jsruby.js

// Making Javascript more like Ruby is fun. :) 

// Times
Number.prototype.times = function(callback) {
  for (var i = 1; i <= this.valueOf(); i++) {
    callback();
  }
}

3..times(function() {
  console.log("Hello");
});

(3).times(function() {
  console.log("Hello");
});

// Unless

const unless = (condition, callback) => {
  if (!condition) {
    callback();
  }
};

let x = 5;
unless (x === 4, () => {
  console.log("x is not 4");
});