output of jsPsych.data.getLastTrialData()

[SSchwoebel]

Hello,

I'm using the function jsPsych.data.getLastTrialData() as
var mydata = jsPsych.data.getLastTrialData()
to get the key press from the last trial, in order to use it in the conditional function of the next. I was using an older version of jsPsych until recently. I updated it now, but since then this doesn't work anymore. mydata seems to be an object now, which doesn't have any sensible attributes (I used to check if data.key_press had a certain value). Here the output from the debugging console:

mydata
Object { push: DataCollection/data_collection.push(), join: DataCollection/data_collection.join(), top: DataCollection/data_collection.top(), first: DataCollection/data_collection.first(), last: DataCollection/data_collection.last(), values: DataCollection/data_collection.values(), count: DataCollection/data_collection.count(), readOnly: DataCollection/data_collection.readOnly(), addToAll: DataCollection/data_collection.addToAll(), addToLast: DataCollection/data_collection.addToLast(), 8 more… }

In order to exclude my code as the reason, I tried this out in the example jspsych-animation.html with adding the above line; this leads to the same error.

I'm not sure how to solve this. I'm aware that I could check for this at the end of the previous trial, but then I would have to rewrite large parts of my code.

Thanks!

Sarah Schwoebel

[jodeleeuw]

The data module has been overhauled for version 6. To check if key_press has a particular value, you can use this command:

jsPsych.data.getLastTrialData().values()[0].key_press

Or, equivalently

jsPsych.data.get().last(1).values()[0].key_press

There is some documentation in the /docs/markdown_docs/features_data.md file in the repo. Until version 6 is officially released, the docs on the website will still be for version 5.

[SSchwoebel]

Thank you very much! This works. This issue can be closed