Values &Variables

Values

• Number

  • Example	Descripttion
    32	Integer
    .0001, 0.0001,1e-4, 1.0e-4	Floating-Point Numbers
    0377	Octal Integer
    0x34FA, 0X56ce	hexadecimal integer

• Logical (Boolean) Value: true, false
• String : "This is a stirng", "The first line \n and \"second\" one"
• null, a special keyword denoting a null value

Special Characters in a String

\b  

\f  

\n  

\r  

\t  

\\  

Variables

• Variable name
  • Case-Sensitive.
  • Start with a letter or underscore ("_").
  • Subsequent characters can be letters, underscores, or digits (0-9).
• Variable Declaration
  • var x;
  • var x = 3;
  • x = 3;
• Global vs. Local Variables
  • All variables declared outside functions are global;
  • Variables declared in a function are local, i.e., valid only in the function.