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

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34 CHAPTER 2 ■ COMMON JQUERY ACTIONS AND METHODS [ form # ] Finally, to select a range of parents until a selector is matched, similar to .nextUntil() or .prevUntil(), use .parentsUntil(): $(":checkbox").parentsUntil("form"); This returns all parent elements until the form element is encountered: >>> $(":checkbox").parentsUntil("form"); [ label, fieldset ] .add() The .add() method is versatile and, therefore, a bit more complicated. Essentially, it allows you to add additional elements to the existing jQuery object using a selector or a string of HTML. To select all paragraphs and then add the span with class foo to the object, use the following: $("p").add("span.foo"); This outputs the following: >>> $("p").add("span.foo"); [ p, p.foo, p, p#bar, span.foo ] The .add() method also allows you to create elements on the fly, like so: $("p").add('This is a new span'); Executing the preceding code will output this: >>> $("p").add('This is a new span'); [ p, p.foo, p, p#bar, span#bat ] ■ Note Notice that the element span#bat is faded in the console output. This happens because, while the element exists in the jQuery object, it has not been appended to the DOM and, therefore, does not display on the page. You'll learn how to add new elements to the DOM in the next section, “Creating and Inserting DOM Elements.”
.andSelf() CHAPTER 2 ■ COMMON JQUERY ACTIONS AND METHODS If you’re using a traversal method, you may want to keep the original matched set of elements as well. The .andSelf() method provides this ability by allowing the original set to be recalled and appended to the new set. For instance, to match all paragraph elements and then find child spans, use the following code: $("p").find("span"); This returns the spans in the document, but you’ve lost the paragraphs: >>> $("p").find("span"); [ span, span.foo ] To keep the paragraphs and match the spans, add a call to .andSelf() to the end of the code: $("p").find("span").andSelf(); This results in the desired output: >>> $("p").find("span").andSelf(); [ p, p.foo, p, span, p#bar, span.foo ] .contents() The .contents() method works similarly to the .children() method, except .contents() returns text nodes as well, which are simply the character data contained within an element (the actual text displayed by an element). 1 To find all contents of the span with class foo, use the following: $("span.foo").contents(); This results in the following output: >>> $("span.foo").contents(); [ ] 1 http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-1312295772 35
Page 1: THE EXPERT’S VOICE ® IN OPEN SOU
Page 4 and 5: ii Pro PHP and jQuery Copyright ©
Page 6 and 7: iv Contents at a Glance ■About th
Page 8 and 9: vi ■ CONTENTS Understanding jQuer
Page 10 and 11: viii ■ CONTENTS Summary .........
Page 12 and 13: x ■ CONTENTS ■Chapter 9: Perfor
Page 14 and 15: xii About the Author ■ Jason Leng
Page 16 and 17: xiv Acknowledgments I feel like I s
Page 19 and 20: C H A P T E R 1 ■ ■ ■ Introdu
Page 21 and 22: CHAPTER 1 ■ INTRODUCING JQUERY Th
Page 23 and 24: SETTING UP A LOCAL TESTING ENVIRONM
Page 25 and 26: google.load("jquery", "1.4.2");
Page 27 and 28: Basic Selectors CHAPTER 1 ■ INTRO
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Page 33 and 34: $("p:odd"); [ p.foo, p#bar ] Select
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Page 37 and 38: which returns the following in the
Page 39: Selecting Only Enabled or Disabled
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84 CHAPTER 2 ■ COMMON JQUERY ACTI
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C H A P T E R 3 ■ ■ ■ Object-
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$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 $_startDay; public function
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138 CHAPTER 4 ■ BUILD AN EVENTS C
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168 CHAPTER 5 ■ ADD CONTROLS TO C
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200 CHAPTER 6 ■ PASSWORD PROTECTI
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P A R T 3 ■ ■ ■ Combining jQu
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236 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.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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