Running Psychopy in Pavlovia: issue with translating Python to Javascript

Online experiments
1

URL of experiment:

Description of the problem:

I created an experiment in Psychopy builder. Because of limitations in the builder I had to create a small piece of custom code. This works as it should when running the code in Psychopy builder. If I run the study online with Pavlovia everything runs fine except from the piece of custom code. Apparently this piece of code in Python should be translated to Javascript. I don’t have any profound knowledge of either of the two languages.

This is the piece of code in Python (which works):

if len(avoidance.keys) != 0:
    USready = False;

if trialClock.getTime() > 19:
    UStimeCheck = True;

if (USready == True and UStimeCheck == True):
    showUS = True;

if (USready == False and UStimeCheck == True):
    continueRoutine = False;

This is the translation of the code above I tried in Javascript (this doesn’t work):

if (avoidance.keys != null) {
    USready = false;
    }

if (trialClock.getTime() > 19) {
    UStimeCheck = true;
    }

if (USready == true && UStimeCheck == true) {
    showUS = true;
    }

if (USready == false && UStimeCheck == true) {
    continueRoutine = false;
    }

I defined the variables USready, UStimeCheck and showUS:

var showUS = false;
var USready = true;
var UStimeCheck = false;

I also tried to set USready on false and true, but this did not make any difference. Any ideas of what might be wrong with the code in Javascript?

Thanks! Sara

2

Hi @Sara_Scheveneels, the translation looks mostly ok. Try the following:

showUS = false;
USready = true;
UStimeCheck = false;

if (avoidance.keys !== undefined) {
    USready = false;
    }

if (trialClock.getTime() > 19) {
    UStimeCheck = true;
    }

if (USready === true && UStimeCheck === true) {
    showUS = true;
    }

if (USready === false && UStimeCheck === true) {
    continueRoutine = false;
    }

If this does not work, please can you share any errors you receive?

3

Thanks @dvbridges, it works now!

Best,
Sara