writing maintainable javascript

There are always reasons why code is written the way it is. This is a huge waste of time. Maintainable JavaScript: Writing Readable Code - Ebook written by Nicholas C. Zakas. Continue with spaces. If it exists it returns the existing instance. The famous question (it’s rather a war though), whether spaces or tabs should be used, doesn’t matter. Moritz is a German front-end developer living in Berlin. Her mission in life is to transform technology organizations by creating a company cultures in which diverse, collaborative teams can thrive. Writing Maintainable and Reusable JavaScript It’s really easy for JavaScript files in a theme or plugin to quickly become a big, hairy mess. Rewrote a method? Download for offline reading, highlight, bookmark or take notes while you read Maintainable JavaScript: Writing Readable Code. Only when you bump the MAJOR number of your dependencies, you should look up what exactly has changed. If it’s a website, click your way through all the functionality: open modals, send forms and so on. The difference between unit testing and browser automation is, that the former tests your JavaScript code itself. Additionally, it’s not obvious what the method does. Make indentation consistent; tabs or spaces, doesn’t matter. Writing Maintainable JavaScript. There haven’t been many I started from scratch. Read reviews from world’s largest community for readers. There is no general rule for updating dependencies. It only results in you refactoring more than necessary, wasting your time, and maybe breaking things. Usually — on a very basic level — the structure is split up into third-party libraries, modules, data and an entry-point (e.g. Use common HTML5 APIs in interactive Web applications. Writing the same code more than once is not only wasteful when writing it the first time but even more so when trying to maintain it. Don’t continue with anything else before your linter is happy! Personally, I used to work with JSHint a lot, but ESLint has started to become my favorite, mainly because of its custom rules and early ES2015 support. Put your developer hat away for a moment, and be a user to see what it’s all about. v1.12.x). With the JavaScript practices in this book—including code style, programming tips, and automation—you will learn how to write maintainable code that other team … // be properly folded due to its mixed indentation. The prototype object itself is effectively used as a blueprint for creating other objects. This is useful for decoupling. Folder structures varies between projects, depending on the size and complexity. Maintainable JavaScript: Writing Readable Code - Kindle edition by Zakas, Nicholas C.. Download it once and read it on your Kindle device, PC, phones or tablets. It’s not worth it. Or, maybe it’s an old project which got picked up again. When we need to easily generate different instances of objects depending on the environment we are in, When we're working with many small objects or components that share the same properties. Is the codebase written in spaces? // The anonymous function from the .forEach() method, /** I really hope this article has helped you. Refactoring a legacy code base? Express? This article was peer reviewed by Tom Greco, Dan Prince and Yaphi Berhanu. Read up about the pattern, and ensure it’s consistent. Reading — and running — unit tests gives you a much deeper understanding than reading only code. This might not be an overly complicated method, but for someone who hasn’t written the code it might take a while to figure out what is going on. Establish unit tests and browser automation with tools like. jQuery? Take care of unit tests before you start refactoring anything else. Hence it is advised to always work on a different branch. Maybe the previous developer just didn’t have enough time to do it properly, didn’t know better, or whatever. Writing Maintainable JavaScript. Over the lifespan of Javascript, many design patterns have been made and tested by a large number of developers using javascript. The principle is splitting up all your functionality in to tiny modules. Commit regularly and after important changes. If you don’t want that, but want to keep it easier for other developers to work with your code, it’s absolutely fine to keep functions larger. With the JavaScript practices in this book-including code style, programming tips, and automation-you will learn how to Zaloguj się | Zarejestruj się Menu It took me years to really understand this and get over it. Of course, you can have different design patterns for different purposes in your project (e.g. Writing Scalable and Maintainable CSS Dmitry Sheiko. Unfortunately I won’t be able to cover all of the cases in this article, but can at least give you some general advice. A component can be a function, class or even a variable. index.js, main.js) where all your modules and logic gets initialized. Patterns that belong to this category are: Behavioral design patterns are concerned with the assignment of responsibilities between objects and how objects communicate. Jeff Vogel, the founder of indie video game developer Spiderweb Software, wrote in a post that commenting your code is of utmost importance because if you write a procedure and fail to comment it, the lack of comments will cost you time when you decide to rework it. Mastering JavaScript functional programming : in-depth guide for writing robust and maintainable JavaScript code in ES8 and beyond | Kereki, Federico | download | Z … main.js, index.js, app.js, …) where either all modules are initialized or, in the worst case, the entire business logic is located. As the author of DevOps for Dummies, she believes the biggest challenges facing developers aren’t technical, but human. Writing maintainable code can be challenging especially to newer developers, because they won’t have experience with coming back to code later or having to review somebody else’s changes. The module pattern helps us encapsulate private components and only return public APIs that have access to the private components.

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