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326 CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS Putting It All Together Now that you’ve got a general understanding of regular expressions, it’s time to use your new knowledge to write a regex pattern that will match any occurrence of the phrases regular expression or regex, including the plural forms. To start, look for the phrase regex: /(regex)/i (see Figure 9-10). Figure 9-10. Matching the word regex Next, add the ability for the phrase to be plural by inserting an optional es at the end: /(regex(es)?)/i (see Figure 9-11). Figure 9-11. Adding the optional match for the plural form of regex Next, you will add to the pattern so that it also matches the word regular with a space after it; you will also make the match optional: /(reg(ular\s)?ex(es)?)/i (see Figure 9-12).
Figure 9-12. Adding an optional check for the word regular CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS Now expand the pattern to match the word expression as an alternative to es: /(reg(ular\s)?ex(pression|es)?)/i (see Figure 9-13). Figure 9-13. Adding alternation to match expression Finally, add an optional s to the end of the match for expression: /(reg(ular\s)?ex(pressions?|es)?)/i (see Figure 9-14). 327
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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 367 and 368: Adding Methods to jQuery CHAPTER 10
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Page 371 and 372: CHAPTER 10■ EXTENDING JQUERY ■
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Page 377 and 378: ■ ■ ■ Index ■ Special Chara
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overview, 328 regex pattern to vali
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