The formatLikertMatrix function formats a likert matrix question by formatting the columns by percentage and enabling better control of repeat headers. It also optionally supports adding a divider line before the last column, adding mobile labels, and hiding selected cells.

Functionality includes:

• Format columns based on percentage width of label/statement column
• Reliably switches to and from mobile accordion mode
• Controls display of repeating headers display when carry forward or display logic is used
• Controls vertical alignment of repeating headers
• Add 'NA' column divider line and adjust scale labels accordingly
• Display scale labels in mobile accordion mode
• Hide specified cells

To make the function available to all questions in the survey, copy the function to the Survey Header inside a script tag: Add the formatLikertMatrix 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 formatLikertMatrix function JS:

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

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

Set the following single choice Likert Matrix options:

• Check Mobile Friendly
• Check Transpose if needed.
• Uncheck Position Text Above
• Select Repeat Headers options as needed. All Repeat Header options are supported.

Add JS to call the formatLikertMatrix function to apply it to the Likert Matrix question as follows:

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

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

Qualtrics.SurveyEngine.addOnload(function() {
	formatLikertMatrix(this,{labelWidthPercent:30,lastNA:true});
});

To specify text to be shown only in mobile accordion mode, place it inside a hidden span with the class mfInstr. For example:

1<span class="mfInstr" style="display:none;"> - Extremely Dissatisfied</span> 

allRepeatEvery specifies how often to show repeated headers when Repeat Headers 'All' is checked.

Default: 1

hideCells is an object that specifies the cells to be hidden. Format for specifying cells is:
scalePt:[choiceNum1,choiceNum2,…]

Example:
hideCells: {2:[1,4,7],6:[3,5]}

allRepeatEvery specifies how often to show repeated headers when Repeat Headers 'All' is checked.

Default: 1

Default: {}

labelWidthPercent specifies the width of the label column as a percentage of question width. The remaining width is divided evenly among the other columns.

Default: 35

lastNA set to true to add a divider before the last column and adjust scale labels.

Default: false