Javascript helps avoid code duplication

I love javascript because it helps against code duplication

insead of long chain if statements you can call the right function based on properties


eg

//draw the correct shape according to element type
function redraw(elem,x)
{
   cir[elem.type](elem.coor.x,elem.coor.y)
  //......
}

see www.thinknumber.com/dismat

Can you do that in any other language