Calculate expression based on other answers in Panel Dynamic, Knockoutjs Survey Library Example

Expressions in Panel Dynamic

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            Survey.StylesManager.applyTheme("modern");
        


            
                var json = {
   "showQuestionNumbers": "off",
   "elements": [
      {
         "type": "paneldynamic",
         "name": "items",
         "title": "Items",
         "keyName": "name",
         "showQuestionNumbers": "off",
         "templateTitle": "item #{panelIndex}",
        "templateElements": [
          {
            "type": "text",
            "name": "name",
            "title": "Name:",
            "isRequired": true
          },
          {
            "type": "text",
            "name": "cost",
            "inputType": "number",
            "title": "Item Cost:",
            "isRequired": true,
            "startWithNewLine": false
          },
          {
            "type": "text",
            "name": "vendor",
            "title": "Vendor:",
            "isRequired": true
          },
          {
            "type": "text",
            "name": "quantity",
            "inputType": "number",
            "title": "Quantity:",
            "isRequired": true,
            "startWithNewLine": false
          },
          {
            "type": "text",
            "name": "link",
            "title": "Link:",
            "isRequired": true
          },
          {
            "type": "expression",
            "name": "total",
            "title": "Total Item Cost:",
            "expression": "{panel.cost} * {panel.quantity}",
            "displayStyle": "currency",
            "currency": "EUR",
            "startWithNewLine": false
          }
        ],
         "minPanelCount": 1,
         "panelAddText": "Add another  item",
         "panelRemoveText": "Remove item"
      },
      {
         "type": "panel",
         "title": "Totals",
         "elements": [
            {
               "type": "expression",
               "name": "totalQuantity",
               "title": "Total  Quantity:",
               "expression": "sumInArray({items}, 'quantity')"
            },
            {
               "type": "expression",
               "name": "totalCost",
               "title": "Total Cost:",
               "expression": "sumInArray({items}, 'total')",
               "displayStyle": "currency",
               "currency": "EUR",
               "startWithNewLine": false
            }
         ]
      }
   ]
};

                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 lang="en">
<head>
    <title>Calculate expression based on other answers in Panel Dynamic, 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 href="/DevBuilds/survey-knockout/modern.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

</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>

Expressions in Panel Dynamic

Calculate expression based on other answers in Panel Dynamic

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