Web Reference: This guide teaches you when comments add value and when they are noise, how to make your code self-documenting so it needs fewer comments, how to use JSDoc to create professional function documentation, and how to use special comment tags that help you and your team track work in progress. JavaScript comments can be used to explain JavaScript code, and to make it more readable. JavaScript comments can also be used to prevent execution, when testing alternative code. What Are Comments in JavaScript, and When Should You Use Them? Comments in programming are used to provide additional context for the code or leave notes for yourself and others. Comments are lines or blocks of text that are ignored by the JavaScript engine when your code is executed.
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