<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> JavaScript Single Line Comments </title> </head> <body> <script> var a=10; //Declare a, give it the value of 10 var b=20; // Declare b, give it the value of 20 var c=a+b;//It adds values of a and b variable document.write(c);//prints sum of 10 and 20 </script> <p><strong>Note:</strong> The comments are not executed.</p> </body> </html>
