JavaScript Comments

In this lesson, we will learn how we can comment on code in JavaScript. Comments in JavaScript make code easier to read and understand by providing hints that a programmer can add. 

There are two different ways to write comments in Javascript: 

• Single Line Comments
• Multi Line Comments

Single Line Comments

SIngle line comments starts with two forward slashes( // ). All text after the two forward slashes until the end of a line makes up a comment, even when there are forward slashes in the commented text. For example,

const name = "Jack";

// printing  Hello Jack  on the console
console.log("Hello " + name);

Here, // printing Hello Jack on the console is a comment.

You can also use single line comment like this:

const name = "Jack"; // Jack value is assigned to the name variable.
const test = "hello world"
//console.log(test)

Here, // console.log(test) does not log the value of the test in the console due to the two forward slashes.

Multi Line Comments

Javascript multiline comments, also known as block comments, start with a forward slash followed by an asterisk (/*) and end with an asterisk followed by a forward slash (*/). They do not require a comment delimiter character on every line and may contain new lines. For example,

/*  This is a multi line comment example.
You can have multiple line of text here.
*/

Conclusion

In this lesson, you have learned how about JavaScript comments.