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v 1.7.25
v 1.7.25
Overview Examples Docs Source Download

Expression Validator

Expression validator


                        
        
            Survey.StylesManager.applyTheme("default");
        


            
                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);
            });
        
        
            var app = new Vue({
            el: '#surveyElement',
            data:
            {
            survey: survey
            }
            });
        

                    
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Expression validator, Vue Survey Library Example</title>

<meta name="viewport" content="width=device-width" />
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://surveyjs.azureedge.net/1.7.25/survey.vue.js"></script>
<link href="https://surveyjs.azureedge.net/1.7.25/survey.css" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

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

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

</body>
</html>