Cart Licenses Contact Support Online Creator Login/Register
Try
Free
v 1.9.38

Run Expression Trigger


                        
        
            Survey.StylesManager.applyTheme("defaultV2");
        

function setOfficialCountryName(params) {
    if (params.length < 2)
        return;
    var country = params[0];
    var officialName = params[1];
    var survey = this.survey;
    if (!country || !country.length) {
        survey.clearValue(officialName);
        return;
    }
    survey.setVariable("request_processing", true);
    survey.setVariable("request_error", null);
    country = country
        .charAt(0)
        .toUpperCase() + country
        .slice(1)
        .toLowerCase();
    $.ajax({
        url: "https://surveyjs.io/api/CountriesExample?name=" + country,
        type: "GET",
        success: function (data) {
            if (!!data && data.length > 0) {
                var countryValue = data[0];
                survey.setValue(officialName, countryValue.officialName);
                survey.setVariable("hasError", false);
            } else {
                survey.setVariable("hasError", true);
                survey.setVariable("request_error", "The country is not found.");
                survey.clearValue(officialName);
            }
                survey.setVariable("request_processing", false);
        },
        error: function (xhr, ajaxOptions, thrownError) {
            survey.setVariable("hasError", true);
            survey.setVariable("request_error", "The country is not found.");
            survey.clearValue(officialName);
        }
    });
}

Survey.FunctionFactory.Instance.register("setOfficialCountryName", setOfficialCountryName);

                
                    var json = {
  "elements": [
    {
      "type": "text",
      "name": "country",
      "title": "Please enter the country"
    },
    {
      "type": "html",
      "name": "requesting",
      "html": "The data is requesting",
      "visibleIf": "{request_processing} = true"
    },
    {
      "type": "text",
      "name": "name_official",
      "title": "Official name is:",
      "readOnly": true,
      "visibleIf": "{name_official} notempty"
    },
    {
      "type": "html",
      "name": "error",
      "html": "The following error has happened: <b>{request_error}</b>",
      "visibleIf": "{hasError} = true"
    }
  ],
  "triggers": [
    {
      "type": "runexpression",
      "expression": "{country} notempty or {country} empty",
      "runExpression": "setOfficialCountryName({country}, 'name_official')"
    }
  ]
};

                    window.survey = new Survey.Model(json);
                
        
            survey.onComplete.add(function(sender) {
            document.querySelector('#surveyResult').textContent =
            "Result JSON:\n" + JSON.stringify(sender.data, null, 3);
            });
        
        
            $("#surveyElement").Survey({
            model: survey 
            });
        

                    
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Run Expression Trigger, jQuery Survey Library Example</title>
    
<meta name="viewport" content="width=device-width" />
    <script src="https://unpkg.com/jquery"></script>
    <script src="/DevBuilds/survey-jquery/survey.jquery.min.js"></script>
    <link href="/DevBuilds/survey-core/defaultV2.min.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

</head>
<body style="margin: 0">
    
            <div id="surveyElement" style="display:inline-block;width:100%;">
            </div>
    <div id="surveyResult"></div>

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

</body>
</html>
Dismiss

Tell us what you think

Help us serve you better by taking this brief
survey. We are interested to learn more about
your experience of using our libraries.

We'd really appreciate your feedback.

Approximate time to complete: 2 min.

Start the survey