Web Reference: 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. Comments are lines or blocks of text that are ignored by the JavaScript engine when your code is executed. They are there solely for the benefit of people reading the code, whether that's you or someone else. May 22, 2022 · An important sign of a good developer is comments: their presence and even their absence. Good comments allow us to maintain the code well, come back to it after a delay and use it more effectively.
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