jQuery: -
jQuery is a JavaScript cross-browser library which is developed by John Resig. jQuery provides abstractions for common client-side tasks such as DOM traversal, DOM manipulation, event handling, animation and Ajax e.t.c. with an easy-to-use API that works across a multitude of browsers. jQuery has changed the way that millions of people write JavaScript.
jQuery features:-
- DOM element selections by using the multi-browser open source selector engine Sizzle, a spin-off of the jQuery project
- Events
- Effects and animations
- Ajax
- DOM traversal and modification (including support for CSS 1–3)
- JSON parsing (for older browsers)
- Extensibility through plug-ins
- Utilities - such as user agent information, feature detection
- Compatibility methods that are natively available in modern browsers but need fall backs for
- Multi-browser (not to be confused with cross-browser) support.
- DOM manipulation based on CSS selectors that uses node element names and attributes (e.g. ID and class) as criteria to build selectors
