Comments

javaScript Comments are use to make our code more readale and easy to understand. Comments are not display on the browser,they are only Define our souce code in a different sections.

Single Line Comments

We can write single line comments in javaScript with //.

If you keep any code after // that code will not display on the browser.

Example:

// change myHeading
 document.getElementById("heading").innerHTML="CodesFamily";

 //Change heading Text Color
 document.getElementById("heading").style.color="red";

Example:

var a=10; // Declare a variable a;
 var b=20;  // Declare a variable a;

 varc=a+b // Sum of two variables

Multi Line Comments

In javaScript Multiline Comments starts with /* and end with */ always.

If you keep your code between /* code */ that code will not be execyued.

Example:

/* This is my code and I want to 
change my heading and it's c color.*/

 document.getElementById("heading").innerHTML="CodesFamily";
 document.getElementById("heading").style.color="red";