The <!--...--> tag in HTML attributes code tutorial ar3school
The <!--...--> tag in HTML attributes is known as a comment tag. It is used to insert comments in the source code, which will not be displayed in the web browser. Comments are used for various purposes such as providing explanations within the code, making notes, or temporarily disabling parts of the code.
Here are some key points to understand about the HTML comment tag:
1. Syntax:
<!-- This is a comment -->
2. Purpose:
Documentation: Comments serve as a form of documentation within the HTML code, helping developers understand the purpose of specific sections or lines of code.
Debugging: Comments can be used to comment out lines of code temporarily, which can be helpful for debugging or testing different parts of a webpage.
Readability: Comments enhance the readability of the code, especially in complex projects, allowing developers to comprehend the code logic more easily.
3. Usage:
Comments can be placed anywhere in the HTML code.
They can span multiple lines or be a single line.
Nested comments are not allowed in HTML. If you open a comment (<!--), you must close it (-->) before opening another comment.
<!DOCTYPE html>
<html>
<head>
<title>Sample Webpage</title>
</head>
<body>
<h1>Hello, World!</h1>
<!-- This is a comment. It will not be displayed on the webpage. -->
<p>This is a paragraph of text.</p>
<!-- <p>This line is commented out.</p> -->
</body>
</html>
In this example, the first comment explains its purpose, while the second comment temporarily disables a line of code. When the HTML document is rendered in a web browser, the comments are ignored, and only the visible content is displayed.
In summary, the <!--...--> tag in HTML is a valuable tool for developers, aiding in code documentation, debugging, and overall code readability without affecting the appearance or functionality of the web page.
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