The dualSidedSlider function allow for the measurement of trade-offs between two items. It automatically allocates percentages (or some other allocation) to two items when the slider is moved and records both values. Functionality includes:

• Supports 'Not Applicable'
• Support allocations other than percentage

Here is a quick video demonstration:

This function is available for a reasonable fee. Contact TomG on the Qualtrics Community to learn more.

Add the dualSidedSlider function to the survey header to make it available to any page/question in the survey. Go to Look & Feel → General → Header edit → and paste the provided freezeTopQ function JS:

<script>/*Paste dualSidedSlider function JS here*/</script>

Alternatively, paste the dualSidedSlider function JS into a question's JS outside the existing Qualtrics functions to make it available to questions on the page.

Add JS to call the dualSidedSlider function to apply it to the first question on a page (the question to be frozen at the top) as follows:

Qualtrics.SurveyEngine.addOnload(function() {
	dualSidedSlider(this);
});

To adjust top or bottom question padding, specify the desired options in the second function argument as an object. For example:

Qualtrics.SurveyEngine.addOnload(function() {
	freezeTopQ(this,{paddingTop:"5px",paddingBottom:"5px"});
});

paddingBottom specifies the bottom padding of the first question.

Default: theme default

paddingTop specifies the top padding of the first question.

Default: theme default