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Javascript Basics

  • April 12, 2018
  • 5 replies
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T
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Hello Can anyone help me understand how to use JavaScript within Qualtrics? I'm trying to say "If QID1=2 then set QID2=2", but I can't work out how to write the "QID1=2" part. This is what I have so far, but how do I refer to QID1 from within QID2? They are both Multiple Choice. [Within QID2] Qualtrics.SurveyEngine.addOnload(function() { if ( ??? getChoiceValue(2) == true) {this.setChoiceValue(2, true)} }); I've been looking at the API documentation, but there are very few examples, and none on how to use it to refer to another question. Thanks, Tricia

Best answer by TomG

@TriciaB, @bstrahin is close, but I'm guessing that "2" is the recode, not the label. So, I think what you really want is: ``` if(parseInt("${q://QID1/SelectedChoicesRecode}") == 2) this.setChoiceValue(2, true); ```

    5 replies

    bstrahin
    Level 6 ●●●●●●
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    • bstrahin
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    • April 12, 2018
    @TriciaB i don't use Javascript that much but when I have I've often been able to use piped text to get the variables needed. I think you should be able to replace your line with ??? in with : if ("${q://QID1/ChoiceGroup/SelectedChoices}"==2) Use the piped text feature to make sure that the selected choice for your QID1 is the same.
    TomG
    Level 8 ●●●●●●●●
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    • TomG
    • Level 8 ●●●●●●●●
    • April 12, 2018
    @TriciaB, Are QID1 and QID2 on the same page? If so, do they have to be?
    T
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    • TriciaB
    • Author
    • April 12, 2018
    Thanks for your replies. This syntax below doesn't work. Is that what you meant, @bstrahin? (I've corrected the ID number in my actual syntax). if ("${q://QID1/ChoiceGroup/SelectedChoices}"==2) {this.setChoiceValue(2, true)} QID1 and QID2 are not on the same page, no. My intention is to hide QID2 and use it for filtering and validation later on, but it's not currently hidden.
    MohammedAli_Rajapkar
    QPN Level 5 ●●●●●
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    @TriciaB If QID1 is not on the same page with QID2 then you can bring the value of QID1 on QID2 page. ! Just place the above tag within QID2 question text and then use jQuery("#QID1Value").text(); which will give you the response from QID1 and then you would be able to write the "if condition" on it to set the value for QID2. Hope you are familiar with JQuery
    Regards, Mohammed Ali
    TomG
    Level 8 ●●●●●●●●
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    • TomG
    • Level 8 ●●●●●●●●
    • Answer
    • April 12, 2018
    @TriciaB, @bstrahin is close, but I'm guessing that "2" is the recode, not the label. So, I think what you really want is: ``` if(parseInt("${q://QID1/SelectedChoicesRecode}") == 2) this.setChoiceValue(2, true); ```
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