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<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
<!--[if IE]>
  <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<style>
  article, aside, figure, footer, header, hgroup, 
  menu, nav, section { display: block; }
</style>
</head>
<body>
</body>
</html>
 
var a, b;
a = [1, 2, 3, 15, 20, 12, 14, 18, 7, 8];
display("a.length before = " +  a);
b = a.splice(6,3);
display("a.length after = " +  a);
display("b[0] = " + b);
function display(msg) {
  var p = document.createElement('p');
  p.innerHTML = msg;
  document.body.appendChild(p);
}
Output 300px

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