How To Add A Comment In Javascript

Comments help explain code they are not executed and hence do not have any logic implementation. We can also use them to temporarily disable parts of your code.1. Single Line CommentsA single-line comment in JavaScript is denoted by two forward slashes , JavaScript A single line comment cons

Multiline comments in JavaScript are another way to add explanations or notes in your code, but they allow you to write multiple lines of comments all at once, unlike single line comments which are for just one line. In JavaScript, you create a multiline comment by using to start the comment

Writing Javascript Comments. There are two different ways to write comments in Javascript on a single line or on multiple lines. The syntax for each comment type is slightly different, but there can be some overlap between them stylistically if a developer prefers. Single Line Comments. Single line Javascript comments start with two forward

Multiline Comments. In JavaScript, multiline comments allow you to add comments that can span more than one line. They start with and end with . For example, This is a multiline comment. It can span several lines. let numberOfStudents 50 console.lognumberOfStudents Here, we have used a multiline comment that can span any number

Types of Comments in JavaScript. JavaScript supports two types of comments Single-line comments When writing short inline comments, use . This is a single-line comment let x 10 Initialize x with 10. Multi-line comments For more detailed explanations or to temporarily deactivate code blocks, use . This is a multi-line comment.

An important sign of a good developer is comments their presence and even their absence. Good comments allow us to maintain the code well, come back to it after a delay and use it more effectively. Comment this Overall architecture, high-level view. Function usage. Important solutions, especially when not immediately obvious. Avoid comments

Single line comments are very useful to add a quick comment or explanation over a line of code. In JavaScript, a single line comment can be added by using two forward slashes . Below are some examples of single-line comments in JavaScript code.

Most code editors and IDEs provide shortcuts to quickly add comments to your code. For example, in VS Code Visual Studio Code, you can Press Ctrl Windows or Command macOS to comment as well as uncomment a line of code use your mouse to select that line Press Shift Alt A Windows or Shift Option A macOS to add a block comment use your mouse to select that block.

JavaScript comments can also be used to prevent execution, when testing alternative code. Single Line Comments. Adding in front of a code line changes the code lines from an executable line to a comment. This example uses to prevent execution of one of the code lines

Posting Comments in JavaScript Applications. Sometimes, you might wonder how to post a comment in JavaScript within the context of user interactions. For instance, allowing users to add comments on a blog post. This is a different use case where JavaScript interacts with HTML elements to capture and display user input.