Javascript slider examples

JavaScript is a scripting language for the web. Microsoft refers to their implementation of it as "JScript" but in terms of syntax it's pretty much the same.

jQuery is JavaScript. It is a JavaScript library, so it operates on top of JavaScript. It cannot exist on its own, so you can't use one over the other. You can use just JavaScript or JavaScript and jQuery.

In other words, jQuery is a software library, written in JavaScript, whose intention is to help JavaScript developers when writing code that is to be run in a web page.

jQuery is designed to make many JavaScript development tasks much easier. Use jQuery when it will significantly reduce your development time, and you can afford the extra overhead of downloading the library.

Personally my reasons of using jQuery/JavaSccript libraries are:

Complex element selection
Animation
Event handling
crossbrowser support
easy element selection
customizable plugins
large support community
very popular

jQuery runs in JavaScript, and is written in JavaScript. JavaScript (including jQuery) can be used to add interactivity to a web page beyond that which is possible merely with HTML and CSS. This allows for a more "application-like" experience for the user. If you are writing JavaScript for a web page, it is often a good idea to also use a library (or framework) like jQuery to make the task of browser-compatibility that much easier. It is like a pre-packaged set of JavaScript routines that you may have otherwise needed to write yourself, packaged in an easy-to-use way.

Some would argue that it is large, which could affect your web performance... and they would be right. However, because of its popularity, it is likely to have already been used on some site you've visited before. Most browsers these days are good about caching scripts/images, so that download hit is reduced over time. A drawback of using jQuery is that it is a relatively large file size, which does matter on the web. Some would argue that if you are not using enough of jQuery to justify its file size on your site, you should consider something else (such as a more modular framework, or not using a library/framework at all).

And many still see JavaScripts as a bad idea to make a web page which depends on JavaScript, and won't run without it, and insist that JavaScript should only enhance the user experience. However, websites which won't work without JavaScript do exist and are becoming more common.

Here is a list of jQuery libraries that I believe will make your web page 100% better:

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