Array Shuffle

shuffle.js

var arr = [ 1 , 2 , 3 , 4 , 5 ];

function shuffle( arr ) {
  var inputArr = arr;
  var shuffledArr = [];
  var loops = inputArr.length;
  var randomNumber;
  
  for ( var i = 0; i < loops; i++ ) {
    randomNumber = Math.floor( Math.random() * ( loops - i ) );
    shuffledArr.push( inputArr[ randomNumber ] );
    inputArr.splice( randomNumber , 1 );
  }
    
  return shuffledArr
  
}