Slider - response need to be made before proceeding

Online experiments
1

Hi there,

In my experiment, I’m using slider to record responses and participants can go to the next trial by pressing the space bar. I used some code suggested in other posts to prevent participants from skipping responses. The code worked locally but failed online. I was able to use slider to make responses but I couldn’t go to the next trial by pressing the space bar.

The Python code:
if slider.getRating() != None:
if ‘space’ in key_resp_3.getKeys():
continueRoutine=False

The Javascript:
var _pj;
function _pj_snippets(container) {
function in_es6(left, right) {
if (((right instanceof Array) || ((typeof right) === “string”))) {
return (right.indexOf(left) > (- 1));
} else {
if (((right instanceof Map) || (right instanceof Set) || (right instanceof WeakMap) || (right instanceof WeakSet))) {
return right.has(left);
} else {
return (left in right);
}
}
}
container[“in_es6”] = in_es6;
return container;
}
_pj = {};
_pj_snippets(_pj);
if ((slider.getRating() !== undefined)) {
if (_pj.in_es6(“space”, key_resp_3.getKeys())) {
continueRoutine = false;
}
}

I also added “keys=psychoJS.eventManager.getKeys()” in the Javascript at the beginning of the experiment.

The error seems to be something to do with the “undefined” in Javascript. When I checked the developer tool, there was a series of warning.

Screen Shot 2023-06-09 at 11.32.06 am
Screen Shot 2023-06-09 at 11.32.06 am1094×858 171 KB

Does anyone know how to fix this?

Thanks!

2

I also tried these code suggested by another post I found, but didn’t work online.

Python code:
if slider.getRating():
if ‘space’ in key_resp_3.getKeys():
continueRoutine=False

JS:
event=psychoJS.eventManager;
var _pj;
function _pj_snippets(container) {
function in_es6(left, right) {
if (((right instanceof Array) || ((typeof right) === “string”))) {
return (right.indexOf(left) > (- 1));
} else {
if (((right instanceof Map) || (right instanceof Set) || (right instanceof WeakMap) || (right instanceof WeakSet))) {
return right.has(left);
} else {
return (left in right);
}
}
}
container[“in_es6”] = in_es6;
return container;
}
_pj = {};
_pj_snippets(_pj);
if (slider.getRating()) {
if (_pj.in_es6(“space”, key_resp_3.getKeys())) {
continueRoutine = false;
}
}

3

Hi, you can try setting the Start field of your keyboard component to condition > slider.rating (see image attached). This should mean that the keyboard would only start collecting responses when a rating has been made.

Screenshot 2023-06-15 134020
Screenshot 2023-06-15 1340201520×713 25.1 KB

4

Thank you so much! It works