Introduction to jQuery


jQuery is a JavaScript library full of tools ready to be used – which means that it's pre-written JavaScript, ready for you to put to work in your own webpages. Here, you a get a guided tour of what makes jQuery so popular.

jQuery specializes in letting you select elements in a page, and it does that better than any JavaScript library. You will see how to create wrapped sets of elements in jQuery, so you can handle multiple elements at the same time. You will see how to manipulate wrapped set of elements by changing their appearance, style, visibility, text, and even their HTML.

jQuery also comes packed with super-powerful and cool utility functions, such as functions that let you determine which browser the user has and what its capabilities are. jQuery provides many utility functions and you will get a look at the best ones here.

jQuery is known for its visual effects which includes slike-looking wipes, in which a sheet of color wipes over an element and fades, in which an element and its background fades from view. Here you will see what you can do with these kinds of effects.

The jQuery library has taken the front-end development world by storm. Its dead-simple syntax makes once-complicated tasks downright trivial-enjoyable, even. Many a developer has been quickly seduced by its elegance and clarity. If you've started using the library, you're already adding rich, interactive experiences to your projects. Getting started is easy, but as is the case with many of the tools we use to develop websites, it can take months or even years to fully appreciate the breadth and depth of the jQuery library. The library is chock-full of features you might never have known to wish for. Once you know about them, they can dramatically change how you approach the problems you're called upon to solve.

The jQuery widgets, which are popular controls that you can use in your webpages like calendars, accordion controls (that let you open their pleats to see additional pages of contents), sliders, tabs, and many more. The jQuery widgets have a polished, professional looks and jQuery provides them for just about every purpose you can think of in any webpages.

Finally, of course, comes Ajax. jQuery's features are organized into a handful of simple categories: core functionality, selecting, manipulating, traversing, CSS, attributes, events, effects, Ajax, and utilities.

That's the game plan, then to put jQuery to work and see at its most impressive.


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