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.

Three Ways to Define Functions in JavaScript

Functions are one of the key components in programming. They are defined to perform a specific task and can be called again and again to execute that task. The main difference between functions in JavaScript and other programming languages is that in JavaScript, functions are first-class objects, which means that they behave like objects and can be assigned to variables, arrays, and other objects.

This post discusses three different ways to define functions: