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100 CHAPTER 3 ■ OBJECT-ORIENTED PROGRAMMING } } // Create a new object $newobj = new MyOtherClass; // Output the object as a string echo $newobj->newMethod(); // Use a method from the parent class echo $newobj->getProperty(); ?> Upon reloading the test file in your browser, the following is output: The class "MyClass" was initiated! From a new method in MyOtherClass. I'm a class property! The class "MyClass" was destroyed. Overwriting Inherited Properties and Methods To change the behavior of an existing property or method in the new class, you can simply overwrite it by declaring it again in the new class:
} } return $this->getProperty(); public function setProperty($newval) { $this->prop1 = $newval; } public function getProperty() { return $this->prop1 . ""; } class MyOtherClass extends MyClass { public function __construct() { echo "A new constructor in " . __CLASS__ . "."; } } public function newMethod() { echo "From a new method in " . __CLASS__ . "."; } // Create a new object $newobj = new MyOtherClass; // Output the object as a string echo $newobj->newMethod(); // Use a method from the parent class echo $newobj->getProperty(); ?> This changes the output in the browser to: A new constructor in MyOtherClass. From a new method in MyOtherClass. I'm a class property! The class "MyClass" was destroyed. CHAPTER 3 ■ OBJECT-ORIENTED PROGRAMMING 101
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".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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Page 105 and 106: $obj = new MyClass; var_dump($obj);
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Page 129 and 130: Ease of Implementation CHAPTER 3
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Page 139 and 140: # # DocumentRoot: The directory out
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Page 143 and 144: } ?> } } } CHAPTER 4 ■ BUILD AN E
Page 145 and 146: ■ Note For the sake of brevity, D
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Page 149 and 150: } ?> } include_once $filename; CHAP
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150 CHAPTER 4 ■ BUILD AN EVENTS C
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168 CHAPTER 5 ■ ADD CONTROLS TO C
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200 CHAPTER 6 ■ PASSWORD PROTECTI
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P A R T 3 ■ ■ ■ Combining jQu
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236 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.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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