Useful JavaScript Game Extensions: Number#floor and Number#ceil

Parts 14 and 15 of my 256 part series on useful JavaScript game extensions.

JavaScript is missing a lot of features that help a language be object oriented. I don’t see why since they are so easy to add.

/**
 * @returns The number truncated to the nearest integer of less than or equal value.
 *
 * (4.9).floor(); // => 4
 * (4.2).floor(); // => 4
 * (-1.2).floor(); // => -2
 */
Number.prototype.floor = function() {
  return Math.floor(this);
};

/**
 * @returns The number truncated to the nearest integer of greater than or equal value.
 *
 * (4.9).ceil(); // => 5
 * (4.2).ceir(); // => 5
 * (-1.2).ceil(); // => -1
 */
Number.prototype.ceil = function() {
  return Math.ceil(this);
};

Author: Daniel X

Heretic priest of the Machine God. I enjoy crawling around in Jeff Bezo's spaceship, bringing technology to the people, and long walks outside of time and space. View all posts by Daniel X