"THIS", Apply, Call

Question 1

what is “this”

Answer 1

the object that is executing the current function

Question 2

if the function is part of an object we call it a _____

Answer 2

method

Question 3

if the function is part of an object “THIS” references _____

Answer 3

itself

Question 4

If the function is a regular function and not part of an object “THIS” references _______

Answer 4

global object

Question 5

global object is_______ object in browsers & _______ in node

Answer 5

window

global

Question 6

this. table = “windowtable”;
console. log(__________);

//Call on a GLOBAL scale

Answer 6

window.table

Question 7

this.garage = {
table: “junk”;
}
//Call on a GLOBAL scale

Answer 7

this. garage.table

window. garage.table

Question 8

let stevesRoom = {
 table: "steves table"
};
console.log(this.stevesRoom.table);
// returns?

Answer 8

syntax error

“this” refers to global object

Question 9

this.garage = {
table: “junk”,
cleanTable(){
console.log(cleaing ${this.table})
}
}

this.garage.table(); // returns

Answer 9

type error

Question 10

this.table = ‘window table’;

const cleanTable = function (){
    console.log(`cleaing ${this.table}`)
};
cleanTable();

Answer 10

type error

“this” doesn’t have access to global property.

Question 11

The _______method calls a function with a given this value, and arguments provided as an array (or an array-like object).

Answer 11

apply()

Question 12

The _____ method calls a function with a given this value and arguments provided individually.

Answer 12

call()

Question 13

function Product(name, price) {
  this.name = name;
  this.price = price;
}

function Food(name, price) {
\_\_\_\_\_\_\_\_\_\_(this, name, price);
  this.category = 'food';
}

console.log(new Food('cheese', 5).name);
// expected output: "cheese"

Answer 13

product.call

Question 14

const cleanTable = function (soap){
    console.log(`cleaing ${this.table} using ${soap}`)
};
cleanTable();

this.garage = {
table: “junk”,
}
//use call to output;
// cleaing junk using some soap

Answer 14

cleanTable.call(this.garage, ‘some soap’);

Question 15

The ______ method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

Answer 15

bind()

Question 16

var module = {
  x: 42,
  getX: function() {
    return this.x;
  }
}

var unboundGetX = module.getX;
console.log(unboundGetX());
// expected output:

Answer 16

undefined

Question 17

var module = {
  x: 42,
  getX: function() {
    return this.x;
  }
}

var boundGetX = unboundGetX.bind(module);
console.log(boundGetX());
// expected output:

Answer 17

42

Question 18

HOW TO FIX THIS

const cleanTable = function (soap){
const innerFunction = function(_soap){
console.log(cleaing ${this.table} using ${soap})
}
innerFunction(soap);
};
cleanTable();

Answer 18

use arrow function

arrow function uses

Question 19

_______ & ________ use the “THIS” keyword

Answer 19

class
constructor

Question 20

when creating a function method in class you omit the __________key word

Answer 20

function

Question 21

var array = [‘a’, ‘b’];
var elements = [0, 1, 2];
array.push.apply(array, elements);
console.info(array); //

Answer 21

[“a”, “b”, 0, 1, 2]`