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Unit II- Java Script, DOM JQuery (2).pptx

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Web Technology
Unit- II
Topic:
Java Script, DOM, JQuery, AngularJS
JavaScript:
● IntroductiontoJavaScript,
● JavaScriptinperspective,
● basicsyntax,
● variablesanddatatypes,
● statements,
● operators,
● literals,
● functions,
● objects,
● arrays,
● built inobjects,
● JavaScriptdebuggers
JS- Java Script
Java Script
Client Side
Scripting
Language
Dynamic front-end
scripting
language
JavaScript Advantages
Implementing form
validation
•Changing an image
on moving mouse over
it
•Content loading and
changing dynamically
• Sections of a page
appearing and
disappearing
• React to user actions,
• Performing complex
calculations
What Can JavaScript Do?
• Can validate form
data
• Can read and write
HTML elements
• Can access / modify
browser cookies
Can handle events
What Can JavaScript can’t Do?
• Can not close a window
that it hasn't opened.
•Cannot Protect Your
Page Source or Images
• Can not do database related
operation
Cannot Read From or Write
to Files in the Client.

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Unit II- Java Script, DOM JQuery (2).pptx