JavaScript Comments

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JavaScript Comments

Comments :   

multiple lines of code temporally you want to close it, that time you can use it.
If you are working n a team one of them had written a complex code, to understand other also n a team that time also use comment

Comments are two types

  • Single line comments
  • Multi line comments

Single line comments are starts with //

Example:

<!DOCTYPE html>
<html>
<body>  
<h1> Single-line comments </h1>
<p id="demo"></p>
<script>
let x=5;   //declare x, it gve value of 5
let y=x+7; //declare y, it gve value of x+7
let z=x+y;
Document.getElementById("demo").innerHTML =z;
</script>
</body>
</html>

Multi line comments are starts /* statement ends with /
/ the below code will change the heading and the paragraph with itallic*/

 <!DOCTYPE html>
<html>
<head>
<title> Multi-line comments </title>
</head>
<body>
<h1 id ="Heading"></h1>
<i><p id="Pitalc"></p></i>
<script>
Document.getElementById("Heading").innerHTML ="JAVASCRIPT multi-line comments";
Document.getElementById("Pitalc").innerHTML ="JAVASCRIPT multi-line comments";
</script>
</body>
</html>