learning javascript design patterns

Design patterns for software development of the importance of self-evident, code reusable, maintainable, scalable is always the pursuit of software engineering! For me, a javascript person, it seems difficult to understand design patterns, and it may not even be used for Che

Using JavaScript for a long time, now feel that they have a certain bottleneck, reading jquery source hard, trying to write their own process-oriented special effects package into a plug-in package is not good, the framework of learning MVC design pattern is always confused, reasoning, Still feel the need to calm down to learn the

respond to a request, it will delegate the request to its own prototype16. The root object in JavaScript is the Object.prototype object, which is an empty object17. The process of creating an object with the new operator is actually just a process of cloning the Object.prototype object first and then doing some additional operations18. For the phrase "the object entrusts the request to its own prototype", the better argument is that the object delega

Design pattern for software development, its importance is self-evident, code can be reused, maintainable, extensible has always been the pursuit of software engineering! For a person who learns JavaScript, it may seem difficult to understand the design pattern, and it might not even be possible to use an FE that only transduction, with little interaction, but wh

design contains unused ingredients that are often caused by over-design1.3 If you find the above problems (defects) in the development process, then you need to use design patterns to improve the original design, that is, to reconstruct the original design. If you are the o

JavaScript uses design patterns for three main reasons: maintainability: Design patterns help to reduce the degree of coupling between modules. This makes it easy to refactor code and swap different modules, and makes it easy for programmers to collaborate on large

); for(vari=0,file,files= this. files;file=files[i++]; ) {file.scan (); } }; Folder.prototype.remove=function(){ if(! this. parent) {//the root node or the free node outside the tree return; } for(varFiles = this. parent.files,l = files.length;l>=0; l--){ varFile =files[l]; if(file = = this) {files.splice (l,1); } } }; varFile =function(name) { this. Name =name; this. Parent =NULL; }; File.prototype.add=function(){ Throw

Based on recent feedback from enthusiastic readersHere are some common design patterns to answer. For more information about how to understand the object-oriented thinking in the design pattern, please download the design pattern.Some common problems in learning

Peter Seibel, author of Practical Common Lisp, once said that if you need a pattern, there must be something wrong. The problem he mentioned is that due to the inherent defects of the language, he had to seek and summarize a general solution. Whether it is weak or strong, static or dynamic language, imperative or declarative language, each language has inherent advantages and disadvantages. A Jamaica athlete has some advantages in sprint and boxing, and lacks some in yoga practice. The magician

return New F ();}He is an encapsulation of class inheritance, in fact, the transition object is equivalent to the subclass in the class inheritance, but in the prototype as a transitional object appears, in order to create to return the new instantiated object.Of course, if you feel the need to cache the F transition, you don't have to create a new transition class F each time, and then the Object.create () method appears.varBook ={name:' JS book ', Alikebook: [' CSS book ', ' HTML book '],};va

() { var ret = _self.apply (this, arguments); Afterfn.apply (this, arguments); return ret; }; document.getElementById = Document.getElementById.before (function () { console.log (1); }); Third, avoid the pollution of the prototype var before = function (FN, beforefn) {return function () { beforefn.apply (this, arguments); Return fn.apply (this, arguments); }; var after = function (FN, AFTERFN) {return function () { var ret = fn.appl

Peter Seibel, author of Practical Common Lisp, once said that if you need a pattern, there must be something wrong. The problem he said is that because of the innate defects of language, it is necessary to seek and summarize a common solution. Either a weak type or a strong type, a static or dynamic language, an imperative or descriptive language, and each language has inherent advantages and disadvantages. A Jamaican athlete has some advantages in sprinting and even boxing, and lacks in yoga p

I. Conceptual interpretation of design patternsDesign pattern is a set of reusable, most known, categorized purposes, countless practical code design Experience of the summary. Design patterns are used to make system code reusable, extensible, decoupled, easier to understand, and to guarantee code reliability. There is

this way, after the external modification of the input data, notify the adapter data source changes, because the Observer has been registered, so Turnplateview can naturally receive notifications, and refresh the interface, and finally achieve the same effect as before:From this, in the initial learning of Android, the ListView adapter know how to use, but did not go into why so use, in fact, many places are the idea of

--Introduction to 23 design patterns in an object-oriented wayRecently read a book, recommended to Everyone "JavaScript design patterns and development practices" Turing Press, said very good!Detailed explanation of JS development commonly used in 14

", __function__);8 }9 @endMain.m1 main.m2 #import3 #import "Student.h"4 #import "LinkHome.h"5 intMainintargcConst Char*argv[]) {6 @autoreleasepool {7Student *st =[[Student alloc] init];8Linkhome *LH =[[Linkhome alloc] init];9 //students find LinkhomeTenSt.Delegate=LH; One A [St Findhouse]; - } - return 0; the}Results-676544:19.689 agent design patternExercise [4151 The student wants to find a house .-£ º £19.689 Agent

In JavaScript, there is no support for abstract classes and interfaces. JavaScript itself is also a weakly typed language. JavaScript does not have the ability or need to do more in terms of encapsulation types. For JavaScript design pattern implementations, the distinction

Read the JavaScript design patterns and development practice today and have long been eager to learn about design patterns. The design pattern is defined as a simple and elegant solution to a particular problem in the obj

].classname = = = "Play") { Continue; } //ignore items that are not selected if(!hrefs[i].parentnode.firstchild.checked) { Continue; } ID= Hrefs[i].href.split ('---') [1]; Hrefs[i].parentnode.id= "V" +ID; Videos.getinfo (ID); }}; Full code: https://github.com/shichuan/javascript-patterns/blob/master/design-

specific purpose, for different objects to join the new behavior.//Decorated object constructors function MacBook() { This. Cost = function() {return 997;}; This. screensize = function() {return 11.6};}//Decorator 1 function Memory(macbook) { varv = macbook.cost (); Macbook.cost = function() {returnV + the;};}//Decorator 2 function engraving(macbook) { varv = macbook.cost (); Macbook.cost = function() {returnV + $;};}//Decorator 3 function Insurance(macbook) { varv = macbook.cost (