JavaScript: Get All Methods on an Object

getOwnMethods.js

// Get all methods on an object
function getOwnMethods(obj) {
  var props = Object.getOwnPropertyNames(obj);
  return props.filter(function(prop) {
    return obj[prop] && obj[prop].constructor &&
      obj[prop].call && obj[prop].apply;
  });
}



// Example Object

var Module = {
  str: "a string",
  array: [1, 2, 3, 4],
  alpha: function() {
    return this;
  },
  beta: function() {
    return this;
  },
  delta: function() {
    return this;
  }
};
console.log(
  getOwnMethods(Module)
);

// > ["delta", "alpha", "beta"]