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jQuery Essential Training
Illustration by Don Barnett

Exploring the jQuery UI widgets


From:

jQuery Essential Training

with Joe Marini

Video: Exploring the jQuery UI widgets

Let's dive in and take a look at some of the widgets that jQuery UI provides for us to use in our web applications. So, I am going to scroll down, and I'll start off by looking at the Accordion widget. Now, before I go into the demo for this particular widget, I want to point out how the demo pages are laid out here on jqueryui.com. So, right here in the middle is the widget that's being demonstrated, and then over here on the right-hand side there are various options you can set for that particular widget, under the Examples section.
Expand all | Collapse all
  1. 2m 52s
    1. Welcome
      1m 9s
    2. Using the exercise files
      1m 43s
  2. 17m 37s
    1. What is jQuery?
      5m 19s
    2. Downloading and installing jQuery
      2m 20s
    3. Creating a simple jQuery-enabled page
      7m 12s
    4. Overview of features in jQuery
      2m 46s
  3. 59m 57s
    1. Overview of selectors and filters
      2m 9s
    2. Using basic jQuery selectors
      9m 6s
    3. Using basic jQuery filters
      8m 35s
    4. Using jQuery attribute filters
      6m 7s
    5. Child, visibility, and content filters
      9m 59s
    6. Form selectors and filters
      9m 3s
    7. Traversing documents
      9m 1s
    8. Understanding jQuery statement chaining
      1m 42s
    9. Practical example 1: Annotating page links
      4m 15s
  4. 47m 16s
    1. Creating, getting, and setting content
      5m 53s
    2. Manipulating attributes
      5m 43s
    3. Inserting content
      4m 57s
    4. Wrapping, replacing, and removing content
      5m 27s
    5. Working with CSS
      6m 19s
    6. Associating data with page elements
      9m 30s
    7. Practical example 2: Automatic TOC generator
      9m 27s
  5. 33m 6s
    1. Understanding the jQuery event handling features
      2m 4s
    2. Binding and unbinding events
      6m 23s
    3. Convenient event helper methods
      4m 40s
    4. Using the jQuery event object
      6m 21s
    5. Using miscellaneous event features
      4m 38s
    6. Practical example 3: Table striping and highlighting
      9m 0s
  6. 28m 45s
    1. Hiding and showing elements
      5m 23s
    2. Fading elements in and out
      4m 2s
    3. Sliding elements
      4m 3s
    4. Creating custom animations
      5m 58s
    5. Practical example 4: Image rotator
      9m 19s
  7. 25m 30s
    1. Introduction to jQuery UI
      3m 40s
    2. Exploring the jQuery UI widgets
      5m 24s
    3. Exploring the jQuery UI effects
      3m 58s
    4. Using the jQuery UI ThemeRoller
      4m 11s
    5. Downloading and installing jQuery UI
      8m 17s
  8. 47m 49s
    1. Overview of the sample web site
      3m 50s
    2. Using the accordion widget
      9m 14s
    3. Creating an image rotator
      10m 22s
    4. Building hover tooltips
      7m 26s
    5. Making an image selector
      9m 30s
    6. Using the Resizable effect
      7m 27s
  9. 30m 2s
    1. Working with Asynchronous JavaScript and XML (AJAX)
      10m 8s
    2. Using AJAX helpers
      4m 34s
    3. Understanding AJAX data types
      10m 14s
    4. Using global AJAX event handlers
      5m 6s
  10. 20s
    1. Goodbye
      20s

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jQuery Essential Training
4h 53m Beginner Sep 01, 2009 Updated May 24, 2013

Viewers: in countries Watching now:

In jQuery Essential Training, Microsoft professional Joe Marini presents the power of the jQuery library, an open-source JavaScript project that greatly simplifies the process of adding advanced functionality to web sites. Joe teaches how to use these new features to build pages that work across browsers with the functionality that users (and clients) are looking for, from complex animation effects to dynamic page formatting. Joe pulls all of this together, showing how the jQuery UI plug-in can expand and streamline the capability of jQuery, and then integrating jQuery design tools into a complete sample web site. Exercise files accompany the course.

Topics include:
  • Constructing jQuery selectors and filters to gather information from web pages
  • Creating, inserting, and manipulating web page content
  • Understanding jQuery statement chaining
  • Building event handlers that work across browsers
  • Working with jQuery effects, such as showing, hiding, and fading page elements
  • Creating custom animations with specialized properties and options
  • Using the jQuery UI plug-in to give pages a polished look
Subjects:
Developer Web Web Design Web Development
Software:
jQuery
Author:
Joe Marini

Exploring the jQuery UI widgets

Let's dive in and take a look at some of the widgets that jQuery UI provides for us to use in our web applications. So, I am going to scroll down, and I'll start off by looking at the Accordion widget. Now, before I go into the demo for this particular widget, I want to point out how the demo pages are laid out here on jqueryui.com. So, right here in the middle is the widget that's being demonstrated, and then over here on the right-hand side there are various options you can set for that particular widget, under the Examples section.

If we scroll down a little bit more, you can see that there is a view source option, and if I click on view source, then the source code that was used to build this particular example right here is listed out. When you download jQuery UI, all of the source code for the demos comes down with the download anyway. So, you can either choose to use that sample code or you can copy and paste from here on the website. All right! Let me go ahead and close the view source. Last thing I want to point out is the API documentation. Each one of the widgets has a link to the API documentation for that widget.

So you can see here that this is the page that explains all the various things that the Accordion widget can do, explains in detail all the different options, how to call it with various different properties, and so on. All right! So let's scroll back up, and let's go back to the Demo. So, Accordion widgets, I'm sure you have seen these before, they are used to break up information into easily expandable sections, right? So, I click on each section and then it gets slowly revealed into place. But of course there are various options I can use. For example I can customize the icons.

I can have the Accordion widget open just by hovering instead of clicking, and so on, and so forth. We'll actually use the Accordion widget a little bit later when we build our real site. One of the things I want to point out really quickly though, is that to use many of these widgets is really pretty simple. Let's go down to the view source, and you can see here that just to use the Accordion widget, all you need to do is call the accordion function and pass in whatever parameters you want to use on the ID of the element that you want to be the accordion.

If we go down to the source code a little bit further, you'll see that here's the div with the ID of the accordion on it, and it follows some internal structure, right? These h3s provide the titles. These divs provide the content, and so on. But all you have to do is set up your content like you normally would anyway and then just call the accordion function and off it goes. So, next is the Autocomplete widget. Autocomplete allows me to have a text field. When I type certain letters, you can see that I'm getting a whole bunch of predefined options that have that letter in it.

So, let's check off the A and type a J instead. You can see that I'm getting programming languages that just have the letter J in them. And I can get more specific if I start doing things like this. And once again, the Autocomplete box has a whole bunch of different options over here on the right-hand side. I can have it show up as a Combo box. I can have various categories. So if I type a little a again, you can see that there is Categories in here that you can't select. A pretty rich set of functionality for an Autocomplete wwidget.

jQuery UI also provides buttons. Now here are the pretty standard simple buttons, but you can of course have things like checkboxes. Here they are, behaving like checkboxes. You can assign icons to your buttons. You can have them behave like Radio button. You can have a Split button, which has various different actions here. You can build toolbars out of buttons, pretty rich functionality. Than there is a Datepicker widget. I am sure you have seen these before. It allows you to choose a date. All right, pretty straightforward, you can have multiple dates.

Here is Display multiple months, right here. So you can imagine if you are checking into a hotel or choosing plane flights and so on, this would be very useful. You can even have them be localized. So if I choose Localization, you can see that here's the Calendar in French. We can also use various different writing formats. You know, here's one in a right-to-left languages, using Hebrew. Okay, let's move on. Here's the Dialog widget. I am sure you have seen dialogs before, nothing really earth shattering here. But there's a Basic dialog. There is Modal dialogs, and then you can have Modal messages and so on.

These are pretty useful in modern web apps. There is a new Menu element here in jQuery UI. Now they are still working on the Menu bar as of this recording, but this is the Menu element, and you can see, you can customize it with icons. Here is the Progressbar. Progressbar of course, we've all seen these before. You can have them with various labels and indeterminate value and so on. This is the Slider control, again very useful control. Here is one with multiple sliders, all right. Here's a Range slider.

You can see that this is pretty useful. You can imagine like you know choosing a range of hotel room prices you want to pay. Down here is the Spinner control. The spinner control is pretty straightforward. It just allows you to use these up and down arrows to quickly choose numbers. There is the Tabs control. Again, I'm sure we've all seen tabs before. And there's the Tooltip control. So that's a pretty brief recap of the widgets available in jQuery UI. So, let's move on to our next section.

Find answers to the most frequently asked questions about jQuery Essential Training.


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Q: When attempting to download jQuery, as the author does in the movie “Downloading and installing jQuery,” the file does not download. When any of the links on the download page are clicked, the browser opens a page of code instead.
A: This sometimes happens when a web browser doesn't have the proper MIME type to prompt the user to download the file instead of open it directly. Therefore, the browser is opening the code instead of downloading it. If this occurs, download the file on a by Control-clicking (Mac) or right-clicking (Windows) on the download link and choosing the Save File option, which will download it to the computer.
Q: Why do some of the examples use the form $("document") instead of just $(document)?
A: jQuery's $(document).ready() function will work with either form. As a reminder, you can also just use the $() shorthand to accomplish the same thing:
 
$(function() {
// code to run when the document is ready
});
Q: I am stuck on the first exercise in Chapter 1, video 3 "Creating a simple jQuery enabled page".

Your example javascript code, both in the movie and in the exercise files,
reads as follows:

<script type="text/javascript">
$("document").ready(function() {
alert("The page just loaded!");
});
</script>

This is not working for me.
A: After jQuery 1.3.2, a change was made where quotes were no
longer needed around the "document" argument to the jQuery $() function.

Type the following instead.

<script type="text/javascript">
$(document).ready(function() {
alert("The page just loaded!");
});
</script>
Q: How do I remove the resize handle that appears on on <textarea> elements in some browsers, such as Firefox and Chrome?
A: Some browsers automatically provide this feature for these text elements. You can disable this feature using CSS by providing a style rule for the element that specifies no resize behavior. Add the rule "resize: none;" to a stylesheet that is applied to the textarea, and the resize handle will not appear.

Q: This course was updated on 5/24/2013. What changed?

A: This update includes a new chapter on the jQuery AJAX features, new movies on associating data with page elements, and updates to the chapters on events and the jQuery UI plugin to reflect changes in JQuery 1.8.
Q: In Chapter 7, for the "Using the Resizable effect" movie, the example code from the Groundswell_Final and Groundswell_Start folders isn't limiting the width of the window. What should I do?
A: There's a bug in the example file. You need to add: 
textarea { resize:none;}

to the main.css file in the _css folder, and change the link tag in register.htm from:

<link href="../_css/sunny/jquery-ui-1.7.2.custom.css" rel="stylesheet" type="text/css" media="screen, projection" />

to

<link href="../_css/sunny/jquery-ui-1.10.2.custom.css" rel="stylesheet" type="text/css" media="screen, projection" />

 
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