Multi-line Comments Multi-line comments start with /* and end with */. Any text between /* and */ will be ignored by JavaScript. This example uses a multi-line comment (a comment block) to explain the code:

Apr 3, 2019 · Just remove or put a "/" and the commented text will alternate from commented to uncommented and back again. It is necessary to carry that there can be no comments of the type /* …

Uses shutup.css by Steven Frank, with permission. Blocks comment sections on many popular websites.

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Nov 7, 2025 · An HTML comment is used to add explanatory notes to the markup or to prevent the browser from interpreting specific parts of the document. Comments start with the string <!-- and end …

May 5, 2020 · To create a multiline or block HTML comment, you still use the comment (<!-- -->) tags, but you can have more than one line in your comment. As long as you contain the comment text …

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Type /** to start a block comment, then hit the Enter key, and the extension will close the block. While inside the comment block, the extension will insert an asterisk at the start of every new line, and align …

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

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 …