Countless number of times I have indicated in my lectures that without Javascript knowledge, you are not a web developer. Similar to HTML which doesn't has any replacement, JavaScript has also become "THE" choice for programmers across all technological platforms like J2EE, LAMP & .NET etc. To make the life of developers easy there are many JavaScript frameworks. To name a few: Prototype, Script.aculo.us, Dojo, QooxDoo (still remember the struggles that our team had @ merc with this) etc. Surely jQuery is not simply yet another JavaScript framework. jQuery fully satisfies its tagline "write less, do more" (thats what most of us want, right ?) . jQuery is distinct, powerful and cool with the following features: Open source Light weight (only ~68 kb) Extensibility through plug-ins (so you need not to be a Javascript pro to use it; can simply copy & paste the code... afterall "reusability" is the most important software enginnering princip...