Pro PHP and jQuery by Jason Lengstorf.pdf - Computer Science ...

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262 CHAPTER 7 ■ ENHANCING THE USER INTERFACE WITH JQUERY }; }, // Adds the window to the markup and fades it in "boxin" : function(data, modal) { // Code omitted for brevity }, // Fades out the window and removes it from the DOM "boxout" : function(event) { // If an event was triggered by the element // that called this function, prevents the // default action from firing if ( event!=undefined ) { event.preventDefault(); } } // Removes the active class from all links $("a").removeClass("active"); // Fades out the modal window and overlay, // then removes both from the DOM entirely $(".modal-window,.modal-overlay") .fadeOut("slow", function() { $(this).remove(); } ); After making this change, reload http://localhost/ and click an event title. The modal window and overlay will fade in, and clicking either the Close button or the overlay will cause the modal window and overlay to fade out. Summary In this chapter, you learned how to load event data dynamically with jQuery using the progressive enhancement technique. You also learned about event handling, basic effects, and even a little bit about regular expressions. In the next chapter, you’ll continue to add AJAX functionality by making the editing controls work via AJAX, as well.
C H A P T E R 8 ■ ■ ■ Editing the Calendar with AJAX and jQuery Now that your app can display event data without a page refresh, you can see the added convenience provided by AJAX in web applications. Historically, one of the biggest pitfalls of using web apps has been the fact that each action, no matter how small, usually required waiting for the page to refresh while the setting was saved. Web apps were convenient when a user needed access to his information on a shared computer, but the slow workflow was usually enough to make users lean toward desktop applications whenever possible. However, with mainstream acceptance and use of AJAX, users can now make changes rapidly without constantly waiting for a page to reload. This makes web apps feel more like desktop apps, which also makes them much more appealing to users. In this chapter, you’ll learn to add scripts that make the editing controls for administrators function smoothly without requiring a page refresh for each action. The only action that will require a page refresh is the login, since that requires changes to the session. ■ Note Before starting the exercises in this chapter, please log in to the calendar application. The default login relies on a username of testuser and a password of admin. Opening the Event Creation Form To start, you’ll modify the script to let administrators add new events without a page refresh. Open init.js and select the button to add new events by its class (admin). Add a click event handler that prevents the default action and (for now) logs a message to confirm it fired properly: jQuery(function($){ var processFile = "assets/inc/ajax.inc.php", fx = { "initModal" : function() {...}, "boxin" : function(data, modal) {...}, "boxout" : function(event) {...} } $("li>a").live("click", function(event){...}); 263
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".foo+p"); CHAPTER 1 ■ INTRODUC
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$("p:odd"); [ p.foo, p#bar ] Select
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$("p:parent"); [ p, p.foo, p, p#bar
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which returns the following in the
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Selecting Only Enabled or Disabled
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26 CHAPTER 2 ■ COMMON JQUERY ACTI
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C H A P T E R 3 ■ ■ ■ Object-
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$obj = new MyClass; var_dump($obj);
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CHAPTER 3 ■ OBJECT-ORIENTED PROGR
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$obj = new MyClass; // Get the valu
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} public function setProperty($newv
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} } return $this->getProperty(); pu
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Create a new object $newobj = new M
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} } // Create a new object $newobj
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Private Properties and Methods CHAP
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} public function __construct() { e
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*/ CHAPTER 3 ■ OBJECT-ORIENTED PR
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Ease of Implementation CHAPTER 3
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C H A P T E R 4 ■ ■ ■ Build a
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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# # DocumentRoot: The directory out
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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} ?> } } } CHAPTER 4 ■ BUILD AN E
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■ Note For the sake of brevity, D
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} ?> CHAPTER 4 ■ BUILD AN EVENTS
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} ?> } include_once $filename; CHAP
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private $_startDay; public function
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138 CHAPTER 4 ■ BUILD AN EVENTS C
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168 CHAPTER 5 ■ ADD CONTROLS TO C
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200 CHAPTER 6 ■ PASSWORD PROTECTI
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Page 249: P A R T 3 ■ ■ ■ Combining jQu
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Page 325: P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.validDate = function(date, option
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Modifying the Initialization Script
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Adding Methods to jQuery CHAPTER 10
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over, then returns it to its origin
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CHAPTER 10■ EXTENDING JQUERY ■
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Defines default values for the plug
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}); // Loads the event data from th
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■ ■ ■ Index ■ Special Chara
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■ C Calendar app JavaScript initi
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saving new calendar events in addin
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:eq( ) method, 17, 20, 26-27 equals
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eginning of string, 324 character c
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asic selectors in by class name, 12
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.die( ) method, 75-76 .error( ) met
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.parents( ) method, 33 .parentsUnti
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overview, 328 regex pattern to vali
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