AWS, JavaScript, React - Deploy Web Apps on the Cloud - JavaScript Commenting

The video tutorial emphasizes the importance of using comments in JavaScript code. It explains how comments help in understanding the code's purpose and are beneficial for collaboration. The tutorial covers single line comments, which are denoted by double slashes, and multi line comments, which use the slash and asterisk combination. It also demonstrates how comments can prevent code execution, providing practical examples of both single and multi line comments.

Why is it considered good practice to leave comments in your code?

• To increase the file size

• To help understand the code's purpose and assist others

• To make the code run faster

• To make the code look more complex

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

• /*

• //

• #

What happens to a line of JavaScript code when it is turned into a comment?

• It runs twice

• It speeds up execution

• It is ignored during execution

• It causes an error

Which of the following is a correct way to start a multi-line comment in JavaScript?

• //

• #

  /*

For what purpose are multi-line comments best used?

• To make the code harder to read

• To explain small code snippets

• To add unnecessary information

• To explain large blocks of code