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Java script

AshishSingh Bhatia
AshishSingh Bhatia

JavaScript was introduced in 1995 as LiveScript by Netscape and renamed JavaScript by Netscape Navigator 2. It is an interpreted, object-based programming language that is executed client-side in web browsers. JavaScript can be used to create interactive effects within web pages like validating forms or modifying elements. It has advantages like being embedded within HTML, having minimal syntax, and being easy to debug and test.

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JAVASCRIPT Prof. AshishSingh Bhatia
Brief History 2 December 4, 1995 Netscape and Sun introduced JavaScript 1.0, called LiveScript. Netscape Navigator 2 LiveScript JavaScript Microsoft joins in with IE 3 called it Jscript. Prof. Ashish Bhatia
What is JavaScript 3 Interpreted Language Object-Based Cross Platform Loosely Typed Multi Use Language Client Side interpreted. Prof. Ashish Bhatia
Advantage of JavaScript 4 An Interpreted Language Embedded within HTML Minimal Syntax Easy to learn Quick Development Design for Simple, Small Programs Performance Procedural Capabilities Designed for Programming User Events Prof. Ashish Bhatia
Advantage of JavaScript 5 Easy Debugging and Testing Platform Independence / Architectural Neutral Prof. Ashish Bhatia
How to add JS in HTML 6 <script language=javascript> Java Script Code </script> Prof. Ashish Bhatia
Data Type 7 4 primitive data types Number Integer, Floating Number, NaN Boolean True and false [ 1 and 0 ]** String Null A null , empty or nonexistent reference Complex Types like array and objects Prof. Ashish Bhatia
Creating Variables and Array 8 var <variable name> = value; arrayName = new Array(); arrayName = new Array(length); Index starts with 0 join() and reverse() length Prof. Ashish Bhatia
Variable Name 9 Can Begin with A to Z a to z _ $ Case Sensitive variableName Prof. Ashish Bhatia
Operator 10 Arithmetic Operator + , - , * , / , % , ++ , -- Logical Operator &&, || , ! Comparison Operator == , === , != , !== , < , > , <= , >= Assignment Operator = , += , -= , *= , /= , %= Prof. Ashish Bhatia
Ternary Operator 11 Condition ? Value 1 : value 2 Special Operator delete : Delete property of an object or an element at an array index new : Create an instance of an Object type void : Does not return a value. Prof. Ashish Bhatia
Programming Constructs 12 Assignment x = x+y; Data declaration var x = 5; If Switch While For Do while Label LabelName: Statement Prof. Ashish Bhatia
Programming Constructs 13 break continue function call x = abs(y); return with with(Math){ } delete delete a[5] Method Invocation document.write(Hello); Prof. Ashish Bhatia
Functions in JavaScript 14 Built-in Function eval() paresInt(), parseFloat() User Defined Function function function_name(parameter1, parameter2..) { block of JavaScript Code } Prof. Ashish Bhatia
Dialog Boxes 15 Alert Used to display a small textual output with ok button. Prompt Displays a predefined message Displays a text box and accepts user input Display ok and cancel button Ok text from text box is passed to the program environment Cancel passes NULL value to the program environment. Prof. Ashish Bhatia
Dialog Boxes 16 Confirm Predefinedmessage OK and Cancel button OK passes TRUE to the program Cancel passes FALSE to the program Prof. Ashish Bhatia
Example of Alert 17 Prof. Ashish Bhatia
Example of Alert 18 Prof. Ashish Bhatia
Example of Alert 19 Prof. Ashish Bhatia
Youtube channel 20 http://www.youtube.com/profashish Prof. Ashish Bhatia
際際滷share 21 http://www.slideshare.net/ashishsinghbhatia Prof. Ashish Bhatia

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Java script

  • 2. Brief History 2 December 4, 1995 Netscape and Sun introduced JavaScript 1.0, called LiveScript. Netscape Navigator 2 LiveScript JavaScript Microsoft joins in with IE 3 called it Jscript. Prof. Ashish Bhatia
  • 3. What is JavaScript 3 Interpreted Language Object-Based Cross Platform Loosely Typed Multi Use Language Client Side interpreted. Prof. Ashish Bhatia
  • 4. Advantage of JavaScript 4 An Interpreted Language Embedded within HTML Minimal Syntax Easy to learn Quick Development Design for Simple, Small Programs Performance Procedural Capabilities Designed for Programming User Events Prof. Ashish Bhatia
  • 5. Advantage of JavaScript 5 Easy Debugging and Testing Platform Independence / Architectural Neutral Prof. Ashish Bhatia
  • 6. How to add JS in HTML 6 <script language=javascript> Java Script Code </script> Prof. Ashish Bhatia
  • 7. Data Type 7 4 primitive data types Number Integer, Floating Number, NaN Boolean True and false [ 1 and 0 ]** String Null A null , empty or nonexistent reference Complex Types like array and objects Prof. Ashish Bhatia
  • 8. Creating Variables and Array 8 var <variable name> = value; arrayName = new Array(); arrayName = new Array(length); Index starts with 0 join() and reverse() length Prof. Ashish Bhatia
  • 9. Variable Name 9 Can Begin with A to Z a to z _ $ Case Sensitive variableName Prof. Ashish Bhatia
  • 10. Operator 10 Arithmetic Operator + , - , * , / , % , ++ , -- Logical Operator &&, || , ! Comparison Operator == , === , != , !== , < , > , <= , >= Assignment Operator = , += , -= , *= , /= , %= Prof. Ashish Bhatia
  • 11. Ternary Operator 11 Condition ? Value 1 : value 2 Special Operator delete : Delete property of an object or an element at an array index new : Create an instance of an Object type void : Does not return a value. Prof. Ashish Bhatia
  • 12. Programming Constructs 12 Assignment x = x+y; Data declaration var x = 5; If Switch While For Do while Label LabelName: Statement Prof. Ashish Bhatia
  • 13. Programming Constructs 13 break continue function call x = abs(y); return with with(Math){ } delete delete a[5] Method Invocation document.write(Hello); Prof. Ashish Bhatia
  • 14. Functions in JavaScript 14 Built-in Function eval() paresInt(), parseFloat() User Defined Function function function_name(parameter1, parameter2..) { block of JavaScript Code } Prof. Ashish Bhatia
  • 15. Dialog Boxes 15 Alert Used to display a small textual output with ok button. Prompt Displays a predefined message Displays a text box and accepts user input Display ok and cancel button Ok text from text box is passed to the program environment Cancel passes NULL value to the program environment. Prof. Ashish Bhatia
  • 16. Dialog Boxes 16 Confirm Predefinedmessage OK and Cancel button OK passes TRUE to the program Cancel passes FALSE to the program Prof. Ashish Bhatia
  • 17. Example of Alert 17 Prof. Ashish Bhatia
  • 18. Example of Alert 18 Prof. Ashish Bhatia
  • 19. Example of Alert 19 Prof. Ashish Bhatia
  • 20. Youtube channel 20 http://www.youtube.com/profashish Prof. Ashish Bhatia
  • 21. 際際滷share 21 http://www.slideshare.net/ashishsinghbhatia Prof. Ashish Bhatia