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Top 10 Javascript Programming Patterns
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What Are Design Patterns?
Design patterns were popularized by the book "Design Patterns: Elements of Reusable Object-Oriented Software", published in 1994 by a group of four C++ engineers.
The book explores the capabilities and pitfalls of object-oriented programming, and describes 23 useful patterns that you can implement to solve common programming problems.
These patterns are not algorithms or specific implementations. They are more like ideas, opinions, and abstractions that can be useful in certain situations to solve a particular kind of problem.
The specific implementation of the patterns may vary depending on many different factors. But what's important is the concepts behind them, and how they might help us achieve a better solution for our problem.
This being said, keep in mind these patterns were thought up with OOP C++ programming in mind. When it comes to more modern languages like JavaScript or other programming paradigms, these patterns might not be equally useful and might even add unnecessary boilerplate to our code.
Nevertheless, I think it's good to know about them as general programming knowledge.
Side comment: If you're not familiar with programming paradigms or OOP, I recently wrote two articles about those topics. 😉
Anyway... Now that we've gotten the introduction out of the way, design patterns are classified into three main categories: creational, structural, and behavioral patterns. Let's briefly explore each of them. 🧐
During any language’s lifespan, many such reusable solutions are made and tested by a large number of developers from that language’s community. It is because of this combined experience of many developers that such solutions are so useful because they help us write code in an optimized way while at the same time solving the problem at hand.
The main benefits we get from design patterns are the following:
They are proven solutions: Because design patterns are often used by many developers, you can be certain that they work. And not only that, you can be certain that they were revised multiple times and optimizations were probably implemented.
They are easily reusable: Design patterns document a reusable solution which can be modified to solve multiple particular problems, as they are not tied to a specific problem.
They are expressive: Design patterns can explain a large solution quite elegantly.
They ease communication: When developers are familiar with design patterns, they can more easily communicate with one another about potential solutions to a given problem.
They prevent the need for refactoring code: If an application is written with design patterns in mind, it is often the case that you won’t need to refactor the code later on because applying the correct design pattern to a given problem is already an optimal solution.
They lower the size of the codebase: Because design patterns are usually elegant and optimal solutions, they usually require less code than other solutions.
I know you’re ready to jump in at this point, but before you learn all about design patterns in JavaScript, let’s review some basics.
A Brief History of JavaScript
JavaScript is one of the most popular programming languages for web development today. It was initially made as a sort of a “glue” for various displayed HTML elements, known as a client-side scripting language, for one of the initial web browsers. Called Netscape Navigator, it could only display static HTML at the time. As you might assume, the idea of such a scripting language led to browser wars between the big players in the browser development industry back then, such as Netscape Communications (today Mozilla), Microsoft, and others.
Each of the big players wanted to push through their own implementation of this scripting language, so Netscape made JavaScript (actually, Brendan Eich did), Microsoft made JScript, and so forth. As you can image, the differences between these implementations were great, so development for web browsers was made per-browser, with best-viewed-on stickers that came with a web page. It soon became clear that we needed a standard, a cross-browser solution which would unify the development process and simplify the creation of web pages. What they came up with is called ECMAScript.
ECMAScript is a standardized scripting language specification which all modern browsers try to support, and there are multiple implementations (you could say dialects) of ECMAScript. The most popular one is the topic of this article, JavaScript. Since its initial release, ECMAScript has standardized a lot of important things, and for those more interested in the specifics, there is a detailed list of standardized items for each version of the ECMAScript available on Wikipedia. Browser support for ECMAScript versions 6 (ES6) and higher are still incomplete and have to be transpiled to ES5 in order to be fully supported.
#jodadeveloping #shortsvideo #javascript #javascriptpattern #javascriptengineer
Design patterns were popularized by the book "Design Patterns: Elements of Reusable Object-Oriented Software", published in 1994 by a group of four C++ engineers.
The book explores the capabilities and pitfalls of object-oriented programming, and describes 23 useful patterns that you can implement to solve common programming problems.
These patterns are not algorithms or specific implementations. They are more like ideas, opinions, and abstractions that can be useful in certain situations to solve a particular kind of problem.
The specific implementation of the patterns may vary depending on many different factors. But what's important is the concepts behind them, and how they might help us achieve a better solution for our problem.
This being said, keep in mind these patterns were thought up with OOP C++ programming in mind. When it comes to more modern languages like JavaScript or other programming paradigms, these patterns might not be equally useful and might even add unnecessary boilerplate to our code.
Nevertheless, I think it's good to know about them as general programming knowledge.
Side comment: If you're not familiar with programming paradigms or OOP, I recently wrote two articles about those topics. 😉
Anyway... Now that we've gotten the introduction out of the way, design patterns are classified into three main categories: creational, structural, and behavioral patterns. Let's briefly explore each of them. 🧐
During any language’s lifespan, many such reusable solutions are made and tested by a large number of developers from that language’s community. It is because of this combined experience of many developers that such solutions are so useful because they help us write code in an optimized way while at the same time solving the problem at hand.
The main benefits we get from design patterns are the following:
They are proven solutions: Because design patterns are often used by many developers, you can be certain that they work. And not only that, you can be certain that they were revised multiple times and optimizations were probably implemented.
They are easily reusable: Design patterns document a reusable solution which can be modified to solve multiple particular problems, as they are not tied to a specific problem.
They are expressive: Design patterns can explain a large solution quite elegantly.
They ease communication: When developers are familiar with design patterns, they can more easily communicate with one another about potential solutions to a given problem.
They prevent the need for refactoring code: If an application is written with design patterns in mind, it is often the case that you won’t need to refactor the code later on because applying the correct design pattern to a given problem is already an optimal solution.
They lower the size of the codebase: Because design patterns are usually elegant and optimal solutions, they usually require less code than other solutions.
I know you’re ready to jump in at this point, but before you learn all about design patterns in JavaScript, let’s review some basics.
A Brief History of JavaScript
JavaScript is one of the most popular programming languages for web development today. It was initially made as a sort of a “glue” for various displayed HTML elements, known as a client-side scripting language, for one of the initial web browsers. Called Netscape Navigator, it could only display static HTML at the time. As you might assume, the idea of such a scripting language led to browser wars between the big players in the browser development industry back then, such as Netscape Communications (today Mozilla), Microsoft, and others.
Each of the big players wanted to push through their own implementation of this scripting language, so Netscape made JavaScript (actually, Brendan Eich did), Microsoft made JScript, and so forth. As you can image, the differences between these implementations were great, so development for web browsers was made per-browser, with best-viewed-on stickers that came with a web page. It soon became clear that we needed a standard, a cross-browser solution which would unify the development process and simplify the creation of web pages. What they came up with is called ECMAScript.
ECMAScript is a standardized scripting language specification which all modern browsers try to support, and there are multiple implementations (you could say dialects) of ECMAScript. The most popular one is the topic of this article, JavaScript. Since its initial release, ECMAScript has standardized a lot of important things, and for those more interested in the specifics, there is a detailed list of standardized items for each version of the ECMAScript available on Wikipedia. Browser support for ECMAScript versions 6 (ES6) and higher are still incomplete and have to be transpiled to ES5 in order to be fully supported.
#jodadeveloping #shortsvideo #javascript #javascriptpattern #javascriptengineer
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