Multiple Choice Questions on JavaScript for Grade 8 Students

📚 Quick Study Guide

• ✨ JavaScript Basics: JavaScript is a programming language used to make websites interactive. It runs in your web browser.
• 🧮 Variables: Variables are like containers that store data. Use `var`, `let`, or `const` to declare them. Example: `var age = 13;`
• ➕ Operators: Operators perform actions on variables and values. Examples: `+` (addition), `-` (subtraction), `*` (multiplication), `/` (division).
• 📝 Data Types: Common data types include numbers (e.g., `10`, `3.14`), strings (e.g., `"Hello"`), and booleans (e.g., `true`, `false`).
• 🚦 Conditional Statements: `if`, `else if`, and `else` statements allow you to execute different code blocks based on conditions.
• 🔁 Loops: Loops like `for` and `while` help repeat code. Example: `for (var i = 0; i < 5; i++) { console.log(i); }`
• 📢 Functions: Functions are reusable blocks of code. Define them using the `function` keyword. Example: `function greet(name) { console.log("Hello, " + name + "!"); }`

🧪 Practice Quiz

1. Which keyword is used to declare a variable in JavaScript?
   1. var
   2. int
   3. string
   4. boolean
2. What is the result of `5 + "5"` in JavaScript?
   1. 10
   2. "10"
   3. "55"
   4. Error
3. Which of the following is NOT a JavaScript data type?
   1. Number
   2. String
   3. Boolean
   4. Character
4. Which operator is used for assignment in JavaScript?
   1. ==
   2. ===
   3. =
   4. +
5. What will `console.log(2 > 3)` output?
   1. true
   2. false
   3. 1
   4. 0
6. Which statement is used to execute different code based on a condition?
   1. for
   2. while
   3. if
   4. function
7. What is the purpose of a `for` loop?
   1. To define a function
   2. To repeat code
   3. To declare a variable
   4. To display an alert message