Proxy Pattern

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The Proxy pattern uses one object as the interface for another object It sits between users or clients of the object and the object itself client makes request to proxy, proxy makes request to...

Composite Pattern

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Used to treat single objects or collections of objects in the same way Compositions are used to create nested structures of nodes a node may be a single node (leaf) or a container of nodes ...

Adapter Pattern

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Used to convert one interface to another an objects interface is the method and properties exposed by the object, what we use to interact with the object useful pattern when something changes and...

Decorator Pattern

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Structural pattern used to add new functionality to existing objects using JavaScript we can extend classes whenever we want, but the decorator pattern is still used to minimize the amount of sub-classes we will...

Facade Pattern

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The facade is a simple interface that is shown to the public to hide the complexity of the underlying system they conceal the implementation It is a structural pattern that simplifies the use of...

Speech Synthesis API

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Here is a brand new addition to browser API's, the Speech Synthesis API.  It is used to make the browser read text out loud to the viewer, and can be implemented for many different...

Iterator Pattern

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Javascript itself has iteration built into the language there are a number of for and forEach methods to iterate through arrays we have the forIn loop to iterate through objects Iterator pattern is different as it doesn't...

Mediator Pattern

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Situation: If you have multiple independent modules that work in a system (parts of a web page or a user interface system) and they must be kept seperate from eachother and aren't allowed...

Chain of Responsibility Pattern

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Features a request sender and one or more request handlers that form a chain the request sender passes the request to the first handler in the chain the...

Client Case Studies