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TOPIC: javascript and variables in the QID

javascript and variables in the QID 1 year 7 months ago #94117

I have a series of questions. They are strings. Call them Question1, Question2, Question3, etc.

I want to write script to generate the QID and display stuff. Example:
<script type="text/javascript" charset="utf-8">
var i = 1; 
var theQID = "{Question" + i + ".answer}";
document.write(theQID);
</script>

I also tried
<script type="text/javascript" charset="utf-8">
var i = 1; 
var theQID = "{that.Question" + i + ".answer}";
document.write(theQID);
</script>

Both of these codes to not display anything. But this code DOES display something
<script type="text/javascript" charset="utf-8">
 
document.write({Question1});
 
</script>

Can someone help me to know what is going on with this? Is this possible to do? Or do you always have to input the QID literally, and not use text manipulation with variables? Thanks
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javascript and variables in the QID 1 year 7 months ago #94130

  • tpartner
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The problem is that Expression Manager parses the placeholders inside the curly braces at the server level so you won't get JavaScript objects, you will just get strings.

Additionally, you can't use JavaScript variable in the Expression Manager placeholders.
Cheers,
Tony Partner

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javascript and variables in the QID 1 year 7 months ago #94131

  • sys_sby
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Hello Tony,

Is it possible to use Expression Manager (EM) in Javascript
if it is possible, how to do it?

Thank you very much

Regards
Sys_sby
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javascript and variables in the QID 1 year 7 months ago #94141

  • DenisChenu
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Is
it possible to use Expression Manager (EM) in Javascript
if it is possible, how to do it?
Yes, or no ....

Yes:
$('#question{QID}').hide();

or

if({Q1.NAOK}=="Y") if Q1 is in another group (before the script).

But no for:

if({Q1.NAOK}=="Y") if Q1 is in the same page.

Denis
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javascript and variables in the QID 1 year 7 months ago #94149

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Yes, as Denis points out, EM can only be used to return strings if the EM variable is available before the page loads. So, his first example would actually be rendered as $('#question123').hide(); in the source.

Another note - EM is not parsed at all in template.js.
Cheers,
Tony Partner

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javascript and variables in the QID 1 year 7 months ago #94150

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Hello Denis/Tony,

Thanks for reply

In Javascript, Is it possible to get question number automatically by Expression Manager: {Qcode.qid}, so the script as like a below: $('#question{Q123.qid}').hide();

Thank you very much

Regards
Sys_sby
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javascript and variables in the QID 1 year 7 months ago #94152

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Yes but it would be safer to use:
$('#question{that.Q123.qid}').hide();

The {Qcode.qid} variable doesn't seem to work for question types with sub-questions (arrays, etc.)
Cheers,
Tony Partner

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javascript and variables in the QID 1 year 7 months ago #94163

  • DenisChenu
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tpartner wrote:
Yes but it would be safer to use:
$('#question{that.Q123.qid}').hide();

The {Qcode.qid} variable doesn't seem to work for question types with sub-questions (arrays, etc.)
Think it's more easy to use directly {QID} and {SGQ}

Seems to work great everywhere. For sub question line use {SGQ}SQ01, {SGQ}SQ02 etc ...

Denis
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javascript and variables in the QID 1 year 7 months ago #94165

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Seems to work great everywhere.
No, not everywhere. See attached image and survey.

Capture_2013-03-23.JPG


File Attachment:

File Name: limesurvey_survey_846179.lss
File Size: 20 KB
Cheers,
Tony Partner

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Last Edit: 1 year 7 months ago by tpartner.
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javascript and variables in the QID 1 year 7 months ago #94166

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Oh, you're right, in another question type need that for subquestion, or use QCODE_SQ1.qid then it take the qid of the parent question.

For exemple:
{ARRAY_SQ1==ARRAY_SQ2} is allways true. :)

Denis
PS: when i say work great everywhere, speaking of {QID} and {SGQ}. It's the only EM who don't change if you change the question type.
Last Edit: 1 year 7 months ago by DenisChenu.
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