Comments and Statements
--double slash is used for single line comment
Comments and Statements
--/*  */ is used for multiple comments
Variables
--JavaScript is weekly typed language
--Variable name is case sensitive
--variable name must be start with letter or underscore
--variable may contains letter
--variable must not contain whitespace or special characters
--varible must not start with digits

Signed-off-by: hasanmbstu13 <hasanmbstu13@gmail.com>