JAVA Scripts Intoduction Tutorial videos for Beginner

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JavaScript Introduction Tutorial Videos for
Beginner by
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Highlights

• JavaScript Definition
• Variables and Operators
• Control Flow Statements
• Dialog boxes

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JavaScript Definition

• Uses in web development.
• Interpreted and script oriented language.
• Developed by Netscape.
• Easier and faster to code than C and C.
•  Client side scripting language.

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Variables and operators

• variables are containers for storing data values.
• Storing a value in a variable is known
  as variable initialization.
• Can store values in variable at creation or
  whenever variable is required.
• var keyword is uses for variable declaration and
  initialization
• Can store a value of any data type.
• Global Variables and Local Variables.

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Variables and operators

• Operator is a character that represents an
  action.
• JavaScript operator types are as follows

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Variables and operators

• Arithmetic operators perform actions on numerical
  values return a single numerical value. The
  standard arithmetic operators are , -, , and /.
• Comparison operators are uses to compare two
  numerical values. JavaScript Comparison operators
  are  , !, gt, lt, gt , lt
• Logical operators are used to determine the logic
  between variables or values. And (), or(),
  not (!) are JS logical operators.
• Assignment operators assign values to JavaScript
  variables.
• conditional operator that assigns a value to a
  variable based on some condition.

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Control Flow Statements

• Dictate how code runs under different conditions
  or until a condition is met.
• Control Flow Structures allow your code to take
  certain actions based on a variety of scenarios.
•  if else, switch case, for, while and do while
  are JavaScript control flow statements.
• Control structure contains additional statement
  which would be executed under some specified
  conditions.

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Dialog boxes

• Dialog boxes are use to raise and alert, or to
  get confirmation.
• Alert box, Confirmation box, Prompt box are
  dialog box types.
• Alert dialog box is mostly used to give a warning
  message to the users.
• Confirmation dialog box is mostly used to take
  user's consent on any option.
• Prompt dialog box is very useful when you want to
  pop-up a text box to get user input. 

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