licvis

<div class="class1">Element 1</div>
    <div class="class2">Element 2</div>
    <div class="class1">Element 3</div>
    <div class="class3">Element 4</div>
    <div class="class2">Element 5</div>
    
    <p id="result"></p>

// An array of class names you want to count
        var classNamesToCount = ['class1', 'class2', 'class3'];

        var classCounts = {}; // Object to store class counts

        classNamesToCount.forEach(function(className) {
            var elementsWithClass = document.getElementsByClassName(className);
            classCounts[className] = elementsWithClass.length;
        });

        // Display the counts
        var resultText = "Number of elements with different classes:\n";
        for (var className in classCounts) {
            resultText += "'" + className + "': " + classCounts[className] + "\n";
        }

        document.getElementById("result").textContent = resultText;