javascript-patterns/function-patterns/callback.html at master · Hello71/javascript-patterns · GitHub

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<!doctype html>
<html lang="en">
<head>
<title>JavaScript Patterns</title>
<meta charset="utf-8">
</head>
<body>
<script>
var findNodes = function (callback) {
	var i = 100000,
		nodes = [],
		found;

	// check if callback is callable
	if (typeof callback !== "function") {
		callback = false;
	}

  while (i) {
    i -= 1;

    // complex logic here...

    // now callback:
    if (callback) {
      callback(found);
    }

    nodes.push(found);
  }
  return nodes;
};

// a callback function
var hide = function (node) {
  node.style.display = "none";
};

// find the nodes and hide them as you go
findNodes(hide);

// reference
// http://www.jspatterns.com/
// http://shop.oreilly.com/product/9780596806767.do?sortby=publicationDate
</script>
</body>
</html>