Examples of Single-Line Comments in Python and JavaScript (Grade 8)

📚 Quick Study Guide

• 💬 In both Python and JavaScript, single-line comments are used to add explanations or notes to your code that the computer will ignore.
• 🐍 In Python, you create a single-line comment using the # symbol. Anything after the # on that line is considered a comment.
• ☕ In JavaScript, you create a single-line comment using two forward slashes //. Anything after the // on that line is a comment.
• 💡 Comments are important for making your code readable and understandable for yourself and others.
• ✍️ Use comments to explain what your code does, why you made certain choices, or to temporarily disable code without deleting it.

Practice Quiz

1. Which symbol is used to create a single-line comment in Python?
   1. //
   2. /*
   3. #
   4. --
2. Which symbol is used to create a single-line comment in JavaScript?
   1. #
   2. //
   3. /*
3. Which of the following is a valid single-line comment in JavaScript?
   1. # This is a comment
   2. // This is a comment
   3. /* This is a comment */
4. Where should comments be placed in your code?
   1. Only at the beginning of the file.
   2. Only at the end of the file.
   3. Anywhere they are needed to explain the code.
   4. Nowhere, comments are not needed.
5. Why is it important to use comments in your code?
   1. To make the code shorter.
   2. To make the code harder to understand.
   3. To improve code readability and maintainability.
   4. Comments are not important.