- A Represents an empty or non-existent value
- B Stores numeric values
- C Holds textual data
- D Manages boolean values
Data Types Introduction - Quiz
- A String
- B Boolean
- C Number
- D Array
- A Represents an undefined value
- B Denotes a deliberate absence of any object value
- C Holds boolean values
- D Stores textual data
- A Boolean
- B String
- C Null
- D Undefined
- A Textual information
- B Numeric values
- C True or false values
- D Objects and arrays
- A It represents textual information
- B It is immutable and unique
- C It holds numeric values
- D It denotes a deliberate absence of any object value
- A Number
- B Boolean
- C Array
- D String
- A Storing large integers beyond the limits of the "number" type
- B Representing floating-point numbers
- C Handling textual information
- D Denoting a deliberate absence of any object value
- A "number"
- B "undefined"
- C "string"
- D "boolean"
- A Boolean
- B String
- C ArrayBuffer
- D Symbol
Results:
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🟢 Correct Answers: 🔴 Wrong Answers:
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Data Types Introduction - Quiz
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- A. Represents an empty or non-existent value
- B. Stores numeric values
- C. Holds textual data
- D. Manages boolean values
Remarks:
Explanation:
The "undefined" primitive data type in JavaScript is used to indicate that a variable has been declared but has not been assigned any value. It represents an empty or non-existent value, serving as a default state for variables.
- A. String
- B. Boolean
- C. Number
- D. Array
Remarks:
Explanation:
The "Number" primitive data type in JavaScript is used for storing numeric values, including whole numbers and decimals. It is suitable for handling mathematical operations and representing quantities with precision.
- A. Represents an undefined value
- B. Denotes a deliberate absence of any object value
- C. Holds boolean values
- D. Stores textual data
Remarks:
Explanation:
The "null" primitive data type in JavaScript is used to explicitly indicate the absence of any object value. It is often assigned to variables to represent a deliberate lack of value or the intentional absence of an object.
- A. Boolean
- B. String
- C. Null
- D. Undefined
Remarks:
Explanation:
The "String" primitive data type in JavaScript is employed for storing and manipulating textual information. It allows developers to work with sequences of characters, making it essential for handling text-based data.
- A. Textual information
- B. Numeric values
- C. True or false values
- D. Objects and arrays
Remarks:
Explanation:
The "boolean" primitive data type in JavaScript is used to represent logical values, specifically true or false. It is essential for making decisions and controlling the flow of a program through conditional statements.
- A. It represents textual information
- B. It is immutable and unique
- C. It holds numeric values
- D. It denotes a deliberate absence of any object value
Remarks:
Explanation:
The "symbol" primitive data type in JavaScript is unique and immutable, making each symbol distinct. It is often used for creating unique identifiers in objects and preventing unintended modifications.
- A. Number
- B. Boolean
- C. Array
- D. String
Remarks:
Explanation:
The "Array" primitive data type in JavaScript is used for storing collections of elements. It allows developers to organize and manipulate multiple values within a single variable.
- A. Storing large integers beyond the limits of the "number" type
- B. Representing floating-point numbers
- C. Handling textual information
- D. Denoting a deliberate absence of any object value
Remarks:
Explanation:
The "bigint" primitive data type in JavaScript is designed for storing large integers that exceed the limits of the standard "number" type. It ensures precision for integer values of arbitrary size.
- A. "number"
- B. "undefined"
- C. "string"
- D. "boolean"
Remarks:
Explanation:
The "typeof" operator in JavaScript returns the string "undefined" when applied to a variable of the "undefined" primitive data type. It is a tool for dynamically determining the type of a given variable.
- A. Boolean
- B. String
- C. ArrayBuffer
- D. Symbol
Remarks:
Explanation:
The "ArrayBuffer" primitive data type in JavaScript is used to represent binary data. It provides a low-level, generic structure for raw binary data and is often used in conjunction with typed arrays.