Expression Validator

Expression validator

                        

    
        Survey.StylesManager.applyTheme("orange");
    


var json = {
   "elements": [
    {
     "type": "rating",
     "name": "serviceRate",
     "title": "How do you rate our service?",
     "isRequired": true,
     "rateMax": 10
    },
    {
     "type": "comment",
     "name": "serviceComment",
     "title": "Please write us your opinion about the service (required if you rate us 7 or higher)",
     "validators": [
      {
       "type": "expression",
       "text": "Please tell us your opinion.",
       "expression": "{serviceRate} < 7 or {serviceComment} notempty"
      }
     ]
    }
   ]
};

window.survey = new Survey.Model(json);


    survey.onComplete.add(function(result) {
        document.querySelector('#surveyResult').textContent =
            "Result JSON:\n" + JSON.stringify(result.data, null, 3);
    });


ReactDOM.render(<Survey.Survey model={survey}  />, document.getElementById("surveyElement"));


                    
<!DOCTYPE html>
<html>
<head>
    <title>Expression validator, Reactjs Survey Library Example</title>


    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.6.0/polyfill.js"></script>
    <script src="https://unpkg.com/react@15/dist/react.js"></script>
    <script src="https://unpkg.com/react-dom@15/dist/react-dom.js"></script>
    <script src="https://unpkg.com/@babel/standalone@7.2.5/babel.min.js"></script>
<script src="https://surveyjs.azureedge.net/1.1.15/survey.react.js"></script>
<link href="https://surveyjs.azureedge.net/1.1.15/survey.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

</head>
<body>
                <div id="surveyElement">
            </div>
    <div id="surveyResult"></div>

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

</body>
</html>