Full Stack Web Development MASTERY Course - Novice to Expert - Data Types in JavaScript
Interactive Video
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Information Technology (IT), Architecture, Mathematics
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University
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Practice Problem
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Hard
Wayground Content
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of creating an index.html file in the tutorial?
To create a database
To embed JavaScript code
To write CSS styles
To store data
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which keyword is used to declare a variable that can be reassigned in JavaScript?
let
const
var
function
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a string data type in JavaScript?
A collection of numbers
An undefined value
A collection of letters, numbers, or special characters
A true or false value
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a number treated if it is enclosed in quotes in JavaScript?
As a number
As undefined
As a Boolean
As a string
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between null and undefined in JavaScript?
Null is a number, undefined is a string
Null is an empty value, undefined is no value assigned
Null is a Boolean, undefined is a number
Null is a string, undefined is a Boolean
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an array in JavaScript?
A single number
A collection of elements
A function
A true or false value
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are object literals defined in JavaScript?
Using angle brackets
Using curly braces
Using parentheses
Using square brackets
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