- Posts: 2
- Thank you received: 0
Welcome to the LimeSurvey Community Forum
Ask the community, share ideas, and connect with other LimeSurvey users!
Randomly show X out of Y question groups in Version 3.22
- lbj4715
- Topic Author
- Offline
- New Member
Less
More
4 years 4 weeks ago #195806
by lbj4715
Randomly show X out of Y question groups in Version 3.22 was created by lbj4715
Hi there,
I try to select randomly 4 out of 8 question groups. I have already found this solution here manual.limesurvey.org/Workarounds:_Surve...of_Y_question_groups
But this workaround was based on Version 2.0, therefore I cannot follow this solution way to finish my design.
How to implement this in Version 3.22?
Great thanks for your help and time.
I try to select randomly 4 out of 8 question groups. I have already found this solution here manual.limesurvey.org/Workarounds:_Surve...of_Y_question_groups
But this workaround was based on Version 2.0, therefore I cannot follow this solution way to finish my design.
How to implement this in Version 3.22?
Great thanks for your help and time.
The topic has been locked.
- jelo
- Offline
- Platinum Member
Less
More
- Posts: 5033
- Thank you received: 1257
4 years 4 weeks ago - 4 years 4 weeks ago #195808
by jelo
The meaning of the word "stable" for users
www.limesurvey.org/forum/development/117...ord-stable-for-users
Replied by jelo on topic Randomly show X out of Y question groups in Version 3.22
Check this post/thread:
www.limesurvey.org/forum/can-i-do-this-w...lect-question-groups
www.limesurvey.org/forum/can-i-do-this-w...lect-question-groups
The meaning of the word "stable" for users
www.limesurvey.org/forum/development/117...ord-stable-for-users
Last edit: 4 years 4 weeks ago by jelo. Reason: English link
The topic has been locked.
- Joffm
- Offline
- LimeSurvey Community Team
Less
More
- Posts: 12902
- Thank you received: 3967
4 years 4 weeks ago - 4 years 4 weeks ago #195815
by Joffm
Volunteers are not paid.
Not because they are worthless, but because they are priceless
Replied by Joffm on topic Randomly show X out of Y question groups in Version 3.22
Hi,
I'd do it like this:
Create a question (QSelect) of type "short text" with the following javascript in the source code:
(the eight characters "A"..."H" represent your eight groups.
This will return something like that:
#H,A,D,F
You see, there are randomly selected 4 characters out of the eight.
Now set the relevance equation of each group accordingly (display, if the string contains the character)
Group 1: strpos(QSelect,"A")>0
Group 2: strpos(QSelect,"B")>0
...
BTW: The leading "#" is there to avoid that (in this example) the letter "H" has the index "0", which also means "not found".
Joffm
I'd do it like this:
Create a question (QSelect) of type "short text" with the following javascript in the source code:
(the eight characters "A"..."H" represent your eight groups.
Code:
<script type="text/javascript" charset="utf-8"> function shuffle(array) { var currentIndex = array.length, temporaryValue, randomIndex; // While there remain elements to shuffle... while (0 !== currentIndex) { // Pick a remaining element... randomIndex = Math.floor(Math.random() * currentIndex); currentIndex -= 1; // And swap it with the current element. temporaryValue = array[currentIndex]; array[currentIndex] = array[randomIndex]; array[randomIndex] = temporaryValue; } return array; } $(document).on('ready pjax:scriptcomplete',function(){ // Fill the array var arr =["A","B","C","D","E","F","G","H"]; arr = shuffle(arr); anumbers = '#' + arr.slice(0,4).join(','); $('#question{QID} input[type="text"]').val(anumbers).trigger('keyup'); $('#question{QID}').hide(); }); </script>
This will return something like that:
#H,A,D,F
You see, there are randomly selected 4 characters out of the eight.
Now set the relevance equation of each group accordingly (display, if the string contains the character)
Group 1: strpos(QSelect,"A")>0
Group 2: strpos(QSelect,"B")>0
...
BTW: The leading "#" is there to avoid that (in this example) the letter "H" has the index "0", which also means "not found".
Joffm
Volunteers are not paid.
Not because they are worthless, but because they are priceless
Last edit: 4 years 4 weeks ago by Joffm.
The topic has been locked.
- lbj4715
- Topic Author
- Offline
- New Member
Less
More
- Posts: 2
- Thank you received: 0
4 years 4 weeks ago #195816
by lbj4715
Replied by lbj4715 on topic Randomly show X out of Y question groups in Version 3.22
The JAVA script works very well.
Great thanks for your help.
Great thanks for your help.
The topic has been locked.