloadLink);
    }

    downloadLink.click();
}

function destroyClickedElement(event) {
    document.body.removeChild(event.target);
}