question about virtual chinrest

[hope525]

Hi all,

I am very new to Jspsych and Javascript(just started coding last week). I want to use use the value(eg. px2mm) returned by the virtual chinrest plugin. How can I get the number? I used "var all_data =jsPsych.data.get()" and get an object. In the console, it returns the following. I used all_data.trials[0].px2mm. in the code and it shows "undefined". However, all_data.trials[0].px2mm does shows the right number in the console. How can I correctly get the number returned by the plugin? Thanks

m {trials: Array(0)}
trials: Array(2)
0:
internal_node_id: "0.0-0.0"
item_height_mm: 53.98
item_width_deg: 19.96460930454781
item_width_mm: 85.6
item_width_px: 428.082191780822
px2deg: 21.442052045732122
px2mm: 5
rt: 4442
scale_factor: 0.584
time_elapsed: 4443
trial_index: 0
trial_type: "virtual-chinrest"
view_dist_mm: 243.17
win_height_deg: 36.843488594984706
win_width_deg: 34.88472084689691
[[Prototype]]: Object
1: {rt: 855, stimulus: '\n

If the measurements were done correctly, t…0px; height: 500px; margin: 20px auto;">\n ', response: 0, trial_type: 'html-button-response', trial_index: 1, …}
length: 2

[hope525]

The issue has been solved.