gilbertoquinteroA/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>background random with JS</title>
  script src="js.js"</>
</head>
<body>
 <button>Change color</button>


</body>
</html>

## js.js
var btn = document.querySelector('button');


function random(number) {
  return Math.floor(Math.random()*(number+1));
}

btn.onclick = function() {
  var rndCol = 'rgb(' + random(255) + ',' + random(255) + ',' + random(255) + ')';
  document.body.style.backgroundColor = rndCol;
}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>background random with JS</title>
	script src="js.js"</>
	</head>
	<body>
	<button>Change color</button>


	</body>
	</html>
	var btn = document.querySelector('button');


	function random(number) {
	return Math.floor(Math.random()*(number+1));
	}

	btn.onclick = function() {
	var rndCol = 'rgb(' + random(255) + ',' + random(255) + ',' + random(255) + ')';
	document.body.style.backgroundColor = rndCol;
	}