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v 1.9.50

Signature Pad


                        
        
            Survey.StylesManager.applyTheme("defaultV2");
        



                
                    var json = {
   "elements": [
    {
      "type": "signaturepad",
      "name": "signature",
      "title": "Please sign your answers here"
    }
   ]
};

                    window.survey = new SurveyKnockout.Survey(json);
                
        
            survey.onComplete.add(function(sender) {
            document.querySelector('#surveyResult').textContent =
            "Result JSON:\n" + JSON.stringify(sender.data, null, 3);
            });
        
            
                survey.render("surveyElement");
            

                    
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Signature Pad, 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-core/survey.core.min.js"></script>
    <script src="/DevBuilds/survey-core/survey.i18n.min.js"></script>
    <script src="/DevBuilds/survey-knockout-ui/survey-knockout-ui.min.js"></script>
    <link href="/DevBuilds/survey-core/defaultV2.min.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

</head>
<body style="margin: 0">
    
            <div id="surveyElement" style="display:inline-block;width:100%;">
            </div>
    <div id="surveyResult"></div>

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

</body>
</html>
Settings

survey.getQuestionByName('signature').signatureWidth;

survey.getQuestionByName('signature').signatureHeight;

var q = survey.getQuestionByName('signature');
q.allowClear = yourvalue;