noisy/index.html

## index.html
<!DOCTYPE html>
<html>
<head lang="pl">
    <meta charset="UTF-8">
    <script src="main.js"></script>
    <title>most often</title>
</head>
<body>
    <h2>Podaj elementy tablicy, oddzielone przecinkami</h2><input id="data">
    <button onclick="often()">Run</button>
    <h2 id="view"></h2>
    <h2 id="view2"></h2>
</body>
</html>

## main.js
function often() {
    var data = document.getElementById("data").value;
    var array = data.split(",");
    console.log(array);
    var dominant = 0;
    var dominant_counter = 0;
    var grups = {};
    for (var i = 0; i < array.length; i++) {
        if (grups[array[i]]) {
            grups[array[i]] += 1;
        } else {
            grups[array[i]] = 1;
        }
    }

    for (var n in grups) {
        console.log(n);
        console.log(grups[n]);
        if (grups[n] > dominant_counter) {
            dominant_counter = grups[n]
            dominant = n;
        } else if (grups[n] == dominant_counter) {
            dominant = dominant +" " +n;
        }
    }
    document.getElementById("view").innerHTML = (dominant_counter + " razy wystepuja elementy: " );
    document.getElementById("view2").innerHTML = (dominant);
}
	<!DOCTYPE html>
	<html>
	<head lang="pl">
	<meta charset="UTF-8">
	<script src="main.js"></script>
	<title>most often</title>
	</head>
	<body>
	<h2>Podaj elementy tablicy, oddzielone przecinkami</h2><input id="data">
	<button onclick="often()">Run</button>
	<h2 id="view"></h2>
	<h2 id="view2"></h2>
	</body>
	</html>
	function often() {
	var data = document.getElementById("data").value;
	var array = data.split(",");
	console.log(array);
	var dominant = 0;
	var dominant_counter = 0;
	var grups = {};
	for (var i = 0; i < array.length; i++) {
	if (grups[array[i]]) {
	grups[array[i]] += 1;
	} else {
	grups[array[i]] = 1;
	}
	}

	for (var n in grups) {
	console.log(n);
	console.log(grups[n]);
	if (grups[n] > dominant_counter) {
	dominant_counter = grups[n]
	dominant = n;
	} else if (grups[n] == dominant_counter) {
	dominant = dominant +" " +n;
	}
	}
	document.getElementById("view").innerHTML = (dominant_counter + " razy wystepuja elementy: " );
	document.getElementById("view2").innerHTML = (dominant);
	}