Apress pro javascript design patterns

... Subject? 197 Virtual Proxy, Remote Proxy, and Protection Proxy 200 The Proxy Pattern vs the Decorator Pattern 201 When Should the Proxy Be Used? ... website, http://jsdesignpatterns.com, and at the Apress website, http://www.apress.com Contacting the Authors You can contact the authors at dustin@jsdesignpatterns.com and ross@jsdesignpatterns.com ... very creative in how design patterns...

Ngày tải lên: 27/06/2014, 12:20

... ross@jsdesignpatterns.com 908Xch 01. qxd 11 /15 /07 10 : 31 AM PART Page 1 ■■■ Object-Oriented JavaScript 908Xch 01. qxd 11 /15 /07 10 : 31 AM CHAPTER Page ■■■ Expressive JavaScript J avaScript is one of the ... specifically to JavaScript 908Xch 01. qxd 10 11 /15 /07 10 : 31 AM Page 10 CHAPTER ■ EXPRESSIVE JAVASCRIPT The fact that JavaScript is so expressive allows you...

Ngày tải lên: 12/08/2014, 23:20

... resultsArray.length; i < len; i++) { var listItem = document.createElement('li'); 21 908Xch02a.qxd 22 11/15/07 10: 32 AM Page 22 CHAPTER ■ INTERFACES listItem.innerHTML = resultsArray[i]; resultsList.appendChild(listItem); ... interfaces: 908Xch02a.qxd 11/15/07 10: 32 AM Page 21 CHAPTER ■ INTERFACES Include the Interface class in your HTML file The Interface.js file is available at the...

Ngày tải lên: 12/08/2014, 23:20

... author = []; author[0] = new Author('Dustin Diaz', [ 'JavaScript Design Patterns' ]); author[1] = new Author('Ross Harmes', [ 'JavaScript Design Patterns' ]); author[1].getName(); author[1].getBooks(); ... original JavaScript creators The prototype attribute is meant to point to the prototype object, and through prototype 908Xch04a.qxd 11/15/07 10 :34 AM Page 49 CHAPTER ■ INHERITANC...

Ngày tải lên: 12/08/2014, 23:20

... 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 ... the most fundamental patterns in JavaScript Not only is it useful by itself, as we have seen in this chapter, but it can be used in some form or another with most of the patterns in this...

Ngày tải lên: 12/08/2014, 23:20

... this.requestInProgress = false; this.retryDelay = 5; // In seconds }; extend(QueuedHandler, SimpleHandler); QueuedHandler.prototype.request = function(method, url, callback, postVars, 101 7 257 ch07.qxd ... this.conf.updateInterval * 1000); } }; 7 257 ch07.qxd 11/ 15/ 07 10:38 AM Page 107 CHAPTER ■ THE FACTORY PATTERN The feedProxy.php script used in the XHR request is a proxy that allows fe...

Ngày tải lên: 12/08/2014, 23:20

Ngày tải lên: 12/08/2014, 23:20

... alert(getDate()); // Returns Wed Sep 26 20 07 20:11:02 GMT- 070 0 (PDT) alert(getDateCaps()); // Returns WED SEP 26 20 07 20:11:02 GMT- 070 0 (PDT) 908Xch12.qxd 11/15/ 07 11:02 AM Page 173 CHAPTER 12 ■ THE DECORATOR ... way uses the factory and is coupled to only one class, the factory itself: 171 908Xch12.qxd 172 11/15/ 07 11:02 AM Page 172 CHAPTER 12 ■ THE DECORATOR PATTERN var var { {...

Ngày tải lên: 12/08/2014, 23:20

... 'none'; } }; 187 908Xch13.qxd 188 11/15/07 11:04 AM Page 188 CHAPTER 13 ■ THE FLYWEIGHT PATTERN In the constructor, attach event listeners to the mouseover and mouseout events There is a problem here: ... 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 J...

Ngày tải lên: 12/08/2014, 23:20

... subject The protection proxy controls which clients can access methods of the real subject It is impossible to implement in JavaScript and was ignored in this chapter The remote proxy controls ... unneeded complexity and code into your project A proxy is completely interchangeable with the real subject, so if there isn’t a compelling reason to have the proxy around, it would be much simpler...

Ngày tải lên: 12/08/2014, 23:20

... functions, 110 privileged methods, 34, 110 programming styles, protection proxies, 200 prototypal inheritance, 41, 45–49 vs classical, 49 edit-in-place field using, 55–58 use of, 62 prototype attribute, ... 227–230 IS-A relationships, 128 isHighLatency method, 104 _isInitialized method, 211–212 isOffline method, 104 J JavaScript design patterns, 9 10 emulating interfaces in, 14–18 e...

Ngày tải lên: 12/08/2014, 23:20

... Learning JavaScript Design Patterns Addy Osmani Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Learning JavaScript Design Patterns by Addy Osmani Copyright ... these patterns in more detail in the section ‘Categories of Design Patterns In this book, we will take a look at a number of popular JavaScript design patterns and explore why certain patterns .....

Ngày tải lên: 12/02/2014, 12:20