learning javascript design patterns

This blog introduces the appearance pattern (facade pattern), the appearance mode is also called the façade pattern, it is used very frequently in the development process, especially the third party SDK basically very big probability will use the appearance pattern. Through an appearance class, the whole subsystem has only one unified high-level interface, which can reduce the user's usage cost, and also block many implementation details for the user. Of course, in our development process, the a

communicate between modules, which is multi-directional, but the appearance pattern simply defines a simple interface for a module or system without adding additional functionality. The concept of other modules and appearance patterns in the system is not directly related and can be considered as unidirectional. The complete example gives a complete example:Summary broker mode is generally applied to a set of objects are well-defined but in a complex

In the process of writing JS and assembling code, using a certain design pattern can make our code more elegant and flexible. In the process of writing JS and assembling code, using a certain design pattern can make our code more elegant and flexible. The following is a brief introduction of the design pattern in these libraries, syntaxes and frameworks by combi

rejected the shortcomings of the simple factory model.But at the same time the factory method model also has some shortcomings, each time we add new products for the factory method to write a new product class, but also to introduce the abstraction layer, when the product type is very long, there will be a large number of corresponding factory objects, which will inevitably lead to complex class structure, so for the simple case, The use of the factory method model requires consideration of whe

[WPF series] basic learning-WPF design patterns overview, wpf-wpfIntroduction The "Design Pattern" is something cool for programmers to pick up, And it truly makes programer of the beginner Design Pattern intoxicated. Too many experiences tell us that "everything must be don

describe a sparrow or a magpie in the sky, it usually says, "a sparrow is flying" or "a magpie is flying". But if you want to ignore their specific types, you can also say "a bird is flying." Similarly, when the types of Duck objects and chicken objects are hidden behind the superclass animal, duck objects and chicken objects can be exchanged, which is the only way to allow the object to manifest polymorphism, and the manifestation of polymorphism is the goal of implementing many

04. Simple factory for JavaScript design patterns ---- simplefacotry The essence of the simple factory mode is that a factory class dynamically determines the product class instance to be created based on the input parameters. This article uses the native JavaScript language to simulate the

. Privileged attributes and methods:This keyword is used to create attributes and Methods. Because these methods are defined in the scope of the constructor, they can access private attributes and methods; only methods that require direct access to private members should be designed as privileged methods. Common attributes and methods:Directly link properties and methods on prototype. Private Members in the constructor cannot be accessed. privileged members can be accessed. Subclass inherits all

() { alert (this.name); }}; var person1 = new Person (), var person2 = new Person (); Person1.friends.push ("Van"); alert (person1.friends);//"Shelby,court,van" alert (person2.friends);//"Shelby,court,van" alert (person1.friends=== Person2.friends); TrueHere, the Person.prototype object has a property named friends that contains an array of strings. Then, two instances of person are created. Next, an array of person1.friends references is modified, and a string is added t

would be nice if someone could teach you how to be.PS: It's just as easy to learn Android as it is to bubble girls ...I summarize myself, only in the project,,, the real use of, you know how much power he has, so first look at the principle, recommend big talk design mode, although C # did not learn but really look very interesting, learning this book at the same time, I feel I Java Foundation is also upgr

After writing two design patterns, the feeling was not perfect, decided to retreat to practice and write down notes.Reiterate: Design patterns are useful!Here's a list of design patterns to prevent something from leaking (unfinish

JavaScript Design Patterns First chapter object-oriented JavaScriptapplication of 1.1 polymorphism in object-oriented designThe fundamental benefit of polymorphism is that you don't have to ask the object "What type you are" and then invoke an object's behavior based on the answer you get--you just invoke the behavior, and the rest of the polymorphism will take c

experience reach a certain level, and it also means to summarize a lot of good design experience, however, it may not be the case that "no teacher can do anything", or you can say that, on the basis of level and experience, it is time for the system to learn the "mode, it is helpful to learn the experts' summary and verify your own shortcomings. This series of design p