Survey.StylesManager.applyTheme("defaultV2");
function rowsWithValue(params) {
if (!params && params.length < 2) return false;
var matrixValue = params[0];
var value = params[1];
var rowCount = 0;
for(var key in matrixValue) {
if(matrixValue[key] == value) rowCount++;
}
return rowCount;
}
Survey.FunctionFactory.Instance.register("rowsWithValue", rowsWithValue);
var json = {
"elements": [
{
"type": "matrix",
"name": "quality",
"title": "Please indicate if you agree or disagree with the following statements",
"columns": [
{
"value": "agree",
"text": "Agree"
},
{
"value": "disagree",
"text": "Disagree"
}
],
"rows": [
{
"value": "affordable",
"text": "Product is affordable"
},
{
"value": "doeswhatitclaims",
"text": "Product does what it claims"
},
{
"value": "betterthanother",
"text": "Product is better than other products on the market"
},
{
"value": "easytouse",
"text": "Product is easy to use"
}
]
},
{
"type": "comment",
"name": "disappointedComment",
"title": "We are really sorry that our products doesn't suite your needs. Could provide us with some comments to help us imporove it?",
"visibleIf": "rowsWithValue({quality}, 'disagree') >= 3"
},
{
"type": "comment",
"name": "approvedComment",
"title": "Thank you for appreciating our product. Could provide us with some comments to make it event better?",
"visibleIf": "rowsWithValue({quality}, 'agree') >= 3"
}
]
};
window.survey = new Survey.Model(json);
survey.onComplete.add(function(sender) {
document.querySelector('#surveyResult').textContent =
"Result JSON:\n" + JSON.stringify(sender.data, null, 3);
});
ReactDOM.render(
<SurveyReact.Survey model={survey} />, document.getElementById("surveyElement"));
<!DOCTYPE html>
<html lang="en">
<head>
<title>Use custom function in expressions, Reactjs Survey Library Example</title>
<meta name="viewport" content="width=device-width" />
<script src="https://unpkg.com/react@17.0.1/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom@17.0.1/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/@babel/standalone@7.2.5/babel.min.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-react-ui/survey-react-ui.min.js"></script>
<link href="/DevBuilds/survey-core/defaultV2.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/babel" src="./index.js"></script>
</body>
</html>