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I have been learning more and more javascript; it's a necessity at my job. We have a web application that uses a lot of javascript and I will be doing more and more every day. I have read bits and pieces about design patterns, but was wondering if someone could just give me a cut and dry example and definition. Are they something that would benefit me? Or is it more high level?
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JavaScript modules are the most prevalently used design patterns for keeping particular pieces of code independent of other components. This provides loose coupling to support well-structured code. For those that are familiar with object-oriented languages, modules are JavaScript “classes”.
Design patterns are a toolkit of tried and tested solutions to common problems in software design. Even if you never encounter these problems, knowing patterns is still useful because it teaches you how to solve all sorts of problems using principles of object-oriented design.
Design patterns are commonly defined as time-tested solutions to recurring design problems. The term refers to both the description of a solution that you can read and an instance of that solution as used to solve a particular problem.
There are three(3) types of patterns. Creational, structural, and behavioral. Creational — Addresses problems related to creating objects. Structural — Addresses the relationship between entities and how together they can compose a larger structure.
Design patterns are generic and usually elegant solutions to well-known programming problems. Without knowing what problem you're working in, I would say "Yes" they can help make your code more manageable.
This link and this link make some reference to design patterns in Javascript. They may be worth reviewing.
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One of the most practical and easy to use JavaScript-specific design pattern I've encountered is the Module Pattern, which is a modified Singleton pattern that "namespaces" related code and prevents the global scope from getting cluttered with variables and functions that might conflict with each other in a complicated page.
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