title: Swap Endianness javascript
body: <p>I'd like to know how to swap the Endianness of a hex value with javascript (ex:  4075 -> 7540, 3827 -> 2738)
  If so, how?
  Thanks.</p>
  
  <p>EDIT: Thanks @kay, what I want to do is swap the hex's Endianness.</p>