Stimuli counter turns to NaN when online

Online experiments
1

Hi, I created an offline experiment with a counter that shows the number of the presented stimulus and the stimili left (like 12/96). It works fine offline, but when I push it online, the “NaN” is written where the counter was. What could be the reason for that? That’s my code:

Begin Experiment
counter = 1
total = 96

End Routine
counter+=1

In the Text Component
$"%d/%d" % (counter, total)
2

Hi @vanessa22, string formatting differs between Python and JavaScript, so the code above does not work online, and is why you are getting a NaN value. Try one of the following JS solutions:

newString = "" + counter + "/" + total // Just concatenate the numbers and strings
newString = `${counter} / ${total}` // Use string templates - note backticks are used, not single or double quotes
3

Hi @dvbridges , it worked - thanks! But, now the counter starts first to be displayed in the second trial. Any idea for that? That didn’t happen offline.

4

Do you mean, the counter is only presented after the first trial? Is your text component set to update after each repeat?

5

Yes, it appears only after the first trial. The text component is set to “set every repeat”.

6

Ok, not really sure what is happening without seeing the task, but you could manually set the text component in the Begin Routine tab:

texctCompName.text = `${counter} / ${total}`;
7

Unfortunately no changes with this