28 docs tagged with "design patterns"

The abstract factory pattern is a creational design pattern that produces families of related objects without specifying their concrete classes.

Adapter is a structural design pattern that facilitates the collaboration of objects having conflicting interfaces.

The bridge pattern is a structural pattern used in web development to decouple an abstraction from its implementation so that the two can vary independently.

It lets you build complex objects step by step. The builder pattern allows you to produce different object types and representations using the same builder code.

The chain of responsibility pattern allows a client request to be received by multiple objects. JavaScript Frontend Phone Interview Question

Command Pattern is a behavioral JS design pattern that aims to encapsulate actions or operations as objects. JavaScript Frontend Phone Interview Questions

The composite is a structural pattern that composes objects into trees and then works with these structures as if they were individual objects.

The constructor pattern is a class or function-based pattern used in the creation of specific types of objects. JavaScript interview questions and answers.

The decorator pattern is a JS structural pattern that promotes code reusability. They, like Mixins, can be viewed as a replacement for object sub-classing.

Pattern-ity Testing, Proto-Patterns & The Rule Of Three - A pattern that has not yet passed "pattern"-ity tests is called a proto-pattern.

The Façade design pattern creates an interface that protects clients from complex functionality in one or more subsystems.

The factory pattern offers an interface for producing objects in a superclass while allowing subclasses to change the type of objects created.

Can you explain the flyweight design pattern? The Flyweight pattern gets classified as a Structural design pattern. JavaScript interview questions.

The interpreter pattern offers a scripting language that allows end users (developers) to customize their solutions.

A design pattern is reusable code that acts as a solution to recurring problems. The three groups are creational, structural, and behavioral design patterns.

An iterator is a behavioral design pattern that allows you to traverse elements of a collection without revealing its underlying representation.

The mediator pattern is a structural pattern that enables one item to alert another group of objects when an event or action occurs. Interview Questions

The memento pattern is a behavioral pattern that allows you to save and restore an object's previous state without revealing its implementation details.

Another popular JavaScript design pattern for keeping our code tidy, segregated, and organized is the Module Pattern.

The observer pattern allows you to define a subscription mechanism that will notify multiple objects about any events on the object we attempt to observe.

The prototype is a creational design pattern that allows you to replicate existing objects without relying on their classes. Interview Questions and Answers

A proxy is a structural pattern that lets you provide a substitute for another object. The Proxy Pattern acts as a placeholder for another object.

Singleton is a creational design pattern that lets you ensure that a class has only one instance, while providing a global access point to this instance.

State is a behavioral design pattern that lets an object alter its behavior when its internal state changes. It appears as if the object changed its class.

The strategy is a behavioral pattern that allows an object to shift its way of responding to changes in its internal state.

The Template Method pattern recommends breaking down an algorithm into a series of steps and then turning these steps into methods.

A visitor pattern is a behavioral pattern that enables you to decouple algorithms from the objects on which they operate.

A design pattern is reusable code that acts as a solution to recurring problems in JavaScript. A design pattern can be a template for solving a problem.