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Файл:Ajax In Action (2006).pdf
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- •preface
- •acknowledgments
- •about this book
- •Who should read this book?
- •Roadmap
- •Code conventions
- •Code downloads
- •Author Online
- •About the title
- •About the cover illustration
- •Rethinking the web application
- •A new design for the Web
- •1.1 Why Ajax rich clients?
- •1.1.1 Comparing the user experiences
- •1.1.2 Network latency
- •1.1.3 Asynchronous interactions
- •1.1.4 Sovereign and transient usage patterns
- •1.1.5 Unlearning the Web
- •1.2 The four defining principles of Ajax
- •1.2.1 The browser hosts an application, not content
- •1.2.2 The server delivers data, not content
- •1.2.3 User interaction with the application can be fluid and continuous
- •1.2.4 This is real coding and requires discipline
- •1.3 Ajax rich clients in the real world
- •1.3.1 Surveying the field
- •1.3.2 Google Maps
- •1.4 Alternatives to Ajax
- •1.4.2 Java Web Start and related technologies
- •1.5 Summary
- •1.6 Resources
- •First steps with Ajax
- •2.1 The key elements of Ajax
- •2.2 Orchestrating the user experience with JavaScript
- •2.3 Defining look and feel using CSS
- •2.3.1 CSS selectors
- •2.3.2 CSS style properties
- •2.3.3 A simple CSS example
- •2.4 Organizing the view using the DOM
- •2.4.1 Working with the DOM using JavaScript
- •2.4.2 Finding a DOM node
- •2.4.3 Creating a DOM node
- •2.4.4 Adding styles to your document
- •2.4.5 A shortcut: Using the innerHTML property
- •2.5 Loading data asynchronously using XML technologies
- •2.5.1 IFrames
- •2.5.2 XmlDocument and XMLHttpRequest objects
- •2.5.3 Sending a request to the server
- •2.5.4 Using callback functions to monitor the request
- •2.5.5 The full lifecycle
- •2.6 What sets Ajax apart
- •2.7 Summary
- •2.8 Resources
- •Introducing order to Ajax
- •3.1 Order out of chaos
- •3.1.1 Patterns: creating a common vocabulary
- •3.1.2 Refactoring and Ajax
- •3.1.3 Keeping a sense of proportion
- •3.1.4 Refactoring in action
- •3.2 Some small refactoring case studies
- •3.2.2 Managing event handlers: Observer pattern
- •3.2.3 Reusing user action handlers: Command pattern
- •3.2.4 Keeping only one reference to a resource: Singleton pattern
- •3.3 Model-View-Controller
- •3.4 Web server MVC
- •3.4.1 The Ajax web server tier without patterns
- •3.4.2 Refactoring the domain model
- •3.4.3 Separating content from presentation
- •3.5 Third-party libraries and frameworks
- •3.5.2 Widgets and widget suites
- •3.5.3 Application frameworks
- •3.6 Summary
- •3.7 Resources
- •Core techniques
- •The page as an application
- •4.1 A different kind of MVC
- •4.1.1 Repeating the pattern at different scales
- •4.1.2 Applying MVC in the browser
- •4.2 The View in an Ajax application
- •4.2.1 Keeping the logic out of the View
- •4.2.2 Keeping the View out of the logic
- •4.3 The Controller in an Ajax application
- •4.3.1 Classic JavaScript event handlers
- •4.3.2 The W3C event model
- •4.3.3 Implementing a flexible event model in JavaScript
- •4.4 Models in an Ajax application
- •4.4.1 Using JavaScript to model the business domain
- •4.4.2 Interacting with the server
- •4.5 Generating the View from the Model
- •4.5.1 Reflecting on a JavaScript object
- •4.5.2 Dealing with arrays and objects
- •4.5.3 Adding a Controller
- •4.6 Summary
- •4.7 Resources
- •The role of the server
- •5.1 Working with the server side
- •5.2 Coding the server side
- •5.2.1 Popular implementation languages
- •5.3 The big picture: common server-side designs
- •5.3.1 Naive web server coding without a framework
- •5.3.2 Working with Model2 workflow frameworks
- •5.4 The details: exchanging data
- •5.4.2 Introducing the planet browser example
- •5.5 Writing to the server
- •5.5.1 Using HTML forms
- •5.5.2 Using the XMLHttpRequest object
- •5.5.3 Managing user updates effectively
- •5.6 Summary
- •5.7 Resources
- •Professional Ajax
- •The user experience
- •6.1 Getting it right: building a quality application
- •6.1.1 Responsiveness
- •6.1.2 Robustness
- •6.1.3 Consistency
- •6.1.4 Simplicity
- •6.1.5 Making it work
- •6.2 Keeping the user informed
- •6.2.1 Handling responses to our own requests
- •6.2.2 Handling updates from other users
- •6.3 Designing a notification system for Ajax
- •6.3.1 Modeling notifications
- •6.3.2 Defining user interface requirements
- •6.4 Implementing a notification framework
- •6.4.1 Rendering status bar icons
- •6.4.2 Rendering detailed notifications
- •6.4.3 Putting the pieces together
- •6.5 Using the framework with network requests
- •6.6 Indicating freshness of data
- •6.6.1 Defining a simple highlighting style
- •6.6.2 Highlighting with the Scriptaculous Effects library
- •6.7 Summary
- •6.8 Resources
- •Security and Ajax
- •7.1 JavaScript and browser security
- •7.1.1 Introducing the “server of origin” policy
- •7.1.2 Considerations for Ajax
- •7.1.3 Problems with subdomains
- •7.2 Communicating with remote services
- •7.2.1 Proxying remote services
- •7.2.2 Working with web services
- •7.3 Protecting confidential data
- •7.3.1 The man in the middle
- •7.3.2 Using secure HTTP
- •7.3.3 Encrypting data over plain HTTP using JavaScript
- •7.4 Policing access to Ajax data streams
- •7.4.1 Designing a secure web tier
- •7.4.2 Restricting access to web data
- •7.5 Summary
- •7.6 Resources
- •Performance
- •8.1 What is performance?
- •8.2 JavaScript execution speed
- •8.2.1 Timing your application the hard way
- •8.2.2 Using the Venkman profiler
- •8.2.3 Optimizing execution speed for Ajax
- •8.3 JavaScript memory footprint
- •8.3.1 Avoiding memory leaks
- •8.3.2 Special considerations for Ajax
- •8.4 Designing for performance
- •8.4.1 Measuring memory footprint
- •8.4.2 A simple example
- •8.5 Summary
- •8.6 Resources
- •Ajax by example
- •Dynamic double combo
- •9.1 A double-combo script
- •9.2 The client-side architecture
- •9.2.1 Designing the form
- •9.2.2 Designing the client/server interactions
- •9.3 Implementing the server: VB .NET
- •9.3.1 Defining the XML response format
- •9.4 Presenting the results
- •9.4.1 Navigating the XML document
- •9.4.2 Applying Cascading Style Sheets
- •9.5 Advanced issues
- •9.5.2 Moving from a double combo to a triple combo
- •9.6 Refactoring
- •9.6.1 New and improved net.ContentLoader
- •9.7 Summary
- •Type-ahead suggest
- •10.1 Examining type-ahead applications
- •10.1.2 Google Suggest
- •10.2.1 The server and the database
- •10.3 The client-side framework
- •10.3.1 The HTML
- •10.3.2 The JavaScript
- •10.3.3 Accessing the server
- •10.5 Refactoring
- •10.5.1 Day 1: developing the TextSuggest component game plan
- •10.5.3 Day 3: Ajax enabled
- •10.5.4 Day 4: handling events
- •10.5.6 Refactor debriefing
- •10.6 Summary
- •11.1 The evolving portal
- •11.1.1 The classic portal
- •11.1.2 The rich user interface portal
- •11.2 The Ajax portal architecture using Java
- •11.3 The Ajax login
- •11.3.1 The user table
- •11.4 Implementing DHTML windows
- •11.4.1 The portal windows database
- •11.4.3 Adding the JS external library
- •11.5 Adding Ajax autosave functionality
- •11.5.1 Adapting the library
- •11.5.2 Autosaving the information to the database
- •11.6 Refactoring
- •11.6.1 Defining the constructor
- •11.6.2 Adapting the AjaxWindows.js library
- •11.6.3 Specifying the portal commands
- •11.6.4 Performing the Ajax processing
- •11.6.5 Refactoring debrief
- •11.7 Summary
- •Live search using XSLT
- •12.1 Understanding the search techniques
- •12.1.1 Looking at the classic search
- •12.1.3 Examining a live search with Ajax and XSLT
- •12.1.4 Sending the results back to the client
- •12.2 The client-side code
- •12.2.1 Setting up the client
- •12.2.2 Initiating the process
- •12.3 The server-side code: PHP
- •12.3.1 Building the XML document
- •12.3.2 Building the XSLT document
- •12.4 Combining the XSLT and XML documents
- •12.4.1 Working with Microsoft Internet Explorer
- •12.4.2 Working with Mozilla
- •12.5 Completing the search
- •12.5.1 Applying a Cascading Style Sheet
- •12.5.2 Improving the search
- •12.5.3 Deciding to use XSLT
- •12.5.4 Overcoming the Ajax bookmark pitfall
- •12.6 Refactoring
- •12.6.1 An XSLTHelper
- •12.6.2 A live search component
- •12.6.3 Refactoring debriefing
- •12.7 Summary
- •Building stand-alone applications with Ajax
- •13.1 Reading information from the outside world
- •13.1.1 Discovering XML feeds
- •13.1.2 Examining the RSS structure
- •13.2 Creating the rich user interface
- •13.2.1 The process
- •13.2.3 Compliant CSS formatting
- •13.3 Loading the RSS feeds
- •13.3.1 Global scope
- •13.3.2 Ajax preloading functionality
- •13.4 Adding a rich transition effect
- •13.4.2 Implementing the fading transition
- •13.4.3 Integrating JavaScript timers
- •13.5 Additional functionality
- •13.5.1 Inserting additional feeds
- •13.5.2 Integrating the skipping and pausing functionality
- •13.6 Avoiding the project’s restrictions
- •13.6.1 Overcoming Mozilla’s security restriction
- •13.6.2 Changing the application scope
- •13.7 Refactoring
- •13.7.1 RSS reader Model
- •13.7.2 RSS reader view
- •13.7.3 RSS reader Controller
- •13.7.4 Refactoring debrief
- •13.8 Summary
- •The Ajax craftsperson’s toolkit
- •A.1 Working smarter with the right toolset
- •A.1.1 Acquiring tools that fit
- •A.1.2 Building your own tools
- •A.1.3 Maintaining your toolkit
- •A.2 Editors and IDEs
- •A.2.1 What to look for in a code editor
- •A.2.2 Current offerings
- •A.3 Debuggers
- •A.3.1 Why we use a debugger
- •A.3.2 JavaScript debuggers
- •A.3.3 HTTP debuggers
- •A.3.4 Building your own cross-browser output console
- •A.4 DOM inspectors
- •A.4.1 Using the Mozilla DOM Inspector
- •A.4.2 DOM inspectors for Internet Explorer
- •A.4.3 The Safari DOM Inspector for Mac OS X
- •A.5 Installing Firefox extensions
- •A.6 Resources
- •JavaScript for object-oriented programmers
- •B.1 JavaScript is not Java
- •B.2 Objects in JavaScript
- •B.2.1 Building ad hoc objects
- •B.2.2 Constructor functions, classes, and prototypes
- •B.2.3 Extending built-in classes
- •B.2.4 Inheritance of prototypes
- •B.2.5 Reflecting on JavaScript objects
- •B.2.6 Interfaces and duck typing
- •B.3 Methods and functions
- •B.3.1 Functions as first-class citizens
- •B.3.2 Attaching functions to objects
- •B.3.3 Borrowing functions from other objects
- •B.3.4 Ajax event handling and function contexts
- •B.3.5 Closures in JavaScript
- •B.4 Conclusions
- •B.5 Resources
- •Ajax frameworks and libraries
- •Accesskey Underlining Library
- •ActiveWidgets
- •Ajax JavaServer Faces Framework
- •Ajax JSP Tag Library
- •Ajax.NET
- •AjaxAC
- •AjaxAspects
- •AjaxCaller
- •AjaxFaces
- •BackBase
- •Behaviour
- •Bindows
- •BlueShoes
- •CakePHP
- •CL-Ajax
- •ComfortASP.NET
- •Coolest DHTML Calendar
- •Dojo
- •DWR (Direct Web Remoting)
- •Echo 2
- •FCKEditor
- •Flash JavaScript Integration Kit
- •Google AjaxSLT
- •Guise
- •HTMLHttpRequest
- •Interactive Website Framework
- •Jackbe
- •JPSpan
- •jsolait
- •JSON
- •JSRS (JavaScript Remote Scripting)
- •LibXMLHttpRequest
- •Mochikit
- •netWindows
- •Oddpost
- •OpenRico
- •Pragmatic Objects
- •Prototype
- •Qooxdoo
- •RSLite
- •Ruby on Rails
- •Sack
- •SAJAX
- •Sarissa
- •Scriptaculous
- •SWATO…
- •Tibet
- •TinyMCE
- •TrimPath Templates
- •Walter Zorn’s DHTML Libraries
- •WebORB for .NET
- •WebORB for Java
- •XAJAX
- •x-Desktop
- •XHConn
- •index
- •Symbols
- •Numerics
The user experience
This chapter covers
■Key features of usable code
■Common notification features
■A reusable framework for notifications
■Highlighting updated data in situ
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