"Hide" a checkbox in a grid question - Part 2

Question

This is a follow up to a question I asked a couple days ago...

https://www.sawtoothsoftware.com/forum/1178/hide-a-checkbox-in-a-grid-question

Suppose I have this grid question - column based with checkboxes. (The "O"'s in my example are graphical checkboxes)

Q1
             A  B
Row 1  O  O
Row 2  O  O
Row 3  O  O

Now I have another gird question with the same format but I only want to display the checkboxes that were checked in the previous question.  In other words, if a respondent answers like this...

Q1
            A  B
Row 1  X  O
Row 2  X  O
Row 3  O  X

I want the next question to display this...

Q2
            A  B
Row 1  O
Row 2  O
Row 3       O

I can hide a checkbox in Q2 with the following code:

<script>
document.getElementById("Q2_r1_c1_graphical").visibility = 'hidden';
document.getElementById("Q2_r1_c1_graphical").disabled = 'true';
document.getElementById("Q2_r1_c1_graphical").className = 'HideElement';
</script>

But I can't figure out how to format the "if" part around it to base it on Q1.  Something like this...

<script>
if([%Q1_r1_c1%] <> 1)
{
document.getElementById("Q2_r1_c1_graphical").visibility = 'hidden';
document.getElementById("Q2_r1_c1_graphical").disabled = 'true';
document.getElementById("Q2_r1_c1_graphical").className = 'HideElement';
}
if([%Q1_r1_c2%] <> 1)
{
document.getElementById("Q2_r1_c2_graphical").visibility = 'hidden';
document.getElementById("Q2_r1_c2_graphical").disabled = 'true';
document.getElementById("Q2_r1_c2_graphical").className = 'HideElement';
}
//etc.

...except that doesn't work.  The checkbox always displays no matter how I answer Q1.  I've tried it a hundred different ways but can't seems to get the syntax right - or maybe I'm missing something else.

Answer 1

instead of if([%Q1_r1_c1%] <> 1)
I believe you need to use if (SSI_GetValue ("Q1_r1_c1") <> 1)

The [%%] is used to just show the response, not actually pull the value of it up.

Comments

actually no, as far as I remember the SSI_GetValue is to get answers from the current page, which haven't been written to the database, wheres the [%%] notation queries the database for earlier answers.

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Thanks Jay, but that's one of the things I tried and no luck.  It seems I've tried every Combination of SSI_GetValue, VALUE, etc. and no matter what I do, the checkboxes always show.  The only way I can get them to not show is unconditionally.

---

Ah yes, my mistake.

Answer 2

if Q1 is a column based grid, its items will be named
Q1_c1_r1 instead of Q1_r1_c1 (notice the r vs c order)

if this is not the reason, then try

if([%Q1_r1_c1%] <> "1")

instead of

if([%Q1_r1_c1%] <> 1)

and let us know whether or not it worked

Comments

Thanks Bahadir but I've tried your suggestions and no luck.  Q1 is a column based grid however when I export the data the variables names are "Q1_r1_c1" rather than "Q1_c1_r1".  When I use "Q1_c1_r1" in the code I get a 'symbol does not exist' error.

Putting quotes around the 1 did not do the trick either.

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hmm, what do you get when you insert

alert([%Q1_r1_c1%]);

before the ifs?

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**HAPPY**  I've stumbled upon the solution.  Using

if([%Q1_r1_c1%] <> 1)

did not work.  In fact the alert statement (which I put before the 'if') did not even fire making me think that the whole script crashed.

However, using

if ([%Q1_r1_c1%] == 0)

did work!  Although I don't know why this way works and the other way doesn't.

Not to complicate this any more, but the rows in Q2 display conditionally based on whether there is a check under either column for that row in Q1.  My thinking in using "<> 1" is that it would handle cases where a row does not diaplay and the internal value would be "".  However it appears that the internal value is "0" even if the row doesn't display so the "==0" logic always works.

Thank you both for your help!!!

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ah not equal operator is != in js :)