Comment by nir

Javascript example in the article:

  function triangle(a,b){
    if(a > 0 && b > 0 ){
      function sqroot(x){
        if( x > 0 ){
          return Math.pow(x,.5);
        }
        else {
          return 0;
        }
      }
      return sqroot( a*a + b*b );
    }
    else {
      return 0;
    }
  }

Can be made much cleaner:

  function triangle(a,b){
    if (a <= 0 || b <= 0 ) return 0
    
    function sqroot(x){ return ( x > 0 ? Math.pow(x,.5) : 0 ) }
  
    return sqroot( a*a + b*b )
  }

I don't know about a whitespace-sensitive language in the browser. Much JS is written by non-coders, later quickly edited on live servers (yeah, I know. But that's reality) etc.. It all comes down to taste, of course, but personally I find Ruby at least as readable as Python, so I'm not sure whitespaces are where the elegance is found.