Use markdown to render images in title and question elements, Knockoutjs Survey Library Example

Markdown Radiogroup (Marked)

Open in new window

Result
JavaScript
HTML
Documentation
QR Code


                        
        
            Survey.StylesManager.applyTheme("bootstrap");
            Survey.defaultBootstrapCss.navigationButton = "btn btn-green";
        


            
                var json = {
  "elements": [
    {
      "type": "radiogroup",
      "hasOther": true,
      "isRequired": true,
      "name": "favoritePet",
      "title": "What is your favorite pet ![A parrot](https://surveyjs.io/Content/Images/examples/markdown/image_16x16.svg '=16x16') ?",
      "choices": [
        {
          "value": "dog",
          "text": "Dog: ![A dog](https://surveyjs.io/Content/Images/examples/markdown/dog.svg '=14x14')"
        },
        {
          "value": "cat",
          "text": "Cat: ![A cat](https://surveyjs.io/Content/Images/examples/markdown/cat.svg '=14x14')"
        },
        {
          "value": "parrot",
          "text": "Parrot ![A parrot](https://surveyjs.io/Content/Images/examples/markdown/parrot.svg '=14x14')"
        }
      ]
    }
  ]
}
;

                window.survey = new Survey.Model(json);
            
        
            survey.onComplete.add(function(sender) {
            document.querySelector('#surveyResult').textContent =
            "Result JSON:\n" + JSON.stringify(sender.data, null, 3);
            });
        
//Make Marked support specifying image size in pixels
const renderer = {
    image: function (src, title, alt) {
        const exec = /=\s*(\d*)\s*x\s*(\d*)\s*$/.exec(title);
        let res = '<img src="' + src + '" alt="' + alt;
        if (exec && exec[1]) res += '" height="' + exec[1];
        if (exec && exec[2]) res += '" width="' + exec[2];
        return res + '">';
    },
};

marked.use({ renderer });

survey.onTextMarkdown.add(function (survey, options) {
    //convert the markdown text to html
    var str = marked.marked(options.text);
    // remove root paragraphs <p></p>
    str = str.substring(3);
    str = str.substring(0, str.length - 5);
    // set html
    options.html = str;
});            
                survey.render("surveyElement");

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Use markdown to render images in title and question elements, Knockoutjs Survey Library Example</title>

<meta name="viewport" content="width=device-width" />
    <script src="https://unpkg.com/knockout@3.5.1/build/output/knockout-latest.js"></script>
    <script src="/DevBuilds/survey-knockout/survey.ko.min.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css">
    <link rel="stylesheet" href="./index.css">
<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
</head>
<body>
    
            <div id="surveyElement" style="display:inline-block;width:100%;">
            </div>
    <div id="surveyResult"></div>

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

</body>
</html>

Markdown Radiogroup (Marked)

Use markdown to render images in title and question elements

Why We Use Cookies