Simple slot machine implementation that can be used with copy and paste

`python`


<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Slot machine 1</title>
<style>
input {
	width:40px;
	font-size:30px;
	text-align:center;
}
button {
	width:50px;
}
.x1 {
	padding:10px 0;
}
.x1 div {
	float:left;
	width:60px;
	text-align:center;
}
</style>
<script>
window.onload = function() {
	var a = document.getElementById('a');
	var b1 = document.getElementById('b1');
	var b2 = document.getElementById('b2');
	var b3 = document.getElementById('b3');
	var c1 = document.getElementById('c1');
	var c2 = document.getElementById('c2');
	var c3 = document.getElementById('c3');
	var t1 = null;
	var t2 = null;
	var t3 = null;

	function start() {
		if (t1) {
			clearInterval(t1);
		}
		if (t2) {
			clearInterval(t2);
		}
		if (t3) {
			clearInterval(t3);
		}
		c1.value = Math.floor(Math.random() * 10);
		c2.value = Math.floor(Math.random() * 10);
		c3.value = Math.floor(Math.random() * 10);
		t1 = setInterval(function () {
			c1.value = (+c1.value + 1) % 10;
		}, 200);
		t2 = setInterval(function () {
			c2.value = (+c2.value + 1) % 10;
		}, 200);
		t3 = setInterval(function () {
			c3.value = (+c3.value + 1) % 10;
		}, 200);
	}

	function stop1() {
		if (t1) {
			clearInterval(t1);
			t1 = null;
		}
		check();
	}

	function stop2() {
		if (t2) {
			clearInterval(t2);
			t2 = null;
		}
		check();
	}

	function stop3() {
		if (t3) {
			clearInterval(t3);
			t3 = null;
		}
		check();
	}

	function check() {
		if (!t1 && !t2 && !t3) {
			if (c1.value == c2.value && c1.value == c3.value) {
				alert('Around!');
			} else {
				alert('Off!');
			}
		}
	}

	a.addEventListener('click', start);
	b1.addEventListener('click', stop1);
	b2.addEventListener('click', stop2);
	b3.addEventListener('click', stop3);

	start();
}
</script>
</head>
<body>
	<button type="button" id="a">start</button>
	<div class="x1">
		<div>
			<input type="text" id="c1">
			<button type="button" id="b1">stop</button>
		</div>
		<div>
			<input type="text" id="c2">
			<button type="button" id="b2">stop</button>
		</div>
		<div>
			<input type="text" id="c3">
			<button type="button" id="b3">stop</button>
		</div>
	</div>
</body>
</html>
That's all from the scene!
