How to annotate code in html (a brief analysis of the method)

HTML is a commonly used markup language. When writing code, we often need to comment on some complex or difficult-to-understand code so that ourselves or others can better understand the meaning of the code. This article will introduce how to comment code in HTML.

The syntax of comment code in HTML is:

The content of the comment can be any text, comment The content will not be interpreted by the browser, nor will it be displayed in the browser. The purpose of comments is to provide code writers or others with instructions and explanations for the code.

Comments in HTML can be placed anywhere in the HTML code, including tags, attributes, text and scripts.

For comments within tags and attributes, comments in HTML should be placed in angle brackets, as shown below:

<p><!-- 这里是段落的注释 --></p>
<img src="example.jpg" alt="示例图片"><!-- 这里是图片的注释 -->

For comments within text and scripts, use the comment symbol directly, that is Can:

这是一段文字<!-- 这里是文字的注释 -->
<script>
  // 这里是脚本的注释
  var a = 1; // 可以在脚本内使用双斜线注释
</script>

It should be noted that comments in HTML are not allowed to be nested, that is, comments cannot be added within comments, otherwise code parsing errors may occur. In addition, when using comments, be careful not to put comment symbols in HTML tags, otherwise they will be parsed into HTML tags instead of comments.

In short, when writing HTML code, comments are a very important and practical function. Proper use of comments can make it easier for ourselves and others to better understand and maintain the code.

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