Pavlovia Sync Suddenly Deletes Core PsychoJS Variables

[nadavWeisler]

Hi everyone,

I’ve been developing an experiment for a while, and suddenly I encountered a strange issue. When I sync my project with Pavlovia, it starts deleting the creation of core PsychoJS variables from the JS code.

Even if I manually add them back, the next sync removes them again.
Here’s a screenshot comparing the commits to show what’s happening:

Has anyone encountered this before? Any idea why this might be happening or how to prevent it?

Thanks in advance for your help!n.

[wakecarter]

@nadavWeisler

it starts deleting the creation of core PsychoJS variables from the JS code.

What error do you get if you don’t edit the JS code?

Wakefield's Daily Tips

The answer is (almost) never to edit the generated code When you create an experiment in Builder, PsychoPy then generates a Python file which you can use to run the experiment locally and two JavaScript files suitable for running the experiment online (using current and older browsers). If something doesn’t work, there may be a temptation to make edits directly to the Python/JavaScript files rather than the Builder file. However, this is generally a bad idea for two reasons: The process is o…

[nadavWeisler]

I got the error:

[wakecarter]

What version of PsychoPy are you using?

[nadavWeisler]

2024.2.4

[wakecarter]

Thanks.

Is your “use version” in Experiment Settings blank? Do you have any loops? Do you have any code referring to currentLoop?

[nadavWeisler]

The use version is not blank, but contains 2024.2.0, I got multiple loops in the experiments but no code referring to currentLoop

[wakecarter]

Try making it blank.

[nadavWeisler]

Done, nothing changed

[wakecarter]

Did you check an incognito tab?

[nadavWeisler]

Yes

[wakecarter]

Okay. Please could you add me (Wake) as a developer and I’ll take a look.

[wakecarter]

However, first please set it to inactive and then piloting/running again.

[nadavWeisler]

@wakecarter

Wake

Hey I added you, thanks

[wakecarter]

Hi.

I’ve taken a look and I’m pretty sure that the issue is that you are writing JavaScript code that isn’t compatible with PsychoJS. You have disabled your text components and replaced them with JS only code components. You implied that previous versions of the experiment worked fine. On what date did this experiment last run and what did you add next?

Begin Routine

let introDiv = document.getElementById("introTextDiv");
introDiv.innerHTML = introText;
introDiv.style.display = "block";

End Routine

// Hide intro text at end of trial
let introDiv = document.getElementById("introTextDiv");
if (introDiv) {
    introDiv.style.display = "none";
}

Here are some threads with the same issue:

Variables not declared in auto JS generation

URL of experiment: AudFlankTest_legacy [PsychoPy] Description of the problem: Hello all! I seem to keep receiving ReferenceErrors when attempting to run this experiment online. The variables never seem to be declared in the auto-generated JS file, which I seem to recall has been the case previously. For example, in the below snippet, currentLoop is never defined anywhere using var/let/etc. async function updateInfo() { currentLoop = psychoJS.experiment; // right now there are no loops ..…

frameDur is not defined error

URL of experiment: https://run.pavlovia.org/learningdevlab/3b_complex_binctl/html Description of the problem: When I click to pilot my experiment, I get through the dialog box, but then immediately get a frameDur error when I check the javascript console, my error is related to code that was generated automatically by psychopy/pavlovia [Screen Shot 2020-03-11 at 12.21.56 PM] // store frame rate of monitor if we can measure it successfully expInfo['frameRate'] = psychoJS.window.getActualFr…

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Wakefield's Daily Tips

Builder isn’t Coder I strongly discourage the use of PsychoPy Coder for the creation of psychology experiments because Builder is easier to debug, share with others and translate into PsychoJS for use online. If you already have an experiment written in Coder, pasting the code into Builder code components is not sufficient to turn it into a Builder experiment. The logic of how to arrange an experiment is slightly different because of the way Builder works with components, routines and loops. F…

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[nadavWeisler]

Thanks! found the problem:

This row isn’t compatible with PsychoJS:

slider_value = document.querySelector('input[name="expectation"]:checked')?.value;

Instead, I changed it to:

let selectedInput = document.querySelector('input[name="expectation"]:checked');
let slider_value = selectedInput ? selectedInput.value : null;