Container class in javascript

Class: Container

The Container class is a place to store Mapper instances.

Without a container, you need to manage mappers yourself, including resolving circular dependencies among relations. All mappers in a container share the same adapters, so you don’t have to add each adapter to all of your mappers.

Properties

Constructor function to use in Container#defineMapper to create a new mapper.

Defaults options to pass to Container#mapperClass when creating a new mapper.

import from 'js-data' import HttpAdapter from 'js-data-http' const adapter = new HttpAdapter() const userMapper = new Mapper(< name: 'user' >) userMapper.registerAdapter('http', adapter, < default: true >) const commentMapper = new Mapper(< name: 'comment' >) commentMapper.registerAdapter('http', adapter, < default: true >) // This might be more difficult if the mappers were defined in different // modules. userMapper.hasMany(commentMapper, < localField: 'comments', foreignKey: 'userId' >) commentMapper.belongsTo(userMapper, < localField: 'user', foreignKey: 'userId' >)

import from 'js-data' import HttpAdapter from 'js-data-http' const container = new Container() // All mappers in container share adapters container.registerAdapter('http', new HttpAdapter(), < default: true >) // These could be defined in separate modules without a problem. container.defineMapper('user', < relations: < hasMany: < comment: < localField: 'comments', foreignKey: 'userId' >> > >) container.defineMapper('comment', < relations: < belongsTo: < user: < localField: 'user', foreignKey: 'userId' >> > >)

Extends

Members

_listeners

Event listeners attached to this Component. Do not modify. Use Component#on and Component#off instead.

mapperClass

Constructor function to use in Container#defineMapper to create a new mapper.

mapperDefaults

Defaults options to pass to Container#mapperClass when creating a new Mapper.

Methods

extend( props , classProps )

Create a subclass of this Container.

Properties to add to the prototype of the subclass.

Static properties to add to the subclass.

Subclass of this Container.

Extend the class in a cross-browser manner.

import from 'js-data' const CustomContainerClass = Container.extend( < foo () < return 'bar' >>) const customContainer = new CustomContainerClass() console.log(customContainer.foo()) // "bar"

Extend the class using ES2015 class syntax.

class CustomContainerClass extends Container < foo () < return 'bar' >> const customContainer = new CustomContainerClass() console.log(customContainer.foo()) // "bar"

Источник

JS Code Example: Understanding Containers

To enhance performance, a set of objects can be cached as a single entity. To avoid confusion between elements on different layers, it is advisable to sort them by grouping foreground, game sprites, and background elements into separate containers. Essentially, this is a useful technique for managing content groups. The solution is to utilize containers, which allow easy grouping and control of objects as a single entity.

Container Class in Javascript

Your code is functioning properly, although there are some minor issues such as the absence of unique IDs for each branch. If you are content with the chosen design, you can proceed to submit the code for review on Code Review platform, where you will receive valuable suggestions for enhancing the current code.

In response to your initial theoretical inquiry, your approach is certainly a viable means of achieving your desired outcome. Specifically, you have utilized the Factory design pattern by composing a class referred to as Branches , which offers an instance of the interface for creating objects for the Branch class.

The createBranch function serves as a Factory method, responsible for both creating a new object and managing its inclusion in the array. Moreover, it provides access to the newly created object for the user to manipulate it as needed.

When implementing your code, it’s worth noting that the Branch is restricted to the Branches class, meaning it’s not visible to any external code. This has several implications to consider.

1. The sole method of producing an Branch entity is by utilizing the createBranch manufacturing facility. Additionally, please note
2. all Branch objects will be tracked because of this .
3. The class Branches is required to access any features of the Branch constructor, such as Branch.property = value , as they are not directly accessible from outside the class.

If there is no compelling reason to conceal the constructor or prototype Branch , I would recommend exploring alternative design patterns instead of resorting to hiding them.

One way to simplify your code and reduce the number of classes is by utilizing constructor properties, which eliminates the need for factory methods.

function Branch() < var _id = Math.round(Math.random() * 10); this.getId = function () < return _id; >; Branch.branches.push(this); > Branch.branches = []; Branch.getIds = function () < var ids = []; for (var i in Branch.branches) ids.push(Branch.branches[i].getId()); return ids; >; // test code for (var i = 0; i < 7; i++) < new Branch(); >console.log("Branch IDs:\n" + Branch.getIds()); 

What is a container?, A container virtualizes the underlying OS and causes the containerized app to perceive that it has the OS—including CPU, memory, file storage, and network connections—all to itself. Because the differences in underlying OS and infrastructure are abstracted, as long as the base image is consistent, the …

Create JS: Usage of «containers»

Grouping objects and controlling them as one object is made easy with containers. This simplifies the process of:

• Perform multiple transformations on a set of objects simultaneously, including moving, rotating, and scaling the container, adjusting alpha, compositeOperation, and shadow properties.
• To enhance performance, objects can be stored as a single group using container.cache(0,0,w,h) .
• To avoid confusion, arrange elements based on their type into separate containers and sort each container independently, without any concern about elements from different layers getting mixed up.

Essentially, it’s a useful method for organizing content groups. Although it’s not mandatory, it won’t significantly affect performance, making it highly advisable for intricate projects.

What does «Container» mean in the context of, Add a comment. 1. A Web application runs within a Web container of a Web server.The Web container provides the runtime environment through components that provide naming context and life cycle management. Ex. Container in case of java is the runtime environment and the implementation of …

Creating container through javascript

var maincontainer = $('#maincontainer'); var tablecontainer = $('
').appendTo(maincontainer); 

#maincontainer < background-color:black; width:500px; height:200px; >.tablecontainer

var maincontainer = $('#maincontainer'); var tablecontainer = $('
'); tablecontainer.addClass('tablecontainer'); maincontainer.append(tablecontainer); 

#maincontainer < background-color:black; width:500px; height:200px; >.tablecontainer

Successfully modified the class to id and verified the changes on this demo link: http://jsfiddle.net/7wkg4/. Additionally, the background color of the newly introduced section was changed to green for better visibility.

Containers in Bootstrap with examples, This is known as the grid system. There are two container classes in bootstrap: .container. .container-fluid. Let’s look at each of the above two classes in detail with examples: .container: The .container class provides a responsive fixed width container. In the below example, the div with class “container” will have a …

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Container Class In Javascript

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