Does commented code affect performance JavaScript?

Do comments affect performance in JavaScript?

Comments do not affect performance in a significant matter. How I understand it, the javascript program is being loaded into the memory. In this process the comments are being ignored and are not loaded into the memory.

Do comments slow down JavaScript?

Whitespaces and comments increase the size of the JavaScript file, which slows down the actual downloading of the file from the server – minification is the process of stripping unnecessary characters from a JavaScript file to make it smaller and easier to download.

Does commented code affect performance?

In Lexical analysis, comments are skipped, it is basically like you didn’t write anything. So no, they do not affect performance in any way.

Do comments slow down a program?

We could say that the code and the comments, in the form you wrote them, are simply not present, when the program is running. So no, comments do not slow down the programs at run-time.

Can comments affect code?

Comments are stripped from the compiled code, they can not slow down your compiled program. All the comments can do is to slow down the compiler (it should parse the source code and cut the comments off).

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Does commented code affect performance PHP?

The only way it is slower, is that the interpreter has to read more bytes. But as for execution speed, it has no influence, because they are just ignored by the interpreter. So basically, it does not matter if you add comments.

Do comments slow down HTML?

Since html minification on dynamically generated pages isn’t that common, comments in html slow you down a bit, but they typically are so few that it doesn’t matter in practice either.

Why I should not commit commented out code?

Removing commented code not only makes it harder to find later, but it also makes it so people in the future don’t know it existed before. For finding the code, there are tools and git commands to help you look at the history of a file.

Does commented code affect performance in angular?

Every file is parsed only a single time, when it’s loaded. So it doesn’t make a difference whether the comment is inside or outside of the function, interpreter doesn’t see it.

Does whitespace slow down code?

The extra time you spend pressing the space bar is orders of magnitude more costly than the cost at run time (and neither matter at all). The much more significant cost will come from any any decreased readability that results from leaving out spaces, which can make code harder (for humans) to parse.

Do comments increase execution time?

No. Comments have no effect on execution. They will slow the compiler down a tiny bit – but even that should be imperceptible unless you have a ridiculous number of comments. The “effect” you’re noticing is more to do with the way you’re timing things – using System.

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Do comments take up memory?

When the compiler runs, extra stuff is removed, including comments. Even if you’re using an interpreted language, comments don’t use CPU cycles because they aren’t executable code, although they may add an extremely negligible amount of parsing time. The point is, don’t worry about it.

Does commented code affect performance C#?

4 Answers. No performance degradation at all. Comments are not parsed by the compiler, they are usually removed in the lexical analysis.

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