HTML is the foundation of every website on the internet. It is a markup language that is used to create web pages. However, sometimes it is necessary to include notes or explanations in the code that should not be visible to users. In such situations, HTML comments come in handy. 

If you are wondering how to add comment to HTML or how to HTML comment out, this blog is definitely for you. 

In this blog, we will discuss what HTML comments are, their definition, usage, and how to comment in HTML. Moreover, we will also have a look at HTML comment shortcuts to make things easier for you. 

So, let’s get started without any further delays!

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What is HTML Comment?

HTML comments are lines of code that are not displayed on the web page. They are used to add notes or explanations to the code for the developer’s reference. When you comment out HTML, they are not seen by the users and do not affect the appearance or functionality of the web page. 

Definition and Usage of HTML Comments

HTML comments are written between <!– and –> tags. You can use HTML comments to explain the purpose of the code, provide instructions to other developers, or temporarily remove a section of the code.  

For example, if you want to hide a section of code temporarily, you add comment HTML to hide it. Adding a comment to HTML is useful when testing or debugging the code.

How to Comment in HTML?

html comment

Source: vivianmaxine.com

There are several ways to add comment to HTML code. Single-line comments, multiline comments, or commenting out in HTML. In the following sections, we will look in-depth at how you can comment in HTML. 

How to Add a Single-line Comment in HTML? 

To add a comment to HTML, you can use <!– at the beginning of the comment and –> at the end of the comment. Everything between these two tags will be treated as a comment. 

Here is an example of a single-line HTML comment out. 

php

<!– This is a single-line comment –>  

You can use multiline HTML comment out other than single-line HTML comment out. The next paragraph will show you an example of an HTML multiline comment. 

How to add HTML Multiline comment?  

html comment

Source: googleusercontent.com

Another way to add comment to HTML is multiline comments. Single-line comments are time-consuming and tedious, so you can use multiline comments to save time and be more effective.

Here is the example and syntax to create a multiline comment in HTML. 

php

<!–

This is a

multiline

comment

–>

Note that you cannot nest HTML comments. If you want to add a comment within a comment, you need to close the first comment before adding the second one.

Other than single-line comments and HTML multiline comments, you can also use HTML comment out to add a comment in HTML. Read the below section to learn how to comment out HTML. 

Commenting Out Code in HTML:

The next way to add comment HTML is by wrapping it with <!– and –> tags. Commenting out a call will temporarily remove the code from the web page.

Additionally, comments in HTML are useful when you want to test or debug a specific section of code.

Here is an example of commenting out a code in HTML. 

php

<!–

<p>This section of code is commented out.</p>

–>

After knowing how to add comment HTML, let’s have a look at how the HTML comment shortcut works in the next section.  

How to Use HTML Comment Shortcuts?

Other than typing out a comment in HTML, you can leverage HTML comment shortcuts to type your codes faster and more efficiently.

You can use Ctrl + / on PC or Command + / on Apple to fasten up your process. 

How to Write an Inline Comment in HTML?

If you want to add comment in HTML for a specific line of code, you can use an inline comment.

An inline comment is a comment that appears on the same line as the code. To create an inline comment, use the <!– and –> tags, like this:

Here is an example of an inline comment in HTML:

php

<p>This is some text.</p><!– This is an inline comment –> You can continue a code here. </p>

The inline comment will not affect the appearance or functionality of the web page.

How to Comment Out HTML?

html comment

Source: techfry.com

To comment out a section of HTML code, you can use the <!– and –> tags to wrap the code like this:

php

<!–

<p>This section of code is commented out.</p>

<p>This section of code is also commented out.</p>

–>

Commenting in HTML will prevent the code from being displayed on the web page.

How to Use a Tag for HTML Comment Out? 

Other than the techniques mentioned above for comments in HTML, you can use a comment tag in HTML to comment out.

Below is an example of an HTML comment tag. 

php

<comment>This is a comment.</comment>

However, this tag is not supported in all web browsers, so it is not recommended to use it in production code. The only browser that supports comment tags in HTML is Internet Explorer (IE). 

Other popular browsers like Chrome, Firefox, Opera, Safari, and Android don’t support the HTML comment tag. So if you use a comment tag on these browsers, it won’t get hidden in the browser and will be visible to browser users. 

What are Conditional Comments in HTML?

Conditional comments are comments that are only displayed in specific web browsers. They target different versions of Internet Explorer or other web browsers that may have compatibility issues. 

Here is an example of a conditional comment that targets Internet Explorer 9 and below:

php

<!–[if lte IE 9]>

<p>This code is only displayed in Internet Explorer 9 and below.</p>

<![endif]–>

This code will only be displayed in Internet Explorer 9 and below and will be ignored by all other web browsers.

Also Read: How to Use Python Split() String Method?

FAQs: 

1. Are HTML Comments Visible On the Web Page?

No, HTML comments are not visible on the web page. They are only visible in the HTML code.

2. Can HTML Comments be Used to Hide Content From the Web Page?

No, HTML comments are not intended to hide content from the web page. They are simply used to add notes or explanations to the code.

3. Can HTML Comments Be Nested?

No, HTML comments cannot be nested. If you want to add a comment within a comment, you need to close the first comment before adding the second one.

4. Can HTML Comments be Used for Debugging Purposes?

Yes, you can use HTML comments for debugging purposes. You can add comments to your code to explain what it does or to indicate where the problem might be.

5. Are There Any Best Practices For Using HTML Comments?

Yes, some best practices for using HTML comments include keeping them concise, using them sparingly, and avoiding unnecessary or redundant comments. 

It’s also a good idea to format your comments consistently and to use them to explain the intent or purpose of the code rather than the mechanics of how it works.

Conclusion

In conclusion, HTML comments are an important tool for web developers to add notes and explanations to their code. They can be used to comment out code, create multiline comments, add inline comments, and moreUsingHTML comments effectively makes your code more readable, maintainable, and easier to debug.

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