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(sender) {
document.querySelector('#surveyResult').textContent =
"Result JSON:\n" + JSON.stringify(sender.data, null, 3);
});
survey.render("surveyElement");
<!DOCTYPE html>
<html lang="en">
<head>
<title>Expressions 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-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/modern.min.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>