What is jQuery and How To Start Using jQuery?

What is jQuery?

• Java script library for adding a dynamic content on web site.
• Runs within web browser like (IE,Firefox,Chrome etc.)
• Open source, free to use.
• Handle 99% of Cross browser issue.
• Runs from any web server.

What’s the Query in jQuery?

• Database Query? NOT!
• Document Object Model (DOM)

  • This is a structure of HTML document withing web browser.
  • Jquery queries the DOM in order to manipulate it.
  • Even with the same HTML document the various browser create differently structured DOMs.
  • The jQuery   handles these differently automatically.

Main features of jQuery

• On-the -fly  manipulation of the web page
    ? Change the content when hovering on mouse.
    ? Filtering the content  by using checkboxes.

• User Interface (UI) components (jQuery UI)
    ? Dialog Boxes.
    ? Date Picker.

• jQuery plugins
    ? Table Sorter
    ? Form Validator
    

Installation of jQuery on to server

• Download jQuery
• Save file to your web server.

 

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jQuery Syntax

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