NYC Codecademy Group - JavaScript Quiz | Attempts: 352

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| By Ronantopolski

Ronantopolski

Community Contributor

Quizzes Created: 1 | Total Attempts: 352

| Attempts: 352

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1/17 Questions

Var numbers = [1, 2, 3] is an example of:
- Array
- Function
- Object
- Method

About This Quiz

This quiz will test your knowledge of JavaScript.

Good Luck!
-Ron

2.

Var = myName is an example of a
- Variable
- String
- Object
- Method
Correct Answer

A. Variable

Explanation

variables are used to hold values or expressions

See Codecademy lesson

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3.

Select which of the options below are data types
- Number
- String
- Function
- Boolean
Correct Answer(s)

A. Number
A. String
A. Boolean

Explanation

The three data types are number, string and Boolean.

See Codecademy lesson

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4.

I++
- Incrementor
- Operator
- Iterator
- Decrementor
Correct Answer

A. Incrementor

Explanation

Incrementors/Decrementors are used to increase/reduce the value of a variable by 1
See Codecademy lesson

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5.

Var i; for (i = 0; i < 2; i++) { console.log("i is now equal to " + i);
- Function
- Object
- For Loop
- While Loop
Correct Answer

A. For Loop

Explanation

In JavaScript, there are two different kind of loops:
for - loops through a block of code a specified number of times
while - loops through a block of code while a specified condition is true
See Codecademy lesson

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6.

is an example of a
- Method
- Object
- Function
- Variable
Correct Answer

A. Function

Explanation

A function contains code that will be executed by an event or by a call to the function.

See Codecademy lesson:

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7.

Var i = 0; while ( i < 2 ) { console.log( "i is now " + i ); i++; }
- While Loop
- Incrementor
- For Loop
- Function
Correct Answer

A. While Loop

Explanation

In JavaScript, there are two different kind of loops:

for - loops through a block of code a specified number of times
while - loops through a block of code while a specified condition is true

See Codecademy lesson

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8.

if (name.length > 0) { console.log("Please enter your name."); } else { console.log("Hello " + name); } is an example of:
- If Statement
- If...Else Statement
- Else If Statement
- Switch Statement
Correct Answer

A. If...Else Statement

Explanation

If the condition (name.length>0) is true, statement1 will be executed. Otherwise, statement2 will be executed.
See Codecademy lesson

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9.

switch (GPA){ case 90: letterGrade = "A+"; break; case 80: letterGrade = "A"; break; case 70: letterGrade = "C"; break; case 60: letterGrade = "D"; break; case 50: letterGrade = "E"; break; default: letterGrade = "F"; break; }
- If...Else Statement
- Ternary Operator
- Else If Statement
- Switch Statement
Correct Answer

A. Switch Statement

Explanation

Switch statements are a shorthand way to write if else statements when there are many different cases, and each case has a different outcome.
See Codecademy lesson

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10.

is an example of
- If statement
- If...Else Statement
- Switch Statement
- Ternary Operator
Correct Answer

A. Ternary Operator

Explanation

Ternary operators are a shorthand way of writing if else statements.
See Codecademy lesson

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11.

For the object below, what does the word 'name' represent? var dog = {name: "Daisy", age: 6};
- Property
- Variable
- Value
- String
Correct Answer

A. Property

Explanation

In this object, 'name' is a property. A property is a type of information that describes the object and is always paired with a value.
Objects can written in two different ways, depending on how the properties are defined within them:

1. Object Literal Notation:

2. Object Constructor Notation

In addition to representing properties in two different ways when creating an object, you can also access properties two different ways:

1. Dot Notation

2. Bracket Notation:

See Codecademy lesson

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12.

Var dog = (); dog.name = "Daisy"; dog.age = 6; is an example of creating an object using:
- Object Literal Notation
- Object Constructor Notation
- Dot Notation
- Bracket Notation
Correct Answer

A. Object Constructor Notation

Explanation

Objects can written in two different ways, depending on how the properties are defined within them:

1. Object Literal Notation:

2. Object Constructor Notation

In addition to representing properties in two different ways when creating an object, you can also access properties two different ways:

1. Dot Notation

2. Bracket Notation:

See Codecademy lesson

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13.

is an example of creating an object using:
- Dot Notation
- Object Literal Notation
- Bracket Notation
- Object Constructor Notation
Correct Answer

A. Object Literal Notation

Explanation

Objects can written in two different ways, depending on how the properties are defined within them:

1. Object Literal Notation:

2. Object Constructor Notation

In addition to representing properties in two different ways when creating an object, you can also access properties two different ways:

1. Dot Notation

2. Bracket Notation:

See Codecademy lesson

Rate this question:
14.

Var dogName = dog.name is an example of accessing an object's property using:
- Dot Notation
- Bracket Notation
- Object Literal Notation
- Object Constructor Notation
Correct Answer

A. Dot Notation

Explanation

When you access a property, you are setting a variable equal to the the value of a property in a particular object.

In this example, we are setting variable dogName equal to the value of the 'name' property of the 'dog' object.

See Codecademy lesson

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15.

is an example of accessing an object's property using:
- Object Literal Notation
- Bracket Notation
- Dot Notation
- Object Literal Notation
Correct Answer

A. Bracket Notation

Explanation

When you access a property, you are setting a variable equal to the the value of a property in a particular object.

In this example, we are setting variable dogName equal to the value of the 'name' property of the 'dog' object.

See Codecademy lesson

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16.

is an example of a:
- Method
- Variable
- Object
- Function
Correct Answer

A. Function

Explanation

A function contains code that will be executed by an event or by a call to the function. In this case, we would call the function by writing a command: hello(); which would display the text "i am saying hello" in the console.

See Codecademy lesson

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17.

In the function below, what does the text '(w, l)' represent? var area = function (w, l) { return w * l; };
- Variables
- Parameters
- Strings
- Object
Correct Answer

A. Parameters

Explanation

A parameter is a variable that is processed by the function to generate a given result. In this case, if we run the function as follows: area(2,3); we will get a result of 6. To further clarify, parameters are the variables in the declaration of a function (w,l) while arguments are the specific values that get passed when running the function (2,3)

See Codecademy lesson

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Mar 21, 2023

Quiz Edited by
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Jun 02, 2012

Quiz Created by
Ronantopolski

NYC Codecademy Group - JavaScript Quiz

Var numbers = [1, 2, 3] is an example of:

Quiz Preview

Var = myName is an example of a

Select which of the options below are data types

I++

Var i; for (i = 0; i < 2; i++) { console.log("i is now equal to " + i);

is an example of a

Var i = 0; while ( i < 2 ) { console.log( "i is now " + i ); i++; }

if (name.length > 0) { console.log("Please enter your name."); } else { console.log("Hello " + name); } is an example of:

switch (GPA){ case 90: letterGrade = "A+"; break; case 80: letterGrade = "A"; break; case 70: letterGrade = "C"; break; case 60: letterGrade = "D"; break; case 50: letterGrade = "E"; break; default: letterGrade = "F"; break; }

is an example of

For the object below, what does the word 'name' represent? var dog = {name: "Daisy", age: 6};

Var dog = (); dog.name = "Daisy"; dog.age = 6; is an example of creating an object using:

is an example of creating an object using:

Var dogName = dog.name is an example of accessing an object's property using:

is an example of accessing an object's property using:

is an example of a:

In the function below, what does the text '(w, l)' represent? var area = function (w, l) { return w * l; };