survey-text content validation + timeline_variables + randomized_order:true #1567

CristinaMendonca · 2021-02-24T20:08:50Z

CristinaMendonca
Feb 24, 2021

Hello!,

I would like to do some minimal survey-text validation (just see if the participant has inputted anything at all in the text-box). I tried adapting this other solution, but couldn't get it to work so far: it will display a first random item, but will then display no content (the progress bar is updated, so the trial is terminating successfully). I'm guessing it is some interference from other features I've added (timeline_variables or randomized_order:true), so here's the code with all the main features:

Thanks a lot in advance!,
Cristina

<!DOCTYPE html>
<html>
    <head>
        <title>Survey</title>
        <script src="jspsych-6.3.0/jspsych.js"></script>
        <script src="jspsych-6.3.0/plugins/jspsych-html-button-response.js"></script>
        <script src="jspsych-6.3.0/plugins/jspsych-survey-text.js"></script>
        <link href="jspsych-6.3.0/css/jspsych.css" rel="stylesheet" type="text/css">
    </head>
    <body></body>
    <script>

    var timeline = [];

    var n_trials = 10;

    var repeat_loop = false;

    var repeat_message = {
        type: 'html-button-response',
        stimulus: 'INVALID TEXT ERROR MESSAGE!',
        choices: ['Continue']
    };

    var repeat_message_conditional = {
        timeline: [repeat_message],
        conditional_function: function() {
            var response = JSON.parse(jsPsych.data.getLastTrialData().values()[0].responses).Q0;
            if (isNaN(response_num) | response.length > 0) {
                repeat_loop = true;
                return true;
            } else {
                repeat_loop = false;
                return false;
            }
        }
    }

    var crt_st = [{prompt: "Item 1"}, {prompt: "Item 2"}, {prompt: "Item 3"}, {prompt: "Item 4"}, {prompt: "Item 5"},
                {prompt: "Item 6"}, {prompt: "Item 7"}, {prompt: "Item 8"}, {prompt: "Item 9"}, {prompt: "Item 10"}]

    var crt = {
        type: 'survey-text',
        questions: [{prompt:jsPsych.timelineVariable("prompt")}],
        on_finish: function() {
            var curr_progress_bar_value = jsPsych.getProgressBarCompleted();
            jsPsych.setProgressBar(curr_progress_bar_value + (1/n_trials));
    }
    };

    var crt_procedure = {
        timeline: [crt, repeat_message_conditional],
        timeline_variables: crt_st,
        randomize_order: true,
        loop_function: function() {
            return repeat_loop;
        }
    };
    timeline.push(crt_procedure);
    
    jsPsych.init({
        timeline,
        show_progress_bar: true,
        auto_update_progress_bar: false,
        on_finish: function() {
            jsPsych.data.displayData();
        }
    })
    </script>
</html>

jodeleeuw · 2021-02-26T18:56:41Z

jodeleeuw
Feb 26, 2021
Maintainer

Hi @CristinaMendonca

I think that the issue is that we changed how we are storing hierarchical data in jsPsych 6.3.0.

var response = JSON.parse(jsPsych.data.getLastTrialData().values()[0].responses).Q0;

On the above line, you no longer need to JSON.parse(...) the .responses variable. And .responses has been simplified to .response as part of an effort to standardize variable names in the data.

Try this as a replacement.

var response = jsPsych.data.getLastTrialData().values()[0].response.Q0;

1 reply

CristinaMendonca Feb 26, 2021
Author

I wondered if I could replicate the original example of the number between 0 and 100, and it didn't work with JSON.parse, but then worked with jsPsych, but didn't fix my code. Still, when going back to the between 0 and 100 example I realized my needs were satisfied by just adding a required:true to the questions item.

Sorry for the silly question and thank you for your time!

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