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

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168 CHAPTER 5 ■ ADD CONTROLS TO CREATE, EDIT, AND DELETE EVENTS private $_y; private $_daysInMonth; private $_startDay; public function __construct($dbo=NULL, $useDate=NULL) {...} public function buildCalendar() {...} public function displayEvent($id) {...} /** * Generates a form to edit or create events * * @return string the HTML markup for the editing form */ public function displayForm() { /* * Check if an ID was passed */ if ( isset($_POST['event_id']) ) { $id = (int) $_POST['event_id']; // Force integer type to sanitize data } else { $id = NULL; } /* * Instantiate the headline/submit button text */ $submit = "Create a New Event"; /* * If an ID is passed, loads the associated event */ if ( !empty($id) ) { $event = $this->_loadEventById($id); /* * If no object is returned, return NULL */ if ( !is_object($event) ) { return NULL; } $submit = "Edit This Event";
} /* * Build the markup */ return Event Description $event->description or cancel FORM_MARKUP; } } ?> private function _loadEventData($id=NULL) {...} private function _createEventObj() {...} private function _loadEventById($id) {...} Adding a Token to the Form If you look at the preceding form, there’s a hidden input named token that holds a session value, also called token. This is a security measure to prevent cross-site request forgeries (CSRF), which are form submissions that are faked by submitting a form to your app’s processing file from somewhere other than the form itself. This is a common tactic used by spammers to send multiple forged entry submissions, which is annoying, potentially harmful, and definitely undesirable. 169
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".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 $newobj
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Private Properties and Methods CHAP
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} public function __construct() { e
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*/ CHAPTER 3 ■ OBJECT-ORIENTED PR
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Ease of Implementation CHAPTER 3
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218 CHAPTER 6 ■ PASSWORD PROTECTI
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P A R T 3 ■ ■ ■ Combining jQu
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236 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.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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