Block comments are often used for formal documentation. Using comments to prevent execution of code is suitable for code testing. Adding // in front of a code line changes the code lines from an …

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 …

Write clear, purposeful JavaScript comments to explain logic, disable code, and document functions. Use // for single lines and /* */ for blocks.

Jul 11, 2025 · We can use // or /*...*/ to change the JavaScript code execution using comments. JavaScript Comments are used to prevent code execution and are considered suitable for testing …

When testing your own code, adding two forward slashes // in front of code lines will convert the code to a comment, rather than an executable line. To prevent the execution of multiple lines, a comment …

Feb 22, 2023 · Press Shift + Alt + A (Windows) or Shift + Option + A (macOS) to add a block comment (use your mouse to select that block). If a block of code is commented out, you can uncomment it …

The comment block is formatted as a JSDoc comment, commonly used for documenting functions, parameters, and return values in JavaScript. This format can be parsed by documentation …

Multi-line comments, widely known as block comments, start with /* and end with */. If you know CSS, then you're already familiar with block-level comments. JavaScript will ignore any text between the …

In JavaScript, you create a multiline comment by using /* to start the comment and */ to end it. Everything between these markers won't be treated as code by the computer, no matter how many …

Learn all about JavaScript comments, including single-line and multi-line comments, with examples and best practices for effective coding.