Javascript Pros and Cons
jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML It was released in January 2006 at BarCamp NYC by John Resig. Used by over 41% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use today
jQuery is free, open source software, dual-licensed under the MIT License and the GNU General Public License, Version 2.[4] jQuery’s syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications. jQuery also provides capabilities for developers to create plugins on top of the JavaScript library. Using these facilities, developers are able to create abstractions for low-level interaction and animation, advanced effects and high-level, theme-able widgets. This contributes to the creation of powerful and dynamic web pages.
Microsoft and Nokia have announced plans to bundle jQuery on their platforms,[5] Microsoft adopting it initially within Visual Studio[6] for use within Microsoft’s ASP.NET AJAX framework and ASP.NET MVC Framework while Nokia has integrated it into their Web Run-Time widget development platform.[7] jQuery has also been used in MediaWiki since version 1.16
Until the availability of Javascript libraries such as jQuery and Mootools adding animation and interactive features that don’t require reloading a web page were out of reach for many web designers/developers unless they used Flash.
This was largely due to Javascript implementations not being consistent in major browsers. Without using a Javascript library you need extensive knowledge about the inconsistencies between the browsers and extensive knowledge about Javascript in order to work around them.
jQuery and MooTools offer a library of routines that are cross browser compatible which greatly reduces the learning curve. These libraries also offer functions to handle many routine tasks making Javascript programming faster and easier to learn.
Pros
- Small size
- Using jQuery or other libraries reduces the learning curve
- Hundreds of free professional quality programs
- Can add interactivity to web page elements and tags
- Skinnable Form Components UI
- Compatible with more browsers than Flash including iPhone, cell phones, PS3, PSP
Cons
- Features not as extensive as Flash
- Complex features may not perform as quickly as flash
- 3D features are limited
- Users can disable Javascript support
- Source Code Not Protected
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