NPS Survey

NPS survey with follow-up questions


var json = {
 "completedHtml": "<h3>Thank you for your feedback.</h3> <h5>Your thoughts and ideas will help us to create a great product!</h5>",
 "completedHtmlOnCondition": [
   "expression": "{nps_score} > 8",
   "html": "<h3>Thank you for your feedback.</h3> <h5>We glad that you love our product. Your ideas and suggestions will help us to make our product even better!</h5>"
   "expression": "{nps_score} < 7",
   "html": "<h3>Thank you for your feedback.</h3> <h5> We are glad that you share with us your ideas.We highly value all suggestions from our customers. We do our best to improve the product and reach your expectation.</h5>\n"
 "pages": [
   "name": "page1",
   "elements": [
     "type": "rating",
     "name": "nps_score",
     "title": "On a scale of zero to ten, how likely are you to recommend our product to a friend or colleague?",
     "isRequired": true,
     "rateMin": 0,
     "rateMax": 10,
     "minRateDescription": "(Most unlikely)",
     "maxRateDescription": "(Most likely)"
     "type": "checkbox",
     "name": "promoter_features",
     "visibleIf": "{nps_score} >= 9",
     "title": "What features do you value the most?",
     "isRequired": true,
     "validators": [
       "type": "answercount",
       "text": "Please select two features maximum.",
       "maxCount": 2
     "hasOther": true,
     "choices": [
      "User Interface",
      "Complete Functionality"
     "otherText": "Other feature:",
     "colCount": 2
     "type": "comment",
     "name": "passive_experience",
     "visibleIf": "{nps_score} > 6  and {nps_score} < 9",
     "title": "What is the primary reason for your score?"
     "type": "comment",
     "name": "disappointed_experience",
     "visibleIf": "{nps_score} notempty",
     "title": "What do you miss and what was disappointing in your experience with us?"
 "showQuestionNumbers": "off"

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

survey.onComplete.add(function(result) {
    document.querySelector('#surveyResult').innerHTML = "result: " + JSON.stringify(;


<!DOCTYPE html>
    <title>NPS survey with follow-up questions, Knockoutjs Survey Library Example</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src=""></script>
<script src=""></script>
<link href="" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

                <div id="surveyElement">
    <div id="surveyResult"></div>

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