J query


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J query

  1. 1.  A JavaScript library that simplifies client- side scripts of HTML  A lightweight, "write less, do more", JavaScript library. – w3schools  Open Source JavaScript Library
  2. 2.  Written in JavaScript, and comes in the form of a single .js file, compiled within are a lot of JavaScript codes that are commonly used by programmers  Takes common tasks that use many lines of JavaScript code, and wraps them into methods that can be called by a line of code.
  3. 3. Of all scripts, jQuery is also used by companies like:  Google  Microsoft  IBM  Netflix
  4. 4.  Comes in two forms: › Uncompressed .js file – easy to read and modify. (160kb) › Minified .js file – comments and other unnecessary characters are removed to a smaller size(23kb). More commonly used since it is smaller and is accessed much easier than the uncompressed form.
  5. 5.  As it contains advanced page manipulation functions, it is simple to understand  It can create very impressive animations and interactions  Accomplish more with less codes  JQuery aims to ease common problems by providing a lightweight library that adds many advanced and cross-browser functions to the standard language.
  6. 6.  Using direct JavaScript can cause issues related to browser incompatibilities. Those issues have made many JavaScript applications difficult to code, resulting in high maintenance costs.  A modern Web application wouldn't be complete without some AJAX functionality. JQuery provides functions for sending HTTP GET and POST requests, and it can work easily with the JavaScript Object Notation (JSON) format.
  7. 7.  jQuery makes it easy to write JavaScript apps and create animated effects that rival that of Flash movies.  jQuery is also credited for: › Adding animated effects to elements. › Making XML (Ajax) requests. These use JavaScript to request additional data from the Web server without having to reload the page. › Manipulating the DOM (Document Object Model). Easily add, remove, and reorder content in the Web page using just a few lines of code.
  8. 8. › Creating image slideshows. › Making drop-down menus. WITH ANIMATIONS! › Creating drag-and-drop interfaces. › Adding power to forms. With jQuery you can easily add complex client-side form validation, create auto-complete Ajax text fields that pull data from a server-side database, and so on.
  9. 9.  A text-based open standard designed for human-readable data interchange. It is derived from the JavaScript scripting language for representing simple data structures and associative arrays, called objects. Despite its relationship to JavaScript, it is language-independent, with parsers available for many languages.
  10. 10.  http://en.wikipedia.org/wiki/JQuery  http://learn.jquery.com/about- jquery/how-jquery-works/  http://www.webhostdesignpost.com/we bsite/whatisjqueryandwhy.html  http://www.elated.com/articles/what-is- jquery/  http://en.wikipedia.org/wiki/JSON