Sending Results to the Client
As I just showed in Example 16-5, the server will take care of creating the XHTML to send to the client so that the hints will appear to the user as quickly as possible. This is accomplished by taking the responseText of the server's response and immediately setting it to the innerHTML of the lt div gt element before making the lt div gt element visible. Each hint result that is passed to the client must be capable of submitting the search form to the server. An onclick event should be set for...
Puzzle Games
Puzzle games are a popular genre for the browser, and they are implemented mostly with the Shockwave or Flash plug-in. You can find puzzle games on web sites such as Shockwave , ezone.com , MSN Games playmode 0 amp genre 1 , and Yahoo Games http games.yahoo.com puzzle -games , to name a few. These games would be even more desirable if they did not require a plug-in to play. It is only a matter of time before Ajax puzzle games appear more frequently on the Web. They are a good genre of game for...
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Using GdrawOptions.setSearchFormRootfl - powered bv The Google ajiax Search API Thfr Motrin, on IMDli. Movies, fV, Celebs, grid ition amp , dJLvi d .icl lt e_i-5jc-qe.t5 _o_f david icke - secrets of Ajax Search API Video Search Contro http rnalTl xsyntb. b logsiiot. cofin 'Index, html When applications use the GSearch objects in standalone form, rather than under the control of the GSearchControl object, they will often need to capture and process user-generated search requests. The GSearchForm...
Info Xwt
jQuery was developed as a means of creating better JavaScript syntax to use CSS selectors than any existing library in 2005. Created by John Resig and now maintained and developed by the jQuery team composed of community volunteers , jQuery has a syntax similar to the Prototype Framework. The current version of jQuery is 1.1.4. You can find more information about jQuery at http jquery.com . You can make Ajax calls with jQuery in several ways, thanks to several functions available for specific...
Is innerHTML Evil
The innerHTML property has caused much debate since Microsoft introduced it for Internet Explorer all those years ago. There are usually only two camps on this issue those that support it wholeheartedly and those that believe it is evil. So, the question that needs to be answered is Is innerHTML evil First, a little bit about innerHTML. innerHTML allows a developer to create a string of XHTML and set the innerHTML property equal to that string. The browser is then tasked with translating all of...
Info Hpk
The Weblogs.com ping service is used to automatically inform VeriSign whenever you update content on your site. The service receives notification a ping from your site that you have added new content, and if all goes well, Weblogs.com adds your site to a list of recently changed weblogs. http msdn2.microsoft.com en -us library bb259721.aspx The Windows Live Custom Domains SDK, version 1.2, enables developers to programmatically manage their Windows Live Custom Domains user base by means of a...
Index Fsj
SYMBOL A B C D E F G H I J K L M N O P Q R S T U V W X Y Z handle to the image animation object Hansson, David Heinemeier hasAttribute method hasChildNodes method head component of a web page header elements, ordering of heap sorts High Performance JavaScript Vector Graphics Library hints to the user on search topics search submitted from hints Holovaty, Adrian HousingMaps.com HTML frames, deprecated HTML 5 draft specification produced by ASP.NET reformulation of HTML 4.01 as XML REST and...
Prototype
The Prototype Framework, which you can find at http www.prototypejs.org , is a JavaScript framework that is used to develop foundation code and to build new functionality on top of it. Sam Stephenson developed and maintains it. Prototype is a standalone framework, though it is part of Ruby on Rails and is found in Rails' source tree. According to the September 2006 Ajaxian survey, Prototype is the most popular of all the Ajax frameworks. Prototype is a set of foundation classes and utilities,...
Info Ftl
Make sure that the confirmation data that we wish to send to the server is 'confirmedData' .value '001 - Bad confirmation received from user.' new Aj ax.Request 'saveConfirm.php', method 'post', parameters 'data ' F 'confirmData' , onSuccess function xhrResponse Do something here Send the error message to the user fillPopUp 'There was an internal error with the application lt br gt ' xhrResponse.statusText Close the confirmation window after the Ajax request has gone out closeConfirm return...
Chapter Designing Ajax Interfaces
At this point, we have examined the basics of what it takes to create Ajax web applications the standards that are used, the design patterns to follow, the server-side languages available, the frameworks, and the Document Object Model DOM methods and properties used to fetch data and manipulate the DOM. However, we have not discussed how to design the interface to your application. Just as important as the tools that go into building an application are the components that make up the user...
Xslt Rjl
As I stated earlier, XSLT relies on XPath in a big way, using it to search the document to extract parts of the DOM tree during a transformation, forming conditional expressions, building sequences, and so forth. XSLT makes good sense in Ajax web development, as it can transform XML data sent from the server into something the client can recognize. Again, an easy solution for this task is using Sarissa. The simplest way to use Sarissa is to load the XSL file, create an XLSTProcessor object, and...
Mapping Services
One of the hottest topics for application development is in the realm of web mapping. This subject, more commonly referred to as Geographic Information Systems GIS within the industry, has some promising applications. This is especially true when used in a mashup with other available data sets. Most people are visual by nature as such, using maps to help convey a stat or fact adds good value to an application. For example, is it easier to get a list of addresses for restaurants in a district of...
General Layout
The main idea to take away from this chapter concerns an application's general layout. It is best to provide navigation for the site's main areas in several places throughout a single application page. For this reason, keeping the layout consistent is important so that the user does not become confused or impatient when he does not find what he expected. Break longer pieces of content into smaller chunks these smaller chunks of data are easier to browse on the Web. Try to be as conscious of...
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As with all of the other navigation aids we've looked at so far, the ideal way to build a tree is to use an XHTML list. This ensures that we have a degree of backward compatibility with browsers that can't or don't support JavaScript or CSS. The list for our tree looks like this lt ul id navTree gt lt li gt data lt ul gt lt ul gt lt li gt lt li gt colors.css lt li gt lt li gt fonts.css lt li gt lt li gt structure.css lt li gt lt ul gt lt li gt lt li gt print.css lt li gt lt li gt screen.css lt...
B AutoCompletion
The script.aculo.us Autocompleter controls allow for Google Suggest-like local and server-powered auto-completing text input fields. These two methods for auto-completion come from the following classes The Ajax.Autocompleter class allows for server-powered auto-completion of text fields. The syntax for this class is Code View new Aj ax. Autocompleter lt id of text field gt , lt id of DIV element to populate gt , URL, options Table B-1 gives a list of available options for this class the...
Ajax Table Pagination
Ajax table pagination also follows the same principles as Ajax paged navigation namely, give the client only as much data as it needs to create one page of the table. As the pages are requested, the table builds up more lt tbody gt elements until an Ajax request is no longer needed and the straight JavaScript method can take over. Example 8-8. The turnDataPage function modified for Ajax This function, turnDataPage, acts on whatever table p tableld is passed, which is the beginning of making...
Rich Internet Applications
Rich Internet Applications RIAs are Ajax web applications. They function like traditional desktop applications by changing the browser from a thin to a fat client, through the use of JavaScript. A truly robust RIA usually incorporates the MVC design pattern into its model for stability and reliability, as shown in Figure 2-6. Figure 2-6. An RIA implementation on top of MVC Figure 2-6. An RIA implementation on top of MVC
Nonrelational Database Models
There are other types of database models besides relational databases. They include Flat file databases are simply plain-text files that contain records generally one record per line , which separate fields with a fixed width, whitespace, or some special character. There are no structural relationships in the flat file data model, and a flat file database consists of a separate file for every table of data. Implementations of this model include comma-separated value CSV files, dBASE, and...