Example of save PDF as file, string, blob or base64, jQuery Survey Library Example

<!DOCTYPE html>
<html>
    <head>
        <title>Example of save PDF as file, string, blob or base64, jQuery Survey Library Example</title>

        <meta name="viewport" content="width=device-width, initial-scale=1">
        <script src="https://unpkg.com/jquery"></script>
        <script src="https://surveyjs.azureedge.net/1.1.17/survey.jquery.js"></script>
        <link href="https://surveyjs.azureedge.net/1.1.17/survey.css" type="text/css" rel="stylesheet"/>
        <link rel="stylesheet" href="./index.css">
        <script src="https://unpkg.com/jspdf@latest/dist/jspdf.min.js"></script>
        <script src="https://surveyjs.azureedge.net/1.1.17/survey.pdf.js"></script>
    </head>
    <body>
        <button id="saveAsFileBtn" style="margin:10px">Save as File</button>
        <button id="saveAsStringBtn" style="margin:10px">Save as String</button>
        <button id="saveAsBlobBtn" style="margin:10px">Save as Blob</button>
        <button id="pdfPreviewBtn" style="margin:10px">PDF Preview</button>
        <div id="pdf-preview"></div>
        <div id="surveyElement"></div>
        <div id="surveyResult"></div>

        <script type="text/javascript" src="./index.js"></script>

    </body>
</html>

function renderSurvey(survey, element) {
    survey.render(element);
}

Survey
    .StylesManager
    .applyTheme("default");

var json = {
    "questions": [
        {
            "type": "text",
            "name": "savepdf",
            "title": "Save me, pleaseee"
        },
        {
            "type": "dropdown",
            "name": "select",
            "title": "Select",
            "choices":[{ displayValue: 1, text: "Value 1" }, { displayValue: 2, text: "Value 2" }]
        }
    ]
};

window.survey = new Survey.Model(json);

survey
    .onComplete
    .add(function (result) {
        document
            .querySelector('#surveyResult')
            .textContent = "Result JSON:\n" + JSON.stringify(result.data, null, 3);
    });

$("#surveyElement").Survey({model: survey});

function saveSurveyToPdf(filename, surveyModel, saveType) {
    var surveyPDF = new SurveyPDF.SurveyPDF(json);
    surveyPDF.data = surveyModel.data;
    if (saveType === "saveAsFile") {
        surveyPDF.save(filename);
    } else if (saveType === "saveAsString") {
        surveyPDF
            .raw()
            .then(function (text) {
                var file = new Blob([text], {type: "application/pdf"});
                var a = document.createElement("a");
                a.href = URL.createObjectURL(file);
                a.download = filename;
                document
                    .body
                    .appendChild(a);
                a.click();
            });
    } else if (saveType === "saveAsBlob") {
        surveyPDF
            .raw("bloburl")
            .then(function (bloburl) {
                var a = document.createElement("a");
                a.href = bloburl;
                a.download = filename;
                document
                    .body
                    .appendChild(a);
                a.click();
            });
    } else {
        var oldFrame = document.getElementById("pdf-preview-frame");
        if (oldFrame) 
            oldFrame
                .parentNode
                .removeChild(oldFrame);
        surveyPDF
            .raw("dataurlstring")
            .then(function (dataurl) {
                var pdfEmbed = document.createElement("embed");
                pdfEmbed.setAttribute("id", "pdf-preview-frame");
                pdfEmbed.setAttribute("type", "application/pdf");
                pdfEmbed.setAttribute("style", "width:100%");
                pdfEmbed.setAttribute("height", 200);
                pdfEmbed.setAttribute("src", dataurl);
                var previewDiv = document.getElementById("pdf-preview");
                previewDiv.appendChild(pdfEmbed);
            });
    }
}
document
    .getElementById("saveAsFileBtn")
    .onclick = function () {
        saveSurveyToPdf("surveyAsFile.pdf", survey, "saveAsFile");
    }
document
    .getElementById("saveAsStringBtn")
    .onclick = function () {
        saveSurveyToPdf("surveyAsString.pdf", survey, "saveAsString");
    }
document
    .getElementById("saveAsBlobBtn")
    .onclick = function () {
        saveSurveyToPdf("surveyAsBlob.pdf", survey, "saveAsBlob");
    }
document
    .getElementById("pdfPreviewBtn")
    .onclick = function () {
        saveSurveyToPdf("", survey, "pdfPreview");
    }