title: Extensions of Javascript function shorthand
body: <p>I know it's possible to define a function this way:</p>
  
  <p><code>x=y=&gt;y*y</code></p>
  
  <p>which corresponds to:</p>
  
  <p><code>function x(y){ return y*y; }</code></p>
  
  <p>But I was wondering, is it possible to extend this to two or more arguments?</p>
  
  <p>i.e. <code>x=y,z=&gt;y+z</code> or similar to correspond to <code>function x(y,z){ return y*z; }</code></p>
  
  <p>Is there a similar convention to the very first example that allows for two or more arguments? I know that the <code>x=y,z=&gt;y+z</code> syntax isn't right as I get errors regarding the definitions of at least one of variables... So how can it be done, or rather... <em>can</em> it be done??</p>