SurveyCreator.StylesManager.applyTheme("bootstrap");
    

var options = {  };
//create the SurveyJS Creator, but do not render it yet.
var creator = new SurveyCreator.SurveyCreator(null, options);
//Show toolbox in the right container. It is shown on the left by default
creator.showToolbox = "right";
//Show property grid in the right container, combined with toolbox
creator.showPropertyGrid = "right";
//Make toolbox active by default
creator.rightContainerActiveItem("toolbox");

//Add a new tab as the first one
creator.tabs().unshift({
    name: "survey-templates", //the unique tab name
    title: "Survey Templates", //the tab title
    template: "custom-tab-survey-templates", //you will see the knockout template in the HTML tab
    action: () => {
        //change the active tab to this one on clicking the tab
        creator.makeNewViewActive("survey-templates");
    },
    data: {
        title: "Survey templates list",
        surveys: loadedSurveyTemplates(), //to make code clean, get the array of templates name and jsons from another function
        load: function(item) {
            //load the item json into creator
            creator.JSON = item.json;
            //make the 'designer' tab active
            creator.makeNewViewActive("designer");
        }
    }
});

//Render Creator in div with id equals to "creatorElement"
creator.render("creatorElement");

function loadedSurveyTemplates() {
    return [
        {
            name: "NPS",
            json: getNPSJSON()
        },
        { 
            name: "Dummy checkbox survey", 
            json: getDummyCheckboxJSON() 
        },
        {
            name: "Empty Survey",
            json: {}
        }
    ];
}

function getNPSJSON() {
    return {
 "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": [
      "Performance",
      "Stability",
      "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"
};
}

function getDummyCheckboxJSON() {
    return { questions: [
    { type: "checkbox", name: "car", title: "What car are you driving?", isRequired: true, hasNone:  true,
     colCount: 4, choices: ["Ford", "Vauxhall", "Volkswagen", "Nissan", "Audi", "Mercedes-Benz", "BMW", "Peugeot", "Toyota", "Citroen"] }
    ]};
}
                    

<!DOCTYPE html>
<html lang="en">
<head>
    <title>You may add new custom tab into the creator, Survey Creator Example</title>

<meta name="viewport" content="width=device-width" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.0/knockout-min.js"></script>
<script src="https://surveyjs.azureedge.net/1.5.18/survey.ko.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.0/ace.min.js" type="text/javascript" charset="utf-8"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.0/ext-language_tools.js" type="text/javascript" charset="utf-8"></script>
    <!-- Uncomment to enable Select2
    <script src="https://unpkg.com/jquery"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>
    -->
    <link href="https://surveyjs.azureedge.net/1.5.18/survey-creator.css" type="text/css" rel="stylesheet" />
    <script src="https://surveyjs.azureedge.net/1.5.18/survey-creator.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css">
    <link rel="stylesheet" href="./index.css">

</head>
<body>
    
<script type="text/html" id="custom-tab-survey-templates">
    <h3 data-bind="text: title"></h3>
    <table class="table" style="width:300px">
        <thead>
        <th>Template Name</th>
        <th></th>
        </thead>
        <tbody>
            <!-- ko foreach: surveys -->
            <tr>
                <td data-bind="text:name"></td>
                <td><button data-bind="click:$parent.load($data)">Load...</button></td>
            </tr>
            <!-- /ko -->
        </tbody>
    </table>
</script>
    <div id="surveyContainer">
        <div id="creatorElement"></div>
    </div>

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

</body>
</html>