HTML | Comments

The comment tag (<!– Comment –>) is used to insert comments in the HTML code. It is a good practice of coding so that coder and the reader can get help to understand the code. It is helpful to understand the complex code. The comment tag is useful during the debugging of codes.

  • It is simple piece of code which is wiped off (ignore) by web browsers i.e, not displayed by browser.
  • It helps the coder and reader to understand the piece of code used for specially in complex source code.

Syntax:

<!-- Comments here -->

Types of HTML Comments: There are three types of comments in HTML which are:

  • Single-line comment
  • Multi-lines comment
  • Using <comment> tag

Single-line comment:

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        Single line comment
    </title>
</head>
  
<body>
  
    <!-- Paragraph element -->
    <p>GeeksforGeeks</p>
</body>
  
</html>

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Output:




GeeksforGeeks


Here you can see the single-line comment.


Multi-line comment: Multiple lines can be comment using (<!–  –>) tag.











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<!DOCTYPE html> 


<html> 


  


<head> 


    <title> 


        Multi-line comment 


    </title> 


</head> 


  


<body> 


      


    <!-- The multi-line comment is useful 


        to comment multiple line 


          


        Paragraph element  -->


          


    <p>GeeksforGeeks</p> 


</body> 


  


</html> 



















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Output:


GeeksforGeeks


Here we can see that in the comment section we have used multiple lines but still it’s not printed.


Using <comment> tag: There are few browsers that support <comment> tag, Internet Explorer is one of them.











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<!DOCTYPE html> 


<html> 


  


<head> 


    <title> 


        HTML comment tag 


    </title> 


</head>  


  


<body> 


    <p> 


        This is <comment>not</comment> 


        Internet Explorer. 


    </p> 


</body> 


      


</html>                     



















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Output:

If we use Internet Explorer, then it will show the following result:


This is  Internet Explorer.


But when we don’t use Internet Explorer, then it will show the following result:


This is not Internet Explorer


Supported Browser: The browsers supported by <!–  –> tag are listed below: 


    

  • Google Chrome
    • 

  • Internet Explorer
    • 

  • Firefox
    • 

  • Opera
    • 

  • Safari
    • 



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