Javascript display logic for matrix table: hide row conditional on answer being piped in

Qualtrics.SurveyEngine.addOnload(function()
{
/*Place your JavaScript here to run when the page loads*/
if ('${q://QID88~93/ChoiceGroup/SelectedChoices}'= ‘I don't know’)
{jQuery(("#QR~"+this.questionId+"~"+cell).replace(/~/g, "\\~")).closest("tr").hide();}
jQuery(".choiceText").hide();
});

Error: "Invalid left-hand side in assignment." Any ideas on what I'm doing wrong? Am I missing a period or a parenthesis somewhere?

Also, I need the choiceText part to address something else from another question. (The choices being piped in to this question need parts of them hidden: MexicoMexican ("choiceText""pipedText") is piped in, for example, and I need to hide the choiceText (Mexico) and display only the pipedText (Mexican).

Hm. The same error is still appearing after I removed both of those parentheses. Is this because I haven't assigned a value to "cell"? What value should I be assigning to "cell"?

I'll try to give more info below.

Question 1: "What country were you born in?" (Multiple Choice, Single Response)

Choice 1:
`<span class="choiceText">Afghanistan< /span>< span class="pipeText">Afghan</span>` (appears as AfghanistanAfghan)
All the way to `<span class="choiceText">Zimbabwe</span><span class="pipeText">Zimbabwean</span>` (appears as ZimbabweZimbabwean)

Javascript on Question 1:
```
Qualtrics.SurveyEngine.addOnload(function()
{

jQuery(".pipeText").hide();
});
```
Questions 2-6: "What country was your mother/father/maternal grandmother/maternal grandfather/paternal grandmother/paternal grandfather born in?" (Same question type, choices, and Javascript as Question 1, with the exception of "I don't know" as an added choice)

Choice 1: "I don't know"
Choice 2: `<span class="choiceText">Afghanistan</span><span class="pipeText">Afghan</span>`
All the way to `<span class="choiceText">Zimbabwe</span><span class="pipeText">Zimbabwean</span>`

Javascript on Questions 2-6:
```
Qualtrics.SurveyEngine.addOnload(function()
{
jQuery(".pipeText").hide();
});
```

Question 7: "Please use the scale below to indicate how much you agree with the following. Overall, I am..." (Matrix Table: 5-point Likert)

Choice 1: piped in as selected choice from Question 1
All the way to: piped in as selected choice from Question 6

Display logic for the choices piped in from Questions 2-6: Only display if selected choice from Questions 2-6 was not "I don't know."

Javascript on Question 7 (this time hiding choiceText instead of pipeText):
```
Qualtrics.SurveyEngine.addOnload(function()
{
jQuery(".choiceText").hide();
});
```
What's wrong: when the answer is "I don't know" for Questions 2-6, although the words "I don't know" are not displayed in Question 7, the blank row with all 5 Likert radio buttons is still there. This is why I thought the following code would work:

```
Qualtrics.SurveyEngine.addOnload(function()
{
if ('${q://QID88~93/ChoiceGroup/SelectedChoices}'= ‘I don't know’)
{jQuery("#QR~"+this.questionId+"~"+cell).replace(/~/g, "\\~").closest("tr").hide();}
jQuery(".choiceText").hide();
});
```

But I'm getting: Error: "Invalid left-hand side in assignment."

Oh, I'm sorry: I misspoke. I do have "IS NOT SELECTED." The red circled area is where I chose "I don't know" on one of those previous questions and while the words "I don't know" are not displayed, as you can see, the row still is. See below

!

!

TomG, you're amazing. Worked like a charm. Thank you very, very much.

To do it without JS, you would include a row for all countries in your matrix, then add display logic to each one to display if it was picked in any of the 9 MC questions.

There are a number of different ways you could do it with JS. My preference would be to do it before you get to the Matrix. Remove the duplicates from the list of selected countries, then set 9 embedded variables so that each one is a unique country from the list or blank. Then pipe those variables in as the row labels of the matrix.

> @ResearchPsychologist said:
> Hi, Tom. I wrote the script but it's not working, so it might be incorrect. Either that, or I may misunderstand what you're recommending? As you'll see in the final image, nothing is showing up.
>
> !
>
Your arguments on setEmbeddedData are backwards. The name of the embedded variable is the first argument, and the value is the second argument.

I assume you realize that there is nothing in the code to remove the duplicates. You probably want to name your embedded variables country1, country2, etc. because you will want to populate them in a loop after you de-dup.

I've spent so many days on this. For the life of me, I cannot figure it out! I tried out my code https://jsconsole.com/ with ["a","b","b","c","d","d"] and console.log instead of Qualtrics.SurveyEngine.setEmbeddedData and it works: I constructed the array, de-duped it with Set, and then put it in a loop that sets the embedded data. I also set the embedded data in the survey flow. But I'm still ending up with nothing in the preview. The green block of embedded data in the survey flow is set before the whole block of questions involving embedded data and the question I'm referencing comes in the middle of the question block. Does that matter? Pretty please, I could use some help!

!

!

!

!

UPDATE: I'm certain now that it's something to do with how I set the embedded data and that I've isolated where the problem is occurring, though I still can't solve it. When I take out ALL JavaScript and just use survey flow to create embedded data with the response choices from the prior questions (e.g., country1 = ${q://QID93/ChoiceGroup/SelectedChoices}, etc.) and then pipe in the embedded data into the new question's response choices (e.g., answer choice 1 = ${e://Field/country1}, it's not showing anything in preview for any of the response choices (as shown in the final image above). However, if I create a question where I'm just directly piping in the response choices from the prior questions (e.g., ${q://QID93/ChoiceGroup/SelectedChoices}, instead of piping in embedded data and setting the embedded data, e.g., ${e://Field/country1}, as the response choices from the prior questions), it works. However, I cannot do the question this way as I am unable to de-dupe the piped in response choices. (So instead, as TomG advised, I have to construct an array, de-dupe, and set the embedded data from a loop and pipe it back in. Or is there another way?)