Multiple Ternary Operators

How about:

var icon = [ icon0, icon1, icon2 ][area];

For anyone that's confused about the multiple ternary syntax (like I was), it goes like this:

var yourVar = condition1 ? someValue
            : condition2 ? anotherValue
            : defaultValue;

You can add as many conditions as you like.

You can read up further on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Conditional_Operator

The syntax would be:

var icon = (area == 1) ? icon1 : (area == 2) ? icon2 : icon0;

But this is starting to get complicated. You may well be better off just creating a function to do this work instead:

var icon = getIcon(area);

function getIcon(area) {
  if (area == 1) { 
    return icon1; 
  } else if (area == 2) { 
    return icon2; 
  }

  return icon0;
}