Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <button>Test</button>
<script id="jsbin-javascript">
//Rest operator

//The ...(rest operator) takes a list of numbers and packs them togheter in an array.

function sumUp(...toAdd){
  let result = 0;
  for(let i = 0; i < toAdd.length; i++){
    result += toAdd[i];
  }
  return result;
}

console.log(sumUp(100,20,30));
</script>


<script id="jsbin-source-javascript" type="text/javascript">//Rest operator

//The ...(rest operator) takes a list of numbers and packs them togheter in an array.

function sumUp(...toAdd){
  let result = 0;
  for(let i = 0; i < toAdd.length; i++){
    result += toAdd[i];
  }
  return result;
}

console.log(sumUp(100,20,30));</script></body>
</html>