Pro JavaScript Design Patterns 2008 phần 6 pps

Pro JavaScript Design Patterns 2008 phần 6 pps

Pro JavaScript Design Patterns 2008 phần 6 pps

... a collection of poorly designed APIs by wrapping them in a single well-designed API. JavaScript Libraries As Facades JavaScript libraries are built for humans. They’re designed to save time, ... of setCSS: function setCSS(el, styles) { for ( var prop in styles ) { if (!styles.hasOwnProperty(prop)) continue; setStyle(el, prop, styles[prop]); } } CHAPTER 10 ■ THE FACADE PATTERN 145 908Xch10...
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Pro JavaScript Design Patterns 2008 phần 2 pps

Pro JavaScript Design Patterns 2008 phần 2 pps

... tools in the object-oriented JavaScript programmer’s toolbox. The first principle of reusable object-oriented design mentioned in the Gang of Four’s Design Patterns says “Program to an interface, ... you start implementing complex systems using design patterns. It might seem like interfaces reduce JavaScript s flexibility, but they actually improve it by allow- ing your objects t...
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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 ... this.bicycle.getPrice() + 6. 00; }; BellDecorator.prototype.ringBell = function() { return 'Bell rung.'; }; CHAPTER 12 ■ THE DECORATOR PATTERN 167 908Xch12.qxd 11/15/07 11:02 AM Pag...
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Pro JavaScript Design Patterns 2008 phần 9 pps

Pro JavaScript Design Patterns 2008 phần 9 pps

... creation of very modular and decoupled user interfaces. CHAPTER 16 ■ THE COMMAND PATTERN2 26 908Xch 16. qxd 11/ 16/ 07 10:31 AM Page 2 26 Creating Commands with Closures There is another way to create ... implements ReversibleCommand this.cursor = cursor; }; CHAPTER 16 ■ THE COMMAND PATTERN2 36 908Xch 16. qxd 11/ 16/ 07 10:31 AM Page 2 36 Example: Animation Animation is a great starting...
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Pro JavaScript Design Patterns 2008 phần 1 docx

Pro JavaScript Design Patterns 2008 phần 1 docx

... PM Page xiii f 767 0b088a34e6aa65a 568 5727db1ff4 Pro JavaScript ™ Design Patterns Copyright © 2008 by Ross Harmes and Dustin Diaz All rights reserved. No part of this work may be reproduced or transmitted ... 1 ■ EXPRESSIVE JAVASCRIPT 7 908Xch01.qxd 11/15/07 10:31 AM Page 7 Pro JavaScript ™ Design Patterns Ross Harmes and Dustin Diaz 908Xch00FM.qxd 11/ 16/ 07 1:05 PM Page...
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Pro JavaScript Design Patterns 2008 phần 3 docx

Pro JavaScript Design Patterns 2008 phần 3 docx

... */ function findProduct(id) { } CHAPTER 5 ■ THE SINGLETON PATTERN 66 908Xch05.qxd 11/15/07 10: 36 AM Page 66 more than one superclass; you cannot do that in JavaScript because the prototype attribute can ... Later in your page, another programmer adds var resetProduct = $('reset-product-button'); var findProduct = $('find-product-button'); // The findProduct fun...
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Pro JavaScript Design Patterns 2008 phần 4 pptx

Pro JavaScript Design Patterns 2008 phần 4 pptx

... our interface. Function.prototype.method = function(name, fn) { this.prototype[name] = fn; return this; }; CHAPTER 6 ■ CHAINING 86 7257ch06a.qxd 11/15/07 10:37 AM Page 86 the method or attribute ... common features that JavaScript libraries offer, and take it from there. The fundamentals that you will find in nearly all JavaScript libraries are shown in Table 6- 1. Table 6- 1. The C...
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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 PATTERN1 26 908Xch09.qxd 11/ 16/ 07 10:30 AM Page 1 26 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 ... 14 ■ THE PROXY PATTERN2 06 908Xch14.qxd 11/15/07 11:05 AM Page 2 06 The Proxy Pattern vs. the Decorator Pattern A proxy is similar to a decorator in many ways. Both decorators and virt...
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Pro JavaScript Design Patterns 2008 phần 10 pptx

Pro JavaScript Design Patterns 2008 phần 10 pptx

... methods, 34, 110 programming styles, 3 protection proxies, 200 prototypal inheritance, 41, 45–49 vs. classical, 49 edit-in-place field using, 55–58 use of, 62 prototype attribute, 46 48 prototype chaining, ... 66 basic structure of, 65 66 benefits of, 81 branching, 78–81 drawbacks of, 82 introduction to, 65 lazy loading, 75–78, 82 namespacing, 66 68 with private members, 70–75 uses...
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