JavaScript Comments

JavaScript comments can be used to make the code more readable.

JavaScript Comments

Comments can be added to explain the JavaScript, or to make the code more readable.
Single line comments start with //.
The following example uses single line comments to explain the code:


Example




JavaScript Multi-Line Comments

Multi line comments start with /* and end with */.
The following example uses a multi line comment to explain the code:


Example




Using Comments to Prevent Execution

In the following example the comment is used to prevent the execution of a single code line (can be suitable for debugging):


Example




In the following example the comment is used to prevent the execution of a code block (can be suitable for debugging):


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Using Comments at the End of a Line

In the following example the comment is placed at the end of a code line:


Example