Javascript annotation syntax

Source: Internet
Author: User

Javascript annotation syntax

// Comment content
/* Comment */

Javascript annotation example

Use two double slashes to comment rows
// Document. Write (" ");

Use the slash star to comment out the code block (multiple lines)
VaR dreamdu = " ";
VaR dreamdu = "du ";

Tip: Too Many JavaScript comments will reduce the Javascript execution speed and loading speed. Therefore, JavaScript comments should be removed when the website is published.

Tip: Comment block (/*... */) cannot contain (/* or */, which may be generated in a JavaScript Regular Expression), which may produce syntax errors. Therefore, we recommend that you use // as the annotation code, in this tutorial, all annotations are marked.

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