andreasonny83 · February 26, 2016 10:06
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <html>
 <head>
 <meta name="description" content="Javascript nested functions">
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
 </head>
 <body>
  <a href="https://jsbin.com/viposub/edit?html,js,output">Jsbin available here</a>
  <p>Result: <span id="result"></span></p>
 <script id="jsbin-javascript">
 var result = document.getElementById("result");

 function sum(a) {
  var res = a || 0;

  console.log('1: ', res);
  
  function add(b) {
      res += b;
      console.log('2: ', res);
      
      return add;
  }

  add.get = function() {
    return res;
  }

  return add;
 }

 result.innerHTML = sum(1)(1)(10)(5).get();
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta name="description" content="Javascript nested functions">
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>JS Bin</title>
	</head>
	<body>
	<a href="https://jsbin.com/viposub/edit?html,js,output">Jsbin available here</a>
	<p>Result: <span id="result"></span></p>
	<script id="jsbin-javascript">
	var result = document.getElementById("result");

	function sum(a) {
	var res = a \|\| 0;

	console.log('1: ', res);

	function add(b) {
	res += b;
	console.log('2: ', res);

	return add;
	}

	add.get = function() {
	return res;
	}

	return add;
	}

	result.innerHTML = sum(1)(1)(10)(5).get();
	</script>
	</body>
	</html>