Ask users to choose a value from same columns for one or several rows - Matrix question



var json = {questions: [
{ type: "matrix", name: "Quality", title: "Please indicate if you agree or disagree with the following statements",
   columns: [{ value: 1, text: "Strongly Disagree" }, 
              { value: 2, text: "Disagree" }, 
              { value: 3, text: "Neutral" }, 
              { value: 4, text: "Agree" }, 
              { value: 5, text: "Strongly Agree" }],
    rows: [{ value: "affordable", text: "Product is affordable" }, 
           { value: "does what it claims", text: "Product does what it claims" },
           { value: "better then others", text: "Product is better than other products on the market" }, 
           { value: "easy to use", text: "Product is easy to use" }]}

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

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

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

<!DOCTYPE html>
    <title>Ask users to choose a value from same columns for one or several rows - Matrix question, Reactjs Survey Library Example</title>

    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src=""></script>
    <script src=""></script>
    <script src=""></script>
    <script src=""></script>
<script src=""></script>
<link href="" type="text/css" rel="stylesheet" />
    <link rel="stylesheet" href="./index.css">

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

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


Require answer for all rows (default is false).

var q = survey.getQuestionByName('questionname'); 
q.isAllRowRequired = yourValue;