Pro JavaScript Design Patterns 2008 phần 9 pps

Pro JavaScript Design Patterns 2008 phần 9 pps

Pro JavaScript Design Patterns 2008 phần 9 pps

... instantiate. Benefits of the Proxy Pattern Each type of proxy has a different set of benefits. The remote proxy allows you to treat a remote resource as a local JavaScript object. This is obviously ... in the middle of the range: CHAPTER 16 ■ THE COMMAND PATTERN 2 29 908Xch16.qxd 11/16/07 10:31 AM Page 2 29 Both of these types of proxies can be incredibly useful in the right circumstance...
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Pro JavaScript Design Patterns 2008 phần 2 pps

Pro JavaScript Design Patterns 2008 phần 2 pps

... object-oriented design mentioned in the Gang of Four’s Design Patterns says “Program to an interface, not an implementation,” telling you how funda- mental this concept is. The problem is that JavaScript ... useful. In a large project, with many different programmers writing code, interfaces are essential. Often programmers are asked to use an API that hasn’t been written yet, or are...
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Pro JavaScript Design Patterns 2008 phần 6 pps

Pro JavaScript Design Patterns 2008 phần 6 pps

... setCSS(el, styles) { for ( var prop in styles ) { if (!styles.hasOwnProperty(prop)) continue; setStyle(el, prop, styles[prop]); } } CHAPTER 10 ■ THE FACADE PATTERN 145 90 8Xch10.qxd 11/15/07 10:57 ... apply to your composites. For example, it is CHAPTER 9 ■ THE COMPOSITE PATTERN 1 39 908Xch 09. qxd 11/16/07 10:30 AM Page 1 39 CompositeForm.prototype.remove = function(child) { for(var i =...
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Pro JavaScript Design Patterns 2008 phần 7 ppsx

Pro JavaScript Design Patterns 2008 phần 7 ppsx

... browsers implement the console object: /* SimpleProfiler class. */ var SimpleProfiler = function(component) { this.component = component; }; SimpleProfiler.prototype = { buildList: function() { var ... new SimpleProfiler(list); // Wrap the object in the decorator. list.buildList(); // Creates the list and displays "buildList: 298 ms". CHAPTER 12 ■ THE DECORATOR PATTERN174 90 8Xch12...
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Pro JavaScript Design Patterns 2008 phần 1 docx

Pro JavaScript Design Patterns 2008 phần 1 docx

... publisher. ISBN-13 (pbk): 97 8-1- 590 59- 908-2 ISBN-10 (pbk): 1- 590 59- 908-X ISBN-13 (electronic): 97 8-1-4302-0 495 -4 ISBN-10 (electronic): 1-4302-0 495 -8 Printed and bound in the United States of America 9 8 7 6 5 ... . . . . . . . 197 How Does the Proxy Control Access to Its Real Subject? . . . . . . . 197 Virtual Proxy, Remote Proxy, and Protection Proxy. . . . . . . . . . . ....
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Pro JavaScript Design Patterns 2008 phần 3 docx

Pro JavaScript Design Patterns 2008 phần 3 docx

... INHERITANCE52 90 8Xch04a.qxd 11/15/07 10:34 AM Page 52 // Later in your page, another programmer adds var resetProduct = $('reset-product-button'); var findProduct = $('find-product-button'); ... new Author('Dustin Diaz', [&apos ;JavaScript Design Patterns& apos;]); author[1] = new Author('Ross Harmes', [&apos ;JavaScript Design Patterns& apos...
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Pro JavaScript Design Patterns 2008 phần 4 pptx

Pro JavaScript Design Patterns 2008 phần 4 pptx

... possible. It is one of the most useful patterns in JavaScript and has its place in almost every project, no matter how large or small. In quick and simple projects, a singleton can be used simply ... _$(arguments); }; })(); CHAPTER 6 ■ CHAINING 85 7257ch06a.qxd 11/15/07 10:37 AM Page 85 Design Patterns PART 2 ■ ■ ■ 7257ch07.qxd 11/15/07 10:38 AM Page 91 displayResult: function(respo...
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Pro JavaScript Design Patterns 2008 phần 5 potx

Pro JavaScript Design Patterns 2008 phần 5 potx

... bicycle; }; /* GeneralProductsBicycleShop class. */ var GeneralProductsBicycleShop = function() {}; extend(GeneralProductsBicycleShop, BicycleShop); GeneralProductsBicycleShop.prototype.createBicycle ... code produced will be more modular and more maintainable. CHAPTER 9 ■ THE COMPOSITE PATTERN126 90 8Xch 09. qxd 11/16/07 10:30 AM Page 126 extend(OfflineHandler, SimpleHandler); OfflineHa...
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Pro JavaScript Design Patterns 2008 phần 8 doc

Pro JavaScript Design Patterns 2008 phần 8 doc

... Protection Proxy The virtual proxy is probably the most useful type of proxy to JavaScript programmers. Let’s briefly go over the other types and explain why they aren’t as applicable to JavaScript. A ... function(searchString) { this._initializeLibrary(); CHAPTER 14 ■ THE PROXY PATTERN 199 90 8Xch14.qxd 11/15/07 11:05 AM Page 199 if(!this.initialized) { return; } return this.directory....
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Pro JavaScript Design Patterns 2008 phần 10 pptx

Pro JavaScript Design Patterns 2008 phần 10 pptx

... 1 69 172 creating, for flyweight pattern, 193 drawbacks of, 108 example, 99 –104 instantiation using, 181 RSS reader (example), 104–107 simple, 93 96 true, 96 98 uses of, 99 fieldsets, 128 findProduct ... 251 90 8Xch17.qxd 11/15/07 11:08 AM Page 251 deliver method, 2 19 dependencies, hard-coded, 2 49 dequeue, 114 design patterns. See patterns DHTML, 144–145 dialog boxes, flywe...
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