Getting different lists from a file that contains all stimuli

[inesmar7]

Hi there!

I am looking for a way to define the lists automatically by some kind of function. For my stimuli, I have a js file that contains all the stimuli for all the lists (called stimuli_all.js), and the entries look something like this (there are 8 lists in total):

{ 
list: "1", 
set: "coffee", 
condition: "C", 
img: "coffee_s1.jpg" 
}, 
{ 
list: "2", 
set: "coffee", 
condition: "A", 
img: "coffee_s2.jpg" 
},

I would like to write code that says something like "if list ==1, add this stimulus to stimuli_list_1" etc, instead of manually creating 8 different files from my full file.

So far, I have tried to do it like this:

// assign subject randomly to 1 out of 8 lists
var list_assignment = jsPsych.randomization.sampleWithoutReplacement([1,2,3,4,5,6,7,8], 1)[0];

// add list information to data
jsPsych.data.addProperties({
        condition: list_assignment
    });

// assign only those stimuli to the list that correspond to the assigned list
var stimuli_list = stimuli_all.filter(x => x.list == list_assignment)

At first glance it seems to work, but as I'm new to programming and have never taken a course, I'm not sure if there aren't some hidden pitfalls and there might be a better solution.

Thanks a lot in advance for any help!

[ChristopheBossens]

I don't see anything wrong with this approach. What I would do personally is organize the js file so that the different lists are in there explicitly: you define a key for the list number and for each list number you define the array of stimuli that corresponds to it. But I guess that's just an alternative way of doing things :)

{"1" : [
   {set: "coffee", condition: "C", img: "coffee_s1.jpg"},
   {set: "coffee", condition: "C", img: "coffee_s1.jpg"}],
 "2" : [
   {set: "coffee", condition: "A", img: "coffee_s2.jpg"},
   {set: "coffee", condition: "A", img: "coffee_s2.jpg"}]
}

[inesmar7]

Thanks a lot! :)