js_codequizzes3

What does the following code evaluate to?
var first_name = function (name) {
  return name;
}
first_name("bob");

--------------------------------------------------
  "bob"
--------------------------------------------------

What does the following code evaluate to?
function add(x, y) {
  return x + y;
}
add(2, 3);

--------------------------------------------------
  5
--------------------------------------------------

Create an anonymous function and assign it to the variable full_name.  The function should take two arguments, first_name and last_name, and return the two strings concatenated.

--------------------------------------------------
  var full_name = function (first_name, last_name) {
    return first_name + " " + last_name;
  }
--------------------------------------------------

What does the following code print to the console?
function square (x) {
  return(x * x);
}
console.log(square(5));

--------------------------------------------------
  25
--------------------------------------------------

What does the following code print to the console?
function square (x) { return(x * x) };
function cube (x) {
  return(x * square(x));
}
console.log(cube(2));

--------------------------------------------------
  8
--------------------------------------------------

Invoke the my_fun() function.
function my_fun() { return "I am having fun" };

--------------------------------------------------
  my_fun();
--------------------------------------------------

What does the following code print to the console?
var what = function () { return "HI!!!!" };
console.log(typeof(what));

--------------------------------------------------
  "function"
--------------------------------------------------

What does the following code print to the console?
var max_value = function(array) {
  var result = array[0];
  for (var i = 0; i < array.length; i++) {
    if (array[i] > result) {
      result = array[i];
    };
  }
  return result;
}
console.log(max_value([1, 50, 2]));

--------------------------------------------------
  50
--------------------------------------------------

What does the following code print to the console?
var arr = ["boy", 42, 23, function () { return "gotta catch 'em all, Pokemon!" }, 56];

console.log(arr[3]());

--------------------------------------------------
  "gotta catch 'em all, Pokemon!"
--------------------------------------------------

What is the code to invoke the following function?  
function kesha() {
  return "Your love is my drug";
}

--------------------------------------------------
  kesha();
--------------------------------------------------

What does the following code print to the console?
var lambchop = function () {
  return "This is the song that never ends";
}
console.log(lambchop());

--------------------------------------------------
  "This is the song that never ends"
--------------------------------------------------

What does the following code print to the console?
function doctor_name (last_name) {
  return "Dr. " + last_name
}
console.log(doctor_name());

--------------------------------------------------
  "Dr. undefined"
--------------------------------------------------

What does the following code print to the console?
function dwelling(name) {
  if (typeof(name) != "string") { throw "ArgumentError" };
  return name + " cave";
}
console.log(dwelling(42));

--------------------------------------------------
  "ArgumentError"
--------------------------------------------------

What does the following code print to the console?
function add(x, y) {
  return(x + y);
}
console.log(add(1, 2, 3, 4, 10, 20));

--------------------------------------------------
  3
--------------------------------------------------

What does the following function return?
function args () {
  return arguments;
}
console.log(args(8, 7, 6, 5, 4));

--------------------------------------------------
  [8, 7, 6, 5, 4]
--------------------------------------------------

What does the following code print to the console?
function lamp() {
  var my_special_variable = "I am special";
}
console.log(my_special_variable);

--------------------------------------------------
  ReferenceError
--------------------------------------------------

What does the following code print to the console?
function book() {
  good_book = "Slaughterhouse Five";
}
console.log(good_book);

--------------------------------------------------
  "Slaughterhouse Five" //this should be undefined though because they never call the book function.
--------------------------------------------------

num = 23;
function evil () {
  num += 5;
}
evil();
console.log(num);

--------------------------------------------------
  28
--------------------------------------------------

Create a function called min_value() that accepts an array of numbers as an argument and returns the smallest value from the array.

--------------------------------------------------
  function min_value(array) {
    var sorted = array.sort(function(a,b) {
      return a - b;
    });
    return sorted[0];
  }
--------------------------------------------------

Invoke the song() function.
function song () {
  return "Mary had a little lamb";
}

--------------------------------------------------
  song();
--------------------------------------------------

Define a function called add_numbers() that adds two numbers and throws an error if the arguments supplied to the function are not numbers.

--------------------------------------------------
  function add_numbers(i, j) {
    if (typeof i !== "number" || typeof j !== "number") {
      throw "ArgumentError";
    }
    else {
      return i + j;
    }
  }
--------------------------------------------------

Invoke the bad_hairday() function in the following array.
arr = [0, "nice", function bad_hairday () { return "YOLO" }];

--------------------------------------------------
  arr[2]();
--------------------------------------------------

Define an anonymous function and assign it to the your_name variable.  The function should return "Snoop Dogg".

--------------------------------------------------
  var your_name = function() {
    return "Snoop Dogg";
  }
--------------------------------------------------

What does the following code print to the console?
var result;
if (undefined) {
  result = function () { return "blah blah blah"; }();
} else {
  result = function () { return "meow meow meow"; }();
}
console.log(result);

--------------------------------------------------
  "meow meow meow"
--------------------------------------------------