The bpSliders function converts a Qualtrics Slider question into Bipolar or AHP Sliders. Functionality includes:

• Support and automatic detection of Mobile and non-Mobile Friendly
• Control of minimum spacing between scale labels
• Turning display of the numeric scale on or off
• Optional suppression of numeric scale minus signs
• Repeating of numeric scale
• Highlighting of unanswered rows

Here are some examples:

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

To make the function available to all questions in the survey, copy the function to the Survey Header inside a script tag: Add the bpSliders function to the survey header to make it available to any question in the survey. Go to Look & Feel → General → Header edit → and paste the provided bpSliders function JS:

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

Alternatively, paste the bpSliders 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 bpSliders function to apply it to the Slider question as follows:

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

To override the default options, specify the desired options in the second function argument as an object. For example:

Qualtrics.SurveyEngine.addOnload(function() {
	bpSliders(this,{showScale:true,repeatScale:3});
});

Label each slider with its left and right labels using the span class bpsRight like this:

Simple<span class="bpsRight">Complex</span>

allowZero specifies if zero answers should be allowed.

Default: true (on)

highlightErrors turns highlighting of unanswered rows on or off.

Default: true (on)

highlightErrorStyle defines the CSS style used for highlighting unanswered rows.

Default: 1px solid red

lwidth ONLY applies to non-mobile friendly sliders and specifies the width of the slider labels in pixels.

Default: 120

repeatScale defines how often the numeric scale should be repeated if showScale is true (e.g., repeatScale:3 means repeat every 3 rows). 0 (zero) turns repeat off.

Default: 0

separationPercent specifies the minimum amount of separation that should be maintained between scale labels as a percentage of the slider width.

Default: 24

showScale specifies whether the numeric scale should be displayed.

Default: false

suppressScaleMinus specifies whether numeric scale minus signs should be suppressed is showScale is true (e.g. a numeric scale that goes from -10 to 10).

Default: true