Javascript while loop to deplete an array from either direction.

while.js

var x = [1,2,3]

//back to front
while(x.length){
 var value = x.pop();
 console.log(value);
}

//array is now empty, lets replace it
var x = [1,2,3]

//front to back
while(x.length){
 var value = x.shift();
 console.log(value);
}