TypeError: Number.IsInteger is not a function

Online experiments
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1

URL of experiment: WTK_Newstories [PsychoPy]

Description of the problem:

This error (TypeError: Number.IsInteger is not a function) comes up I can’t work out the cause of it. It begins at the first point after instructions, trying to draw basic text to a screen. It does not matter if the text comes from an input file or if I just type it in the box. It works fine in PsychoPy, using the automatic translation to JS. I have been trying to troubleshoot for a few hours now, and I am still stumped. The developer view in the browser does not offer a clue as to where the error is happening, but it does suggest it is trying some conversion to numeric. Any help would be most appreciated.

  1. context: “when converting an object to its numerical form”
  2. error: TypeError: Number.parseFloat is not a function at convertToNumber

etc…

2

Might the error occur as you enter a loop? If so, what is the value of nReps?

3

Yes, it only happens when the trial is happening with a loop. It takes an input file with 7 variables. nReps is 1. The Conditions file has 120 conditions across 7 columns, so in Psychopy is just runs through those as 120 trials. Perhaps there is another way to make it work with JS?

4

I’ve just looked at the developer view and the error appears to be in this line

   this.buttons = Number.isInteger(buttons) ? buttons : 'which' in event && event.which;

Do you have button components or buttons defined in code?

5

Button components. Allowed keys are “right” and “left”, set as constant. Everything else is left as default. I will have a quick try with different button responses… hmm no dice. I have been adjusting the code a bit this morning. Currently, the error in developer view comes up at this point, but that changes if make the text not a variable:

newstory_text.setText(story_text);

6

Ah! One of the variables in the loop condition file was called “Number”. I changed that and it was fixed. Thanks so much for your time. The clue was in the ‘loop’ dependency :smile:

7

Ah yes. Number is already on my crib sheet as a variable name to avoid.