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JS: Data types and Operators

Chapter:4 Data types:
                  1. Numbers
                  2. Strings

 Note: When adding a number and a string, JavaScript will treat the number as a string.
         JavaScript evaluate expressions from left to right. Different sequences can produce different results.

 Ex: var x=16+"Volvo";
Outpt: 16Volvo

 Numbers: JavaScript has only one type of numbers. Numbers can be written with or without decimals.

 Strings: Strings are written with quotes. You can use single or double quotes.

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Chapter:5 Operators: Add two numbers and add two statements
                    1. Arithmetic Operators
                    2. Assignment Operators
                    3. String Operators
                    4. Comparison Operators
                    5. Logical Operators

 Arithmetic Operators: +   Addition
                                   -    Subtraction
                                   *    Multiplication
                                   **  Exponentiation
                                   /    Division
                                  %   Modulus
                                  ++  Increment
                                  --    Decrement
Assignment Operators: =             x=y
                                      +=           x=x+y
                                      -=            x=x-y
                                      *=            x=x*y
                                      /=            x=x/y
                                    %=            x=x%y

 String Operators: The + and += operators can also be used to add strings.
Comparision Operators: ==     Equal to
                                       ===   Equal value and equal type
                                       !=      not equal
                                       !==    not equal value or not equal type
                                       >       greater than
                                       <       less than
                                       >=     greater than or equal
                                       <=     less than or equal
                                       ?       ternary operator
Logical Operators:  &&    logical and
                                ||      logical or
                                !       logical not

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