learning javascript design patterns

function func (title) { if (!) ( This instanceof func) { return new Func (title); } This.title = title;} Func.prototype.get = function () {return this.title;} Console.log (Obj.get ()); Factory mode: Factory mode is like real-life factories can produce a lot of similar products.function func (opt) {var obj = {id:0,title: '}return $.extend (obj,opt);} var F1 = func ({id:1,title: ' title 1 '}), var F2 = func ({id:2,title: ' Title 2 '}); Object creation mode: Objects in

Factory creates objects by providing a common interface, and we can also specify the type of object instances we want to create.Suppose you now have a car factory vehiclefactory, which supports the creation of object instances of car and truck types and now requires the creation of objects of the specified type through this factory, then we do not need to create this specified object by directly using the new operator or through other creative constructors. , we just need to inform vehiclefactor

prototype methods are added to the sub-class.Instance1.colors.push (' black '); Console.log (instance1.colors); // [' Red ', ' blue ', ' green ', ' black '] // [' Red ', ' blue ', ' green ']instance1.getname (); // CSSbook instance2.gettime (); // -Note: A subclass that wants to add a prototype method must pass a prototype object, one way to add it through the form of a point syntax, or it will be directly assigned to an object that overrides the inherited object from the parent class p

ConceptAgent, as the name implies is to help others work, gof the definition of proxy mode is as follows:Proxy mode, which provides a proxy for other objects to control access to this object.The proxy mode enables the proxy object to control references to specific objects. Proxies can be almost any object: files, resources, objects in memory, or things that are difficult to replicate.Role Remote proxy (An object that makes a local proxy for objects of different spaces) Virtual proxi

ConceptThe observer pattern, also called the Publish subscription pattern (Publish/subscribe), defines a one-to-many relationship that allows multiple observer objects to listen to a Subject object at the same time, notifying all observer objects when the state of the subject changes, so that they can automatically update themselves.Role Supports simple broadcast communication and automatically notifies all subscribed objects After page loading the target object is very easy to have

different. 2, sorting controls by functionMS provides an open source code that has been mentioned before. Finish running the following results:This demo is also exactly the one that corresponds to the MSDN documentation. In the document, the system lists the UWP 's various controls, sorted by name, and sorted by functional category. Nature is more suitable for learning by function, and it enumerates the following categories:App Bars and commandsButto

I. Classification of design PatternsIn general, design patterns fall into three broad categories:Create five types of models: Factory method mode, abstract Factory mode, singleton mode, builder mode, prototype mode.Structure mode, a total of seven kinds: Adapter mode, adorner mode, proxy mode, appearance mode, bridging mode, combined mode, enjoy the meta-mode.The

is the key of the system, which is the intermediary role in software design. Let's start with pseudocode to understand: Copy Code code as follows: The following code is pseudo code, please do not care too much about the code The app namespace is the equivalent of acting as an intermediary. var app = App | | {}; Ajax requests via the app broker App.sendrequest = function (options) { Return $.ajax ($.extend ({}, Options);

This article mainly introduces a deep understanding of the JavaScript series (25): a detailed explanation of the Singleton mode of the design mode. This article provides implementation methods of multiple Singleton modes. For more information, see Introduction Starting from this chapter, we will gradually introduce the implementation of various design

of subclasses. The decorator pattern and the composition pattern have a lot in common, they all implement a uniform interface with the wrapped object and will pass any method bar to these objects. However, the combination mode is used to organize many sub-objects into a whole, while the decorator pattern is used to add methods to the existing objects without modifying them or deriving subclasses from them. As follows:1 var m = {}; 2 m.child = {}; 3 function () {}; 4 function () {};Vi. Observer

=function(){ This. Receiver.add ();};varDelsubmenucommand=function(receiver) { This. receiver=receiver;};D ElSubMenuCommand.prototype.execute=function{ This. Receiver.del ();}Finally, the command receiver is passed into the commands object, and the order object is bound to the buttonvar refreshmenubarcommand=New Refreshmenubarcommand (MenuBar); var addsubmenucommand=New Addsubmenucommand (submenu); var delsubmenucommand=New Delsubmenucommand (submenu); SetCommand (button1, Refreshmenu

access a public variable, the name of the main object must be repeated. He doesn't like it either. When using module mode, you must switch to object literal notation to make a method public.He creates a new pattern that simply defines all of the functions and variables within the private scope and returns an anonymous object that has a pointer to a private function that he wants to show as public.Example:var revealingmodule= (function () { var privatevar= "Private", publcvar= "Hello

function MyArray () { var values=new Array (); Values.push.apply (values,arguments); // method of its own definition values.topipedstring =function () { return this . Join (' | ') ); }; return var colors= instanceof Array); Seven, the safe structure function patternThe secure constructor follows the pattern of the parasitic constructor type, but has a difference of two points: one is not to usethis, and the other is not to call the constructor with newfunctionPerson (n

Introduction to the prototype of JavaScript design patterns (Object. create and prototype), object. prototype Prototype description Note: You can use a prototype instance to copy and create new custom objects. You do not need to know the specific process of creating the original object; Process: Prototype => new ProtoExam => clone to new Object; Use the relevant

");/** The problem is: Zhao Yun actually do not know is that strategy ah, he only know to dismantle the first bag,* And do not know is backdoor this ingenious idea, how to do? It seems that this strategy model has already written out the name of the stratagem.*Wrong Backdoor, Givengreenlight, Blockenemy is just a code, you write first, second,Third, no one will say you're wrong!** The advantage of the strategy model is that it embodies the characteristics of cohesion-poly-low coupling, the disad

====================this is Mail sendthis is Sms send====================7. The above patterns need to match the characters, it is more inconvenient. You can use the abstract Factory mode toNew Provider InterfacePackage Me.ele.mytest;public interface Provider {public Sender produce ();}Added sendmailfactory and sendsmsfactory classes to implement the provider interfacePackage Me.ele.mytest;public class Sendmailfactory implements Provider {@Override p

; One } A - varcalculate =function(Func, salary) {//Higher order functions - returnfunc (salary); the }; - -Calculate (S, 20000);//Output: 80000 -Calculate (A, 10000);//Output: 30000Or use objects so that policies can relate to each other:1 varLv = {2"S":function(Salary) {3 returnSalary * 4;4 },5"A":function(Salary) {6 returnSalary * 3;7 },8"B":function(Salary) {9 returnSalary * 2;Ten } One }; A -

the complexity of some calls, but they also enhance the flexibility of iterators, and we can manually control the process or order of iterations.4. The iterator pattern can not only iterate over algebraic groups, but also iterate over the objects of some class arrays.In JavaScript, the for-in statement can be used to iterate over the properties of an ordinary literal object.5. Reverse Iterator6. Abort iterator7. Application examples8. SummaryThe iter