The mcSelectAll function changes a choice in a multi-select multiple choice to a 'Select all/Deselect all' choice. Features include:

• Select all/Deselect all choice can be placed in any order (first, last, etc.)
• Dynamic choice text
• Works with any alignment (vertical, horizontal, column)
• Compatible with exclusive choices
• Compatible with back button
• Translation friendly

Here is a quick video demonstration:

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 mcSelectAll 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 mcSelectAll function JS:

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

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

To specify the Select all/Deselect all choice, put the choice text inside a span with the class selectAll (selectAll is the default class and can be changed in options). For example:

<span class="selectAll">Select all</span>

Please note: The choice text displayed to the respondent is specified in the selectText and deselectText options. The choice text inside the selectAll span is NOT displayed.

Add JS to call the mcSelectAll function to apply it to the multiple choice question as follows:

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

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

Qualtrics.SurveyEngine.addOnload(function() {
	mcSelectAll(this,{selectText:'Select all the above',deselectText:'Deselect all the above'});
});

The choice text displayed when the Select/Deselect all choice is selected.

Default: 'Deselect all'

The html class name of the span used to identify the Select/Deselect all choice. See Select/Deselect All Choice Setup.

Default: 'selectAll'

The choice text displayed when the Select/Deselect all choice is NOT selected.

Default: 'Select all'

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