Javascript code to count selections in both matrix and singular questions (Qualtrics)

I have made the following code Javascript code to count the number of times 0, 5, or 10 are selected in questions throughout my survey on Qualtrics. I place this code in each question:

Qualtrics.SurveyEngine.addOnload(function() {
    var isCorrect10 = 10;
    var currentCounter10 = Qualtrics.SurveyEngine.getEmbeddedData("Counter10");
    
    if (!currentCounter10) {
        currentCounter10 = 0;
    }
    
    var isCorrect0 = 0;
    var currentCounter0 = Qualtrics.SurveyEngine.getEmbeddedData("Counter0");
    
    if (!currentCounter0) {
        currentCounter0 = 0;
    }
    
    var isCorrect5 = 5;
    var currentCounter5 = Qualtrics.SurveyEngine.getEmbeddedData("Counter5");
    
    if (!currentCounter5) {
        currentCounter5 = 5;
    }
    

    // If it's selected, increment 
    if (isCorrect10) {
        currentCounter10++;
        Qualtrics.SurveyEngine.setEmbeddedData("Counter10",currentCounter10.toString());
    }
    
    if (isCorrect0) {
        currentCounter0++;
        Qualtrics.SurveyEngine.setEmbeddedData("Counter0",currentCounter0.toString());
    }
    
    if (isCorrect5) {
        currentCounter5++;
        Qualtrics.SurveyEngine.setEmbeddedData("Counter5",currentCounter5.toString());
    }
    

});

For this I initialize embedded data for Counter0, Counter5 and Counter10, all at 0.

This works perfectly for questions where it is just one singular slider. However, I want this to work for matrix questions were there are multiple questions. I want to count every appearance of count in each slider of a matrix, and also be compatible with the non-matrix questions. So each count (0,5,10) should be the total of all selections across all questions. How can I modify the javascript accordingly?

EDIT:

I had thought that the above code works, but it appears to not even work sufficiently for the single slider questions. Instead it just merely logs 1 value in the counter for each single slider, regardless of the presence of the values in question.

So, how can I make a counter that logs the presence of each value in question in all sliders throughout my survey?

EDIT 2

Thanks to the comment below, I’ve modified the code to I think be closer now but it still doesn’t fully work. Currently, I have the following:

Qualtrics.SurveyEngine.addOnload(function() {
    // Get current question ID
    var currentQuestionID = this.getQuestionInfo().QuestionID;
    
    // Define result names for counters
    var Counter10 = "Counter10";
    var Counter0 = "Counter0";
    var Counter5 = "Counter5";
    
    // Retrieve and parse embedded data values for counters
    var currentCounter10 = parseInt(Qualtrics.SurveyEngine.getEmbeddedData(Counter10), 10) || 0;
    var currentCounter0 = parseInt(Qualtrics.SurveyEngine.getEmbeddedData(Counter0), 10) || 0;
    var currentCounter5 = parseInt(Qualtrics.SurveyEngine.getEmbeddedData(Counter5), 10) || 0;

    // Function to get the selected value from a slider based on its number
    function getSliderValue(sliderNumber) {
        var sliderId = currentQuestionID + '_' + sliderNumber;
        var responseTextField = document.getElementById(sliderId);
        if (responseTextField) {
            return parseInt(responseTextField.value, 10); // Convert to integer
        } else {
            console.log("Element with ID " + sliderId + " not found.");
            return null;
        }
    }

    document.getElementById('NextButton').onclick = function(event) {
        // Assumingup to 5 sliders, since 4 is max
        for (var i = 1; i <= 5; i++) {
            var selectedValue = getSliderValue(i);
            if (selectedValue !== null) {
                // Increment the appropriate counter based on the selected value
                if (selectedValue === 10) {
                    currentCounter10++;
                    Qualtrics.SurveyEngine.setEmbeddedData(Counter10, currentCounter10.toString());
                } else if (selectedValue === 0) {
                    currentCounter0++;
                    Qualtrics.SurveyEngine.setEmbeddedData(Counter0, currentCounter0.toString());
                } else if (selectedValue === 5) {
                    currentCounter5++;
                    Qualtrics.SurveyEngine.setEmbeddedData(Counter5, currentCounter5.toString());
                }
                // Exit loop after processing the selected value
                break;
            }
        }

        // Proceed to the next question
        Qualtrics.SurveyEngine.navClick(event, 'NextButton');
    };
});

This still results in all 0s for all my counters. I think this is because it doesn’t work to select and evaluate the values of each individual slider with a group of sliders. This was my best attempt, but can anyone show an example of how to evaluate and increment based on every level of the same multi-slider question?

EDIT 3

I’m a bit closer now, thanks to great help in the comments, but I still can’t get it to work fully. I can now read the embedded data values set at 0 and get/store the selected answers as a variable, but I can’t seem to increment based on the selected values. My code is the following:

Qualtrics.SurveyEngine.addOnPageSubmit(function (type) { // To record the selection when the page is submitted

if (type == "next") {

var selChoice = this.getSelectedChoices();

// Set Embedded Data
    
var currentcount0 = parseInt(Qualtrics.SurveyEngine.getEmbeddedData('count0'),10); 
var currentcount5 = parseInt(Qualtrics.SurveyEngine.getEmbeddedData('count5'),10);
var currentcount10 = parseInt(Qualtrics.SurveyEngine.getEmbeddedData('count10'),10);

if (selChoice == 5) {

const newcount5 = currentcount5 + 1 ;
Qualtrics.SurveyEngine.setEmbeddedData("count5", newcount5)};

if (selChoice == 0) {

const newcount0 = currentcount0 + 1 ;
Qualtrics.SurveyEngine.setEmbeddedData("count0", newcount0)};
    
if (selChoice == 10) {

const newcount10 = currentcount10 + 1 ;
Qualtrics.SurveyEngine.setEmbeddedData("count10", newcount10)};
    
    
}
    
    
    
});

When this runs, the values of the count variables stay at 0, regardless of what is chosen. Might this be because the data is not read as numeric? Is there some other issue with simply adding +1 to the values?