OOP – Methods
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Is a method a function declared inside a class body?
2. Do class methods use the 'function' keyword?
3. Is a method called on an instance using dot notation?
4. Does calling a method require parentheses?
5. Can 'this' be used inside a method to access the instance's properties?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1bark() { console.log(this.name + " says woof"); } | AWrong - calling a method needs parentheses | |
| 2myDog.bark(); | BCalls the bark method on the myDog instance | |
| 3A function declared inside a class, without 'function' | CDeclares a method that prints the dog's name and a sound | |
| 4Refers to the instance a method is called on | DWrong - class methods don't use the 'function' keyword | |
| 5function bark() { console.log("woof"); } | Ethis | |
| 6myDog.bark; | Fshow() { ... } |
C
Definitions
method
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
____() {
console.log(this.name + " says woof");
}
2.
myDog.____();
3.
____() {
console.log(this.color);
}
4.
myCar.____();
5.
console.log(____.name + " says woof");
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
myDog.Bark();
B
let myDog = new Dog();
C
class Dog {
D
bark() { console.log(1); }
E
}
Question 2
A
myCat.meow;
B
let myCat = new Cat();
C
class Cat {
D
meow() { console.log(2); }
E
}
Question 3
A
class Bird {
B
function sing() {
C
console.log("tweet");
D
}
E
}
Question 4
A
class Duck {
B
function quack() {
C
console.log("quack");
D
}
E
}
Question 5
A
class Fish {
B
swim() {
C
console.log("splash")
D
}
E
}
Answer Key
OOP – Methods
Section A: Quick Questions
Q1
B — Yes
Q2
B — No
Q3
A — Yes
Q4
A — Yes
Q5
A — Yes
Section B: Match the Pairs
Q1
bark() { console.log(this.name + " says woof"); } → Declares a method that prints the dog's name and a sound
Q2
myDog.bark(); → Calls the bark method on the myDog instance
Q3
A function declared inside a class, without 'function' → show() { ... }
Q4
Refers to the instance a method is called on → this
Q5
function bark() { console.log("woof"); } → Wrong - class methods don't use the 'function' keyword
Q6
myDog.bark; → Wrong - calling a method needs parentheses
Section C: Definitions
Q1
method — A function declared inside a class body, called on an instance using dot notation.Section D: Fill in the Blanks
Q1
bark() {
console.log(this.name + " says woof");
}Q2
myDog.bark();Q3
show() {
console.log(this.color);
}Q4
myCar.show();Q5
console.log(this.name + " says woof");Section E: Spot the Error
Q1
A — Method names are case-sensitive - it should be bark(), not Bark().
Q2
A — Calling a method needs parentheses: myCat.meow().
Q3
B — Class methods skip the 'function' keyword - just write sing() {.
Q4
B — Class methods skip the 'function' keyword - just write quack() {.
Q5
C — This line is missing a semicolon, but that's not required in JS.