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I'm a university student and I'm working with JsPsych on a Jatos server. Doing an excercise I receive an error about my jspointer. Exactly the error is: Uncaught ReferenceError: jsonpointer is not defined at jatos.batchSession.get (jatos.js:774:13) at start:33:25

I really don't know how to solve it, cause with this kind of error I cannot retrieve my Batch Session's data to make my experiment work. I'll show you also there my code to help you understand (it's just the specific exercise code, cause the hole set of excercises is really more vast and complex):


<!DOCTYPE html>
<html lang="">
  <head>
    <meta charset="utf-8">
    <title> BENVENUTO </title>

    <script src="jatos.js"></script>
    <script src="https://unpkg.com/jspsych@7.2.3"></script>
    <script src="https://unpkg.com/@jspsych/plugin-html-keyboard-response@1.1.1"></script>
    

    <link href="https://unpkg.com/jspsych@7.2.3/css/jspsych.css" rel="stylesheet" type="text/css" />
  </head>
  <body>
    <style>
      body {
        background-color: white;
        }

    </style>
  </body>

  <script>
    
    var jsPsych = initJsPsych ({
        override_safe_mode: true,
        on_finish: function(){
            jatos.startComponentByPos(nextComponentPosition[componentCounter], data, JSON.stringify(data));
        }
    });
    

    if (jatos.batchSession.get("level_attenzione") <= 1){
        var attenzione = jsPsych.randomization.shuffle(jatos.studyInput.attenzione_1).slice(0,3)
    };
    if (jatos.batchSession.get("level_attenzione") == 2){
        var attenzione = jsPsych.randomization.shuffle(jatos.studyInput.attenzione_2).slice(0,3)
    };
    if (jatos.batchSession.get("level_attenzione") > 2){
        var attenzione = jsPsych.randomization.shuffle(jatos.studyInput.attenzione_3).slice(0,3)
    };
    if (jatos.batchSession.get("level_linguaggio") <= 1){
        var linguaggio = jsPsych.randomization.shuffle(jatos.studyInput.linguaggio_1).slice(0,3)
    };
    if (jatos.batchSession.get("level_linguaggio") == 2){
        var linguaggio = jsPsych.randomization.shuffle(jatos.studyInput.linguaggio_2).slice(0,3)
    };
    if (jatos.batchSession.get("level_linguaggio") > 2){
        var linguaggio = jsPsych.randomization.shuffle(jatos.studyInput.linguaggio_3).slice(0,3)
    };
    if (jatos.batchSession.get("level_memoria_verbale") <= 1){
        var memoria_verbale = jsPsych.randomization.shuffle(jatos.studyInput.memoria_verbale_1).slice(0,3)
    };
    if (jatos.batchSession.get("level_memoria_verbale") == 2){
        var memoria_verbale = jsPsych.randomization.shuffle(jatos.studyInput.memoria_verbale_2).slice(0,3)
    };
    if (jatos.batchSession.get("level_memoria_verbale") > 2){
        var memoria_verbale = jsPsych.randomization.shuffle(jatos.studyInput.memoria_verbale_3).slice(0,3)
    };
    if (jatos.batchSession.get("level_memoria_visiva") <= 1){
        var memoria_visiva = jsPsych.randomization.shuffle(jatos.studyInput.memoria_visiva_1).slice(0,3)
    };
    if (jatos.batchSession.get("level_memoria_visiva") == 2){
        var memoria_visiva = jsPsych.randomization.shuffle(jatos.studyInput.memoria_visiva_2).slice(0,3)
    };
    if (jatos.batchSession.get("level_memoria_visiva") > 2){
        var memoria_visiva = jsPsych.randomization.shuffle(jatos.studyInput.memoria_visiva_3).slice(0,3)
    };
    

    var componentCounter = 0;
            
    var nextComponentPosition = attenzione.concat(linguaggio).concat(memoria_verbale).concat(memoria_visiva)
    nextComponentPosition = jsPsych.randomization.shuffle(nextComponentPosition)
    nextComponentPosition.splice(nextComponentPosition.length/2, 0, 2)
    nextComponentPosition = nextComponentPosition.concat(3);

    var data = {
        level_attenzione: BatchSession["level_attenzione"],
        level_linguaggio: BatchSession["level_linguaggio"],
        level_memoria_verbale: BatchSession["level_memoria_verbale"],
        level_memoria_visiva: BatchSession["level_memoria_visiva"],

        level_gradimento: BatchSession["level_gradimento"]
    };

    var empty = [];
    sessionStorage.setItem("nextComponentPosition", nextComponentPosition);
    sessionStorage.setItem("componentCounter", componentCounter);
    sessionStorage.setItem('attenzione', empty);
    sessionStorage.setItem('linguaggio', empty);
    sessionStorage.setItem('memoria_verbale', empty);
    sessionStorage.setItem('memoria_visiva', empty);

    var instructions = {
        type: jsPsychHtmlKeyboardResponse,
        stimulus: '<h2 style="text-align-center"> Prema il tasto INVIO per proseguire </h2>',
        choices: ['Enter'],
    };

    var timeline = [instructions];

  jsPsych.run(timeline);
  </script>
</html>

I've tryed to access to the JSONfile to understand where is the error about the missing jsonpointer, but what I obtained is just:

 * Getter for a field in the batch session data. Takes a name
     * and returns the matching value. Works only on the first
     * level of the object tree. For all other levels use
     * jatos.batchSession.find. Gets the object from the
     * locally stored copy of the session and does not call
     * the server.
     * @param {string} name - name of the field 
     * @return {object}
     */
    jatos.batchSession.get = function (name) {
        var obj = jsonpointer.get(batchSessionData, "/" + name);
        return cloneJsonObj(obj);
    };
alessandro bettin
  • 1
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0 Answers0