# Summary

- **Comments**: A way to include useful notes or explanations in the code, or to temporarily ignore a piece of code.
- **Single-line Comment**: Used to add a comment that only takes up one line.
- The syntax of a single-line comment is:
```javascript
  // your comment text here …
```

What symbol is used to create a single-line comment in JavaScript?

Which of the following is a correct example of a single-line comment?

In this section, we will get an introduction to JavaScript by looking at the basic syntax of the language, along with a few terms and concepts which will build our foundation for learning more advanced features of the language in the upcoming section. This section will include hands-on tasks which will help you practice all the concepts and remember the contents naturally without effort.

In this section, we will look at how to store some data and retrieve it later on using Variables. Moreover, we will explore some basic data types and look at how they interact with each other.

In this chapter we will look at how to write expressions which evaluate to "true" or "false" based on the conditions, for example "Is X equal to Y?". Afterwards, we will build on that concept and learn to write "Conditional Statements" which will enable us to conditionally execute specific lines of code.

Introduction to JavaScript

Comments

Summary

1. What symbol is used to create a single-line comment in JavaScript?

2. Which of the following is a correct example of a single-line comment?