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Referencing questions and subquestions in JavaScript

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8 years 10 months ago #130402 by ervit
Referencing questions and subquestions in JavaScript was created by ervit
Hi

I use a fair amount of javascript workarounds to manipulate my survey, but without a solid footing in JavaScript and jQuery, I often struggle with some things. There doesn't seem to be a general manual on how to reference LS questions and subquestions in JavaScript.

From some examples I know that {QID} in JS gives the question ID of the current question, but how can I reference subquestions without having to resort to the SGQA-like selectors?

For example, I currently do this to set an input mask for a subquestion in a text array:
Code:
// Set the input masks
 $('tr.subquestion-list[id="javatbd376637X9X{QID}SQ002"] input[type="text"]', thisQuestion).inputmask('financial');

However, if I copy the survey or move the question to another group, this code will become useless.

I'm sure there are some tricks to reference subquestions and questions without the SGQA structure, but how? At the very least I could use some code that generates this part dynamically (SGQ) so that I can be certain I don't have to rewrite the code each time I copy the survey or the question.
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8 years 10 months ago - 8 years 10 months ago #130403 by Ben_V
Replied by Ben_V on topic Referencing questions and subquestions in JavaScript
Code:
// Set the input masks
 $('tr.subquestion-list[id="javatbd{SGQ}SQ002"] input[type="text"]', thisQuestion).inputmask('financial');

www.limesurvey.org/manual/Expression_Man...#Access_to_Variables
Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)
Last edit: 8 years 10 months ago by Ben_V.
The following user(s) said Thank You: ervit
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8 years 10 months ago #130405 by ervit
Replied by ervit on topic Referencing questions and subquestions in JavaScript
Thanks!

Is there a quick way to do the same for another question? E.g. by providing its QID?
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8 years 10 months ago #130406 by Ben_V
Replied by Ben_V on topic Referencing questions and subquestions in JavaScript
There is nothing to adapt... those are dedicated keywords affecting only the question where they are pasted (either text or help area)...
This said, the possibility to mix EM {keywords} and javascript code is very limited and plain js is still required in a lot of cases
Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)
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8 years 10 months ago #130408 by ervit
Replied by ervit on topic Referencing questions and subquestions in JavaScript
I see...

Is it possible to create some sort of JS function that takes a question ID as an argument and returns that question's SGA code? (I'm sure someone must have done it before)
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8 years 10 months ago #130418 by Ben_V
Replied by Ben_V on topic Referencing questions and subquestions in JavaScript
I think it's not possible but you can manage question codes or answer text for this...
For example, you can use the following syntax to set some js based on a response to a previous radio button question:
q code: "Qgender"
2 answer options:
=> "code" (text)
a) "GIRL" (Marie-Sophie)
b) "BOY" (Jean-Pierre)
Code:
// using answer code
      var gender = '{Qgender.NAOK}';
     if (gender == 'GIRL') { // do something }  
    if (gender == 'BOY') { // do something }
Code:
// using answer option text
      var gender = '{Qgender.shown}';
     if (gender == 'Marie-Sophie') { // do something }  
    if (gender == 'Jean-Pierre') { // do something }
Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)
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  • DenisChenu
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8 years 10 months ago #130444 by DenisChenu
Replied by DenisChenu on topic Referencing questions and subquestions in JavaScript

ervit wrote: I see...

Is it possible to create some sort of JS function that takes a question ID as an argument and returns that question's SGA code? (I'm sure someone must have done it before)

No,

But
- {QID} is replaced by question id (before put in HTML) then you can use $("#question{QID}").hide() (for example)
- {SGQ} is replaced by the SGQ of the answer part. answer{SGQ} for single question answer{SGQ}SQ001 for multiple question.

If you use it in another question :
{QCODE.qid} : replaced by the question id of the question with title QCODE
{QCODE.sgq} : same with SGQ

www.limesurvey.org/manual/Expression_Man...#Access_to_Variables

Denis
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
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The following user(s) said Thank You: Ben_V
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8 years 10 months ago #130448 by Ben_V
Replied by Ben_V on topic Referencing questions and subquestions in JavaScript

DenisChenu wrote: If you use it in another question :
{QCODE.qid} : replaced by the question id of the question with title QCODE
{QCODE.sgq} : same with SGQ


I never use/remember this possibility, but sounds usefull :)
Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)
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8 years 10 months ago #130449 by ervit
Replied by ervit on topic Referencing questions and subquestions in JavaScript
So, for example when I have this code for 'this' question:
Code:
// Identify this question
var thisQuestion = $('#question{QID}');

can I have the following in the same code procedure for another question (that question's code is 'P1UnitSales'):
Code:
// Identify that question
var thatQuestion = $('#question{P1UnitSales.qid}');

I'm getting errors at the above thatQuestion variable assignment
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  • tpartner
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8 years 10 months ago - 8 years 10 months ago #130468 by tpartner
Replied by tpartner on topic Referencing questions and subquestions in JavaScript
Try:

Code:
// Identify that question
var thatQuestion = $('#question{that.P1UnitSales.qid}');
Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
Last edit: 8 years 10 months ago by tpartner.
The following user(s) said Thank You: DenisChenu, Ben_V, ervit
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8 years 10 months ago #130594 by ervit
Replied by ervit on topic Referencing questions and subquestions in JavaScript

Ben_V wrote: I think it's not possible but you can manage question codes or answer text for this...
For example, you can use the following syntax to set some js based on a response to a previous radio button question:
q code: "Qgender"
2 answer options:
=> "code" (text)
a) "GIRL" (Marie-Sophie)
b) "BOY" (Jean-Pierre)

Code:
// using answer code
      var gender = '{Qgender.NAOK}';
     if (gender == 'GIRL') { // do something }  
    if (gender == 'BOY') { // do something }
Code:
// using answer option text
      var gender = '{Qgender.shown}';
     if (gender == 'Marie-Sophie') { // do something }  
    if (gender == 'Jean-Pierre') { // do something }


I tried this approach on a multiple choice question, but the variable always turns out with some span code. In other words, this:
Code:
 var ceoDir = "{MgmtPositions_SQ001.NAOK}";
...comes back as this:
Code:
"<span id='LEMtailor_Q_54_128'>Y</span>"
I need it to return just the "Y". What am I doing wrong here? I have tried .value, .code, .shown etc. - all come back with the <span> html tag.

I have found the
Code:
$("<html>actual text</html>").text();
function which helps to strip the HTML tags as a workaround, but I'm not sure I have to resort to this... Any thoughts?
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8 years 10 months ago #130597 by Ben_V
Replied by Ben_V on topic Referencing questions and subquestions in JavaScript
Ervit, sorry I'm a bit lost with this topic... :(

Nevertheless I attach you a working survey based on my previous example.
At least it shows that EM engine can interact with javascript (variables) even if I don't think that's the best way. There is probably an easier way to achieve why you need using plain javascript ;)
Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)
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