Repeating a loop x times

liranpeleg5

Hey all,

I'm using JavaScript for the current exp, and I have defined a variable called "block_size".

When I'm creating a Loop item I want to set the repeats to be "block_size" times.

I've tried the following but with no success:

set repeat "[block_size]"

Am I missing something? Is it supposed to be different while using JS instead of Python?

Thank you!

lvanderlinden

Hi @liranpeleg5 ,

This is indeed a bug in OSWeb. I reported the issue:

• https://github.com/open-cogsci/osweb/issues/43#issue-743276642

Until the issue is fixed, just let us know if you need help thinking of a temporary workaround by indicating the exact behavior that you want to implement.

Cheers,

Lotje

liranpeleg5

Thank you for the fast reply!

I would indeed like to get a workaround.

Basically what I need to do is to generate a random block_size with value between 2 and 7.

Then, on a later step in the experiment, I need to define a loop to run block_size times.

I don't mind defining block_size in a different component if it would work (it's only used in the said Loop item).

Any ideas? :)

lvanderlinden

Hi @liranpeleg5 ,

I think something like the following should work:

• Define the variable "block_count" somewhere in your experiment (for example in the experimental-loop item
• Prepare 6 different block-loop items with similar content (you could use linked copies for copying the content) and call them something like "block_loop_repeat2", "block_loop_repeat3" etc.
• Define the respective repeat values as absolute values rather than variables in the corresponding loop items
• Use Run-if statements (for example in the block-sequence) to determine which block should be run. You could use the following code in the Run-if boxes:

[block_count] = 2
[block_count] = 3
[block_count] = 4

etc.

I uploaded a working example. Hope this helps!

Cheers,

Lotje

6652.osexp