​x
 
<html>
<body>
​
<script type="text/javascript">
​
Array.prototype.enqueue = function(vItem) {
  this.push(vItem);
};
​
Array.prototype.dequeue = function() {
  return this.shift();
};
​
var arr = new Array(3)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"
​
arr.enqueue("Bill");
document.write(arr);
​
document.write("<br />")
​
arr.dequeue();
document.write(arr);
​
</script>
​
</body>
</html>
​