8. java script

8. java script

• 1.
  IMRAN DAUD FOUNDATION UNIVERSITY INSTITUTEOF MANAGEMENT AND COMPUTER SCIENCES Imran Daud FUIMCS Web Engineering JavaScript
• 2.
   Java Scriptcan be used in following two different ways:  Within html code  In separate file (file.js)
• 3.
  Html Code andJavaScript
• 4.
  JavaScript file
• 5.
  Datatypes  Three Coredata types  Integer  String  Boolean  In addition to basic types we have  Null  undefined
• 6.
  String  String canbe handled in single or double quotes.  Example:
• 7.
  Declaring and initializingvariables
• 8.
  Dialog Boxes  Askquestion get answers and respond using window based messages dialog boxes.  Three methods  Alert()  alert(String)  Prompt()  prompt(text, value)  Confirm()  confirm(message)
• 9.
  Condition and loops If – else statement  Switch  Loops  for , while, do while
• 10.
  Functions
• 12.
  Function with argument
• 13.
  Associating Function withform field  Any functionality can be associated with any form field.  E.g. <input type="text" id="input" value="" onchange="err()"/>
• 14.
  Objects in Script
• 15.
  Associating Function withObject
• 16.
  Array and Date
• 17.
  Accessing Form Fields
• 18.
  Forms
• 21.
  Example
• 22.
  Example
• 23.
  Reference  JavaScript Byexample 2nd Edition by Ellie Quigley