Only One Time Survey

Allow your clients/users run survey only one time.
survey.clientId:

                        var currentClientId = 'e2bd506a-a218-4f5c-b8ae-768f203e399b';

function runSurveyCheck() {
    currentClientId = document.getElementById('clientIdinput').value || currentClientId;
    //surveyId is null - use the previous surveyId
    survey.loadSurveyFromService(null, currentClientId);
}

    
        Survey.StylesManager.applyTheme("orange");
    


var json = {
	surveyId: 'e7866476-e901-4ab7-9f38-574416387f73',
	surveyPostId: 'df2a04fb-ce9b-44a6-a6a7-6183ac555a68',
	clientId: currentClientId
};

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


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


survey.render("surveyElement");


                    
<!DOCTYPE html>
<html>
<head>
    <title>Allow your clients/users run survey only one time., Knockoutjs Survey Library Example</title>


    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.0/knockout-min.js"></script>
<script src="https://surveyjs.azureedge.net/1.1.15/survey.ko.js"></script>
<link href="https://surveyjs.azureedge.net/1.1.15/survey.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

</head>
<body>
    <dl>
    <dt>survey.clientId:</dt>
    <dd> <input id="clientIdinput" placeholder="e2bd506a-a218-4f5c-b8ae-768f203e399b" style="width:80%"/> </dd>
</dl>
<button onclick="runSurveyCheck()">Rerun Survey with new clientId</button>
<hr/>            <div id="surveyElement">
            </div>
    <div id="surveyResult"></div>

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

</body>
</html>

Send the survey results before moving on the next Page default is false.

If you have a long survey, many your users may not finish the survey and enter the data on few pagers on only the first one. If you still want to save the information from incompleted surveys, set this property to true. The clientId property should bet set correctly, otherwise the data of others users may be ovewritten. 

survey.sendResultOnPageNext = yourvalue;