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

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244 CHAPTER 7 ■ ENHANCING THE USER INTERFACE WITH JQUERY }); }); var data = $(this) .attr("href") .replace(/.+?\?(.*)$/, "$1"); // Logs the query string console.log( data ); The first function to be stored in fx will be called initModal, and it will check whether a modal window already exists. If it does, the function will select it; otherwise, it will create a new one and append it to the body tag. To see if an element already exists, use the length property after executing the jQuery function with a selector for that element. If the length property returns 0, the element does not currently exist in the document object model (DOM). Perform the check and return a modal window by inserting the following bold code into fx inside init.js: // Functions to manipulate the modal window var fx = { }; // Checks for a modal window and returns it, or // else creates a new one and returns that "initModal" : function() { // If no elements are matched, the length // property will return 0 if ( $(".modal-window").length==0 ) { // Creates a div, adds a class, and // appends it to the body tag return $("") .addClass("modal-window") .appendTo("body"); } else { // Returns the modal window if one // already exists in the DOM return $(".modal-window"); } }
Calling the Utility Function from the Event Handler CHAPTER 7 ■ ENHANCING THE USER INTERFACE WITH JQUERY Next, modify the click event handler to load the result of fx.initModal into a variable for use in the script by adding the following bold code in init.js: // Pulls up events in a modal window $("li>a").live("click", function(event){ }); // Stops the link from loading view.php event.preventDefault(); // Adds an "active" class to the link $(this).addClass("active"); // Gets the query string from the link href var data = $(this) .attr("href") .replace(/.+?\?(.*)$/, "$1"), // Checks if the modal window exists and // selects it, or creates a new one modal = fx.initModal(); ■ Note The semicolon after the data variable has been replaced with a comma in this example. Save, then reload http://localhost/ and click one of the event titles to cause a modal window to appear on the screen (see Figure 7-1). 245
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".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 $_startDay; public function
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138 CHAPTER 4 ■ BUILD AN EVENTS C
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168 CHAPTER 5 ■ ADD CONTROLS TO C
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Page 249: P A R T 3 ■ ■ ■ Combining jQu
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294 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.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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