Web Reference: May 29, 2021 · In most editors, a line of code can be commented out by pressing the Ctrl + / hotkey for a single-line comment and something like Ctrl + Shift + / – for multiline comments (select a piece of code and press the hotkey). Javascript does something called "semicolon insertion" which means you can actually write code that omits the semicolon in certain places, and they'll basically be added for you when the code is parsed. Mar 8, 2025 · The semicolon is important in many programming languages for the compiler to understand the code, as it denotes the end of a statement. However, in JavaScript, adding a semicolon at the end of every line is not always necessary.
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