king.karen83
king.karen83 3d ago β€’ 10 views

Multiple Choice Questions on Data Types in Web Development

Hey there! πŸ‘‹ Ever get tangled up in the different data types when building websites? It's a super common hurdle, but don't worry, I've got you covered! This guide + quiz will make you a data type pro in no time! Let's dive in! πŸ’»
πŸ’» Computer Science & Technology

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colleen448 Jan 3, 2026

πŸ“š Quick Study Guide

  • πŸ”’ String: Represents textual data. Enclosed in single quotes (' ') or double quotes (" "). Example: "Hello, world!"
  • #️⃣ Number: Represents numeric values. Can be integers (e.g., 10) or floating-point numbers (e.g., 3.14).
  • βœ… Boolean: Represents a logical value, either true or false.
  • πŸ—„οΈ Null: Represents the intentional absence of a value. It's a special value that means "no value".
  • πŸ“’ Undefined: Represents a variable that has been declared but has not been assigned a value.
  • πŸ“¦ Object: A complex data type that can store collections of key-value pairs. Example: { name: "John", age: 30 }
  • πŸ“Š Array: An ordered list of values. Example: [1, 2, 3, "apple"]

πŸ§ͺ Practice Quiz

  1. Which data type is used to represent textual information?
    1. A. Number
    2. B. Boolean
    3. C. String
    4. D. Object
  2. Which data type represents a true/false value?
    1. A. String
    2. B. Number
    3. C. Boolean
    4. D. Null
  3. What does the null data type represent?
    1. A. Zero
    2. B. An empty string
    3. C. Absence of a value
    4. D. Undefined value
  4. Which of the following is an example of a Number data type?
    1. A. "123"
    2. B. true
    3. C. 123
    4. D. null
  5. What is the data type of [1, 2, 3]?
    1. A. Object
    2. B. String
    3. C. Array
    4. D. Number
  6. Which data type can store key-value pairs?
    1. A. String
    2. B. Array
    3. C. Object
    4. D. Boolean
  7. What is the data type of a variable that has been declared but not assigned a value?
    1. A. Null
    2. B. String
    3. C. Undefined
    4. D. Object
Click to see Answers
  1. C
  2. C
  3. C
  4. C
  5. C
  6. C
  7. C

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