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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Document Your Code With Comments

MICHAEL P
MICHAEL P
5,191 Points

In order to have proper syntax in JavaScript, when commenting do you always begin line with // ?

In order to have proper syntax in JavaScript, when commenting do you always begin line with // ?

Like, I know that // is not the only way to comment in JavaScript, since you can also have / /

but when you type the // for commenting in JavaScript, do you need to always include // at the beginning of the line?

It seems that JavaScript is slightly less strict as far as syntax. That is why I was wondering. Thanks

4 Answers

Chris Adamson
Chris Adamson
132,143 Points

It doesn't have to strictly be at the beginning of the line, you could have it come after functional code as well:

i = 1; // comment

/ / wouldn't be a comment in Javascript, the two backslashes have to be together to start a comment.

Chris Adamson
Chris Adamson
132,143 Points

If your troubleshooting your code, using the

/*

*/

style of comments can be convenient to comment out large sections of code to find bugs.

Another way you can comment is by adding /* at the beginning and close it off with */ This is an option if you're writing a longer comment.

/*
Everything inside will be considered
a comment and you can have as many lines needed
and then you close it off with an asterisk and forward slash
*/