Peachpit Press Visual QuickStart Guide jQuery
Welcome to the jQuery JavaScript library.
jQuery is an open-source JavaScript kit for
building Web applications so dynamic they
jump off the page. Filled with special controls
like calendars and tab folders, and special
effects like wipes and fade-ins, jQuery is gain-
ing popularity rapidly.
Perhaps most important, jQuery gives you
excellent support for Ajax applications. Ajax
is what allows you to access a Web server
from a browser without a page refresh—that
is, there’s no blinking, no flicker when you
download data behind the scenes with Ajax;
you just download the data and then you can
display it in a Web page using dynamic HTML
techniques. No fuss no muss—and the end
result is an application that looks more like a
desktop application than a Web application.
With Ajax, the user can do something in a
browser page, and the result of their action
appears instantly, updated immediately in
the browser window, without affecting the
other contents of the window.
to be used—which means that it’s prewrit-
ten JavaScript, ready for you to put to work in
your own Web pages. In this book, you get a
guided tour of what makes jQuery so popular.
jQuery specializes in letting you select ele-
ments in a page, and it does that better than
any other JavaScript library. You’ll see how
to create wrapped sets of elements in jQuery,
so you can handle multiple elements at the
same time. You’ll also see how to manipulate
wrapped sets of elements by changing their
appearance, style, visibility, text, and even
their HTML.
jQuery also comes packed with super-power -
ful 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’ll get a look at
the best ones in this book.
jQuery is known for its visual effects, which
include slick-looking wipes, in which a sheet
of color wipes over an element, and fades, in
which an element and its background fade
from view. In this book, you’ll see what you
can do with these kinds of effects.
You’ll also learn about the jQuery widgets,
which are popular controls that you can use
in your Web pages: calendars, accordion
controls (that let you open their pleats to see
additional pages of content), sliders, tabs,
and more. The jQuery widgets have a pol-
ished, professional look, and jQuery provides
them for just about every purpose you can
think of in Web pages.
Finally, of course, comes Ajax. This book
includes two chapters on Ajax: one to show
how to use basic skills, and one to get into truly
advanced territory. When you finish this book,
you’ll be an expert on using Ajax with jQuery.
That’s the game plan, then: to put jQuery to
work and see it at its most impressive.
jQuery is an open-source JavaScript kit for
building Web applications so dynamic they
jump off the page. Filled with special controls
like calendars and tab folders, and special
effects like wipes and fade-ins, jQuery is gain-
ing popularity rapidly.
Perhaps most important, jQuery gives you
excellent support for Ajax applications. Ajax
is what allows you to access a Web server
from a browser without a page refresh—that
is, there’s no blinking, no flicker when you
download data behind the scenes with Ajax;
you just download the data and then you can
display it in a Web page using dynamic HTML
techniques. No fuss no muss—and the end
result is an application that looks more like a
desktop application than a Web application.
With Ajax, the user can do something in a
browser page, and the result of their action
appears instantly, updated immediately in
the browser window, without affecting the
other contents of the window.
What’s in this Book
jQuery is a JavaScript library full of tools readyto be used—which means that it’s prewrit-
ten JavaScript, ready for you to put to work in
your own Web pages. In this book, you get a
guided tour of what makes jQuery so popular.
jQuery specializes in letting you select ele-
ments in a page, and it does that better than
any other JavaScript library. You’ll see how
to create wrapped sets of elements in jQuery,
so you can handle multiple elements at the
same time. You’ll also see how to manipulate
wrapped sets of elements by changing their
appearance, style, visibility, text, and even
their HTML.
jQuery also comes packed with super-power -
ful 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’ll get a look at
the best ones in this book.
jQuery is known for its visual effects, which
include slick-looking wipes, in which a sheet
of color wipes over an element, and fades, in
which an element and its background fade
from view. In this book, you’ll see what you
can do with these kinds of effects.
You’ll also learn about the jQuery widgets,
which are popular controls that you can use
in your Web pages: calendars, accordion
controls (that let you open their pleats to see
additional pages of content), sliders, tabs,
and more. The jQuery widgets have a pol-
ished, professional look, and jQuery provides
them for just about every purpose you can
think of in Web pages.
Finally, of course, comes Ajax. This book
includes two chapters on Ajax: one to show
how to use basic skills, and one to get into truly
advanced territory. When you finish this book,
you’ll be an expert on using Ajax with jQuery.
That’s the game plan, then: to put jQuery to
work and see it at its most impressive.
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