Evaluating branch logic in JS | XM Community
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Evaluating branch logic in JS

  • 28 June 2021
  • 2 replies
  • 19 views
Y

Hi,
As many others before us, we are struggling with inexact progress bars when there are a lot of optional blocks in a long survey, causing participants to drop out.
Is there a way to evaluate, in JS, if some particular branches in the survey flow will be taken or not (before they've been reached by the participant)? Ideally I don't want to hardcode the logic in the JS as this is error prone, but instead use the same logic as the existing survey flow.
Thanks in advance!

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Best answer by Yarin 30 June 2021, 19:04

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pogi
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Userlevel 3
Badge +8

You could use Embedded in your survey flow for each branch. Once set you can use subsequent branches and JS with the embedded data variables.

Y

That doesn't sound like it will work since I need to know which blocks I will reach before Qualtrics has gotten there.
I ended up solving this by injecting generated Javascript (if ("${q://QID5/....}") { ... }) in the footer evaluating the survey flow of the survey at run-time. A bit cumbersome, but seems to work.

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