JSLN specimen #003 livecode

apply.js

function p() {
  // call console.log with this=console and all our arguments
  // as positional args.
  console.log.apply(console, arguments);
}

p('hello');
p('hello', 'world');

function hello(x, y) {
  console.log(this.message, x, y);
}

hello.apply({message: 'DIE DIE DIE'});

var x = {message: "I'm an object!", func: hello};
x.func('arg1', 'arg2');

hello.apply({message: 'LIVE LIVE LIVE'}, ['arg1', 'arg2']);
hello.call({message: 'CALL CALL CALL'}, 'carg1', 'carg2');

function toAry() {
  return Array.prototype.slice.apply(arguments);
}

p(toAry(1, 2, 3), 'and', 'it', 'doesnt', 'matter', 'how', 'many', 'args');


function Animal() {
  this.kingdom = 'squishy';
}

function Cat() {
//  Animal.apply(this);
  Animal.call(this);
  this.type = 'cat';
}
Cat.prototype = Object.create(Animal.prototype);
Cat.prototype.constructor = Cat;

p(new Cat().kingdom);

goats.js

// This goat's name property is held in the closure.
function createGoat(name) {
  return {
    setName: function(newName) {
      name = newName;
    },
    getName: function() {
      return name;
    },
  };
}

var goat = createGoat('frankie');

console.log('goat.getName():', goat.getName());
goat.setName('alice');
console.log('after set goat.getName():', goat.getName());
console.log('goat.name:', goat.name);

var Ungulate = (function() {
  var nextGoatId = 0;
  var goatsTeleported = 0;

  function goatConstructor(name) {
    this.name = name;
    this.id = ++nextGoatId;
  }

  goatConstructor.prototype.teleport = function() {
    console.log('teleporting', this.name);
    ++goatsTeleported;
  };

  goatConstructor.getNumTeleported = function() {
    return goatsTeleported;
  }

  return goatConstructor;
})();

var bessie = new Ungulate('bessie');
var sue = new Ungulate('sue');
console.log('bessie.id:', bessie.id, 'sue.id:', sue.id);
bessie.teleport();
sue.teleport();
console.log('ungulates teleported:', Ungulate.getNumTeleported());