JavaScipt Array Concat

So, when you concatenate two arrays in javascript, you shouldn't add the original array to the list of arrays to concatenate, unless you want to exponentially grow the array.

{
   var array1 = [ 'John Locke' , 'Jack Shepard' ];
   var array2 = [ 'Michael Scott', 'Dwight Schrute'];

   var array3 = array1.concat(array2);
}

array3 is === [ 'John Locke' , 'Jack Shepard' , 'Michael Scott' , 'Dwight Schrute'];