O&D

• Types of JS Operators

  • Arithmetic Operator
  • Assignment Operator
  • Comparison Operator
  • String Operator
  • Logical Operator
  • Bitwise Operator
  • Ternary Operator
  • Type Operator
• Arithmetic Operators


  Used to perform arithmetic on numbers
• Operator Precedence


  Describes the order in which operations are performed in an arithmetic expression
• Operator Precedence


  • Parentheses
  • Multiplication
  • Division
  • Addition
  • Subtraction
• Assignment Operators


  Assign values to JavaScript variables
• Comparison Operators


  Used in logical statements to determine equality or difference between variables or values
• Data Types


  Different types of data
• Value


  A piece of information that can be a Number, String, Boolean, Null
• Data Types


  • String
  • Numbers
  • Boolean
  • null
  • undefined
  • Objects

  
• String


  A series of characters enclosed in quotation marks
• Numbers


  Any numeric value, can be positive or negative
• Boolean


  A logical true or false, used to evaluate whether a condition is true or false
• Null


  A special keyword denoting a null value (i.e. 0 (zero) or nothing)
• Undefined


  A variable without a value, has the value undefined. The type is also undefined.
• Object


  Everything in JavaScript acts like an object aside from null and undefined

  
• Array


  A special variable, which can hold more than one value
• Date


  Date objects are created with the new Date() constructor. It is used to access the browser's current date and time.
• Create a JavaScript program to display the current time using a button

  Explore!
• +

  Addition
• -

  Subtraction
• *

  Multiplication
• **

  Exponentiation
• /

  Division
• %

  Modulus
• ++

  Increment
• --

  Decrement
• ==


  equal to
• ===


  equal value and equal type
• !=


  not equal
• !==


  not equal value or not equal type
• >


  greater than
• <


  less than
• >=


  greater than or equal to
• <=


  less than or equal too