Summary of comment types in HTML, CSS, and JS

Adding the necessary annotations is a good habit that good programmers must have, which can greatly improve the maintainability and readability of the code. 1. HTML annotations

• <!--the contents of the note--
• Note the place (depending on your personal habits may vary):

After the end of the tag, all this is for the program to be more convenient and clear when nested, such as:

<class= "main"></div>  <!-- The contents of the note-- 

2. CSS Annotations

• /* Contents of comments */
• Location of the note:

Where a module style begins, it shows which module the style is acting on, such as:

/* Header */  {     width: 800px;      Background-color: #999;  } /* Footer */  {     width: 800px;      Background-color: #EEE;  }

3. JavaScript annotations

• Single-line Comment://comment content;

　　 Block-level Comments:/* The contents of the comment */;

• Comment Location:

Generally add comments to the upper part of a function function, explain function, author, author information, modification time. Such as:

// Output title:document.getElementById ("myH1"). Innerhtml= "Welcome to my homepage";

Summary of comment types in HTML, CSS, and JS