JS quiz 4

ja_quiz4

1. var person = {
  name: "Joe Camel",
  age: 42,
  status: "dead"
}
console.log(typeof person);

ANSWER:  Object

2. var hat = {
  size: "large",
  color: "orange"
}
console.log(hat.size);

ANSWER: large

3. var teddy_bear = {
  texture: "fluffy"
}
console.log(teddy_bear["texture"]);

ANSWER: error [wrong]

4. var fat_joe = {
  crew: "Terror Squad"
}
fat_joe.crew = "something";
console.log(fat_joe.crew);

ANSWER: Terror squad [wrong]

5. var pen = {};
pen.ink = "blue";
console.log(pen.ink);

ANSWER: blue

6. What does the following code print to the console?
var walking_dead = {
  topic: "zombie apocalypse"
}
console.log(walking_dead["main_character"]);

ANSWER:  undefined

7. var bottle = {
  contents: function () { return "some fine bubbly" },
  color: "green"
}
console.log(bottle.contents());

ANSWER: some fine bubbly, green [wrong]

8. var yao = {
  self: function () { return this }
}
console.log(yao === yao.self());

ANSWER: true

9. var lebron = {
  occupation: "basketball",
  introduction: function () {
    return "My name is LeBron and I play " + this.occupation
  }
}
lebron.introduction();

ANSWER: "My name is LeBron and I play basketball"

10.  var square = {
  side_length: 4,
  area: function () { 
    return this.side_length * this.side_length;
  }
}
console.log(square.area());

ANSWER:  16

11. var me = {
  first_name: "Matthew",
  last_name: "Powers",
  full_name: function () {
    return this.first_name + " " + this.last_name;
  }
}
console.log(me.full_name());

ANSWER: "Matthew Powers"

12. var mug = {
  capacity: "10 fluid ounces",
  customer_message: function (desired_size) {
    if (desired_size > 10) { return "This mug is not large enough for you" };
  }
}
console.log(customer_message(13));

ANSWER:  you need to call mug.customer_message(13)

13. function global_function () { return "I can be called anywhere" };
var an_obj = {
  something: global_function
}
console.log(an_obj.something());

ANSWER: "I can be called anywhere"

14. var person = {
  age: 32,
  address: {
    city: "New York",
    state: "NY"
  }
}
console.log(person.address.city);

ANSWER:  "New York"

15. var golf = {
  type: "sport",
  clubs: {
    high_end: "taylor made",
    low_end: "rusty basement clubs"
  }
}  
golf.clubs.high_end = "callaway";
console.log(golf.clubs.high_end);

ANSWER: callaway

16. var ideal_scene = {
  status: "chillin'",
  location: "somewhere with good waves",
  thoughts: "bling bling"
}
delete ideal_scene.thoughts
console.log(ideal_scene.thoughts);

ANSWER = undefined [wrong]

17. var zombie = new Object();
zombie inherits the attributes of  object

18.
var game = { title: "tic tac toe" };
var same_game = { title: "tic tac toe" };
console.log(game === same_game );
ANSWER = false

19. var lyric = { lyric: "right now, aight" };
console.log(lyric === lyric);
ANSWER: true

20. var ruff_ryders = {
  dmx: {
    birthplace: "Mount Vernon, NY"
  }
}
console.log(ruff_ryders.lox.birthplace);

ANSWER: error  

21. var ruff_ryders = {
  dmx: {
    birthplace: "Mount Vernon, NY"
  }
}
console.log(ruff_ryders.lox && ruff_ryders.lox.birthplace);

ANSWER: Same error as above [not entirely correct]

22. var a = {
  x: "y"
}
console.log("x" in a);

ANSWER: "y" [wrong]

23. var abc = {
  zz: "ll"
}
console.log(abc.hasOwnProperty("zz"));

ANSWER: "ll" [wrong]

24. var dmx = {
  occupation: "rapper"
  real_name: "Earl Simmons";
}

25. var circle = {
  radius: 10
}

SCORE: 18/25