How do you add a single-line comment in JavaScript?

How do you add a single-line comment in JavaScript?

• 'This is a comment
• <!--This is a comment-->
• #This is a comment
• //This is a comment 

 

 

EXPLANATION

Single Line Comments

Single line comments start with //.
Any text between // and the end of the line will be ignored by JavaScript (will not be executed).
This example uses a single-line comment before each code line:

Example

// Change heading: document.getElementById("myH").innerHTML = "My First Page";

// Change paragraph: document.getElementById("myP").innerHTML = "My first paragraph.";