D3 Examples - JS Bin // source http://jsbin.com/tuqihev

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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
​
<script id="jsbin-javascript">
function Queue () {
  this.storage = ''
}
​
Queue.prototype.enqueue = function (value) {
  if (this.storage.length === 0) {
    this.storage = value
  } else {
    this.storage = value + '***' + this.storage
  }
}
​
Queue.prototype.dequeue = function () {
  const items = this.storage.split('***')
  const value = items.pop()
​
  this.storage = items.join('***')
  return value
}
​
Queue.prototype.size = function () {
  return this.storage.split('***').length
}
​
const myQueue = new Queue()
​
myQueue.enqueue('January')
console.log(myQueue.storage)
myQueue.enqueue('February')
console.log(myQueue.storage)
myQueue.enqueue('March')
console.log(myQueue.storage)
console.log(myQueue.dequeue())
console.log(myQueue.storage)
console.log(myQueue.dequeue())
console.log(myQueue.storage)
</script>
​
​
​
<script id="jsbin-source-javascript" type="text/javascript">function Queue () {
  this.storage = ''
}
​
Queue.prototype.enqueue = function (value) {
  if (this.storage.length === 0) {
    this.storage = value
  } else {
    this.storage = value + '***' + this.storage
  }
}
​
Queue.prototype.dequeue = function () {
  const items = this.storage.split('***')
  const value = items.pop()
​
  this.storage = items.join('***')
  return value
}
​
Queue.prototype.size = function () {
  return this.storage.split('***').length
}
​
const myQueue = new Queue()
​
myQueue.enqueue('January')
console.log(myQueue.storage)
myQueue.enqueue('February')
console.log(myQueue.storage)
myQueue.enqueue('March')
console.log(myQueue.storage)
console.log(myQueue.dequeue())
console.log(myQueue.storage)
console.log(myQueue.dequeue())
console.log(myQueue.storage)</script></body>
</html>
    