The method of JavaScript annotation

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JavaScript comments can be used to improve the readability of your code.

JavaScript comment

JavaScript does not perform comments.

We can add comments to interpret the JavaScript or improve the readability of the code.

One-line comments begin with / /.

This example uses single-line comments to explain the code:

Example

/ / output title:

Document.getElementById ("myH1") [xss_clean] = "Welcome to my home page"

/ / output paragraph:

Document.getElementById ("myP") [xss_clean] = "this is my first paragraph."

JavaScript multiline comment

Multiline comments begin with / * and end with * /.

The following example uses multiple lines of comments to explain the code:

Example

/ *

The following code outputs

A title and a paragraph

And will represent the beginning of the home page

, /

Document.getElementById ("myH1") [xss_clean] = "Welcome to my home page"

Document.getElementById ("myP") [xss_clean] = "this is my first paragraph."

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