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Is there anything wrong with passing the number of sides into the anonymous function?

I was playing with my code and wrote this:

var dice = {
  roll: function(sides) {
    var randomNumber = Math.floor(Math.random() * sides) + 1;

What is the disadvantage (if any) of doing this rather than setting the number of sides as a value to a key called sides? I though it would make the code more portable.

1 Answer

Casey Ydenberg
Casey Ydenberg
15,622 Points

The only problem is that you have to remember how many sides your dice has each time you call roll. It's better to be able to create a dice with a certain number of sides and then roll it as many times as you like.

function createDice(sides) {
  dice = {
    sides: sides,
    roll: function() {
      var randomNumber = Math.floor(Math.random() * this.sides) + 1;
  return dice;