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7 JavaScript Best Practices to Improve Code Quality

If you write JavaScript today, it’s worth your time staying in the know of all the updates the language has seen in the past few years. Since 2015, with the release of ES6, a new version of the ECMAScript spec has been released each year. Each iteration adds new features, new syntax, and Quality of Life improvements to the language. JavaScript engines in most browsers and Node.js quickly catch up, and it’s only fair that your code should catch up as well. That’s because with each new iteration of JavaScript comes new idioms and new ways to express your code, and many a time, these changes may make the code more maintainable for you and your collaborators.

Here are some of the latest ECMAScript features, and by induction, JavaScript and Node.js that you can make use of to write cleaner, more concise, and more readable code.

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6 Tips to Help You Write Cleaner Code in Node.js

Node.js is one of the most popular lightweight JavaScript frameworks that allow you to create powerful server-side and client-side applications. As with any other language, developers must write clean Node.js code to get the most out of this application runtime environment.

Otherwise, your team will spend too much time juggling through blocks of unreadable code with unclear variable definitions, messy syntax, and duplicate functions. This can cause too much pain, especially when a developer is tasked with maintaining someone else’s code while pushing to meet deadlines.

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Three Approximations You Should Never Use When Coding

The path travelled by the software industry since its inception and the accomplishments in scale and scope are simply astonishing: from creating a network the size of the planet, indexing the world’s information, connecting billions of people, to driving a car or flying an aircraft, or even an application such as Excel which enables 500M people to program a computer… Turing would be amazed at what can be done with computers today and how many people use one every day, if not every minute.

In this context, innovations in software engineering have been running amok, from operating systems, runtimes, programming languages, frameworks, to methodologies, infrastructure, and operations.

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Immutability in JavaScript — When and Why Should You Use It

The concept of immutability is nothing new because it’s been around for a long time in functional and object-oriented programming languages. The idea wasn’t much prevalent in JavaScript, but it has slowly grown into the programming community recently. React is a strong proponent of keeping the state immutable and Facebook has contributed a library called Immutable.js to help this cause.

In this tutorial, we’ll answer the following questions:

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Seven Essential JavaScript Functions

As a developer, you might know how important JavaScript has become. Right now, it is the most popular and commonly used programming language in the world. It is used to program desktop and server programs, webpages, web applications, mobile applications, etc. It is also used for databases like MongoDB and CouchDB.

JavaScript has come a long way since its inception. Earlier, developers were aware of only a few functions for all types of features and functionalities because every browser implemented the features according to their rendering engines, which made manual testing of web applications across browsers complicated. But, now you can automate the cross-browser testing of JavaScript web applications with the help of online Selenium Grid without writing repetitive code.