add item at the back of the queue and take off old items from the front of the queue in array - Javascript Array Operation

Javascript examples for Array Operation:Array Element

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Description

add item at the back of the queue and take off old items from the front of the queue in array

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript">
    window.onload=function(){/*from w  w  w. j  a  va  2 s .c  o  m*/
function nextInLine(arr, item) {
  arr.push(item);
  return arr.shift();
}
console.log(nextInLine([], 1)); // 1
console.log(nextInLine([2], 1)); // 2
console.log(nextInLine([5,6,7,8,9], 1)); // 5
    }

      </script> 
   </head> 
   <body>  
   </body>
</html>

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