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

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342 CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS Figure 9-24. An entry that will fail to validate If you click the Submit button at this point, the validation will fail, and the app will show an alert box with the error message about the date format (see Figure 9-25).
Figure 9-25. The error message in an alert box after failing validation CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS After clicking the OK button in the alert box, the user will be able to edit her entry without having to repopulate any fields. Summary In this chapter, you tackled using regular expressions for form validation. The concepts you learned can be applied to validating any type of data, and they will greatly aid you in making sure the information supplied in forms is usable by your applications. In the next chapter, you’ll learn how to extend the jQuery object, both by directly extending the jQuery core and by developing a custom plugin for jQuery. 343
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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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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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Page 325: P A R T 4 ■ ■ ■ Advancing jQu
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Page 361 and 362: C H A P T E R 10 ■ ■ ■ Extend
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Page 365 and 366: Modifying the Initialization Script
Page 367 and 368: Adding Methods to jQuery CHAPTER 10
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Page 371 and 372: CHAPTER 10■ EXTENDING JQUERY ■
Page 373 and 374: Defines default values for the plug
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Page 377 and 378: ■ ■ ■ Index ■ Special Chara
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