Programming

5 JavaScript Concepts Everyone Should Understand

Posted by Roger Carson

JavaScript is today’s most popular programming language, and it is used to develop websites and web applications. So, you may ask, why should I know JavaScript? After all, you don’t have to be a programmer to create a website or web application, right? Well, the truth is that many JavaScript programs have to be developed in stages, which can be tedious, time-consuming, and error-prone. The good news is that you can use sophisticated JavaScript libraries to save time (and money) by automating the development process.

JavaScript is one of the most important languages in web development. It is used by more websites and applications than any other language, and we want to help you understand it better. It is a programming language for developers and web developers. You can use it to create dynamic websites, mobile apps, rich internet applications (RIAs), and desktop apps. It is also a key programming language that powers the web browsers we all use every day.

JavaScript has been a popular choice for web developers for quite some time now and is one of the most versatile languages for UI and back-end development.

JavaScript can be a perplexing language for newcomers to the web, but there’s a lot more to it than you think. Due to such reasons, you might need to look for experienced web developers that are well aware of the nitty-gritty of JavaScript. This might be crucial as custom software development might require an in-depth knowledge of this language. That said, it’s not just a tool for making web pages dynamic. In fact, it’s a complex programming language, which is used in front-end web development. With that in mind, we’re going to dig into 5 key JavaScript concepts everyone should understand.

JavaScript is based on C++ and C, but it has a few unique features:

  • It has first-class functions, meaning that it’s a language that can be used for writing real applications. – It has closures, which are a way to isolate blocks of code that are part of a larger program.
  • It can be used to compose functions together, which is how we do things like making a web server or a JSON parsing engine.

Here are the 5 JavaScript concepts everyone should understand:

  • Scope

Scope is an important JavaScript concept you will need to understand when working with ES6 and beyond. If you’re a beginner, then chances are you don’t even know what scope is, but it’s a very important concept for future JavaScript programmers. Scope is the context your functions work in. This means that you can use variables in your functions and within the functions, but outside the function, you can’t.

  • Prototype

Prototypes are a very common way to test out new ideas. While you are thinking of a new app, website, or something else, you can quickly create a prototype to test it out. The goal is to think of the ultimate end result, then start building something that will achieve it while keeping things simple. Prototypes usually come in the form of mockups or wireframes, which are visual designs that show the flow and look of the template.

  • Async / Await

It’s very easy to get lost in modern JavaScript’s busy, dynamic landscape, where it’s literally impossible to keep track of all the async methods and await keywords. The language is filled with tools and techniques to help you manage complex, asynchronous code, and it’s easy to get confused about what each does and how to use them.

  • Patterns

We are all familiar with the concept of prototypal inheritance: a new class is created as a descendant of a base class and inherits all of the base class’s methods. This is useful for cases where a new class requires the functionality of a base class but may not need all of the same methods. However, what often eludes most JavaScript developers is the concept of a child class. The child class concept is a simple way of adding a new method to an existing class and inherits all of the methods of its parent class. This post will discuss this very important concept and take a look at some code in action.

  • Classes (ES6)

The new ES6 language features, like the JavaScript features introduced in the past, are often used in programming to simplify the development of web applications.

JavaScript is the quintessential language of the web. It’s the language of YouTube, Wikipedia, Gmail, Facebook, and Twitter. You’ve probably used it to make a pop-up or to play a flash game on a webpage, and you’ve probably used it to navigate around a webpage. It’s the language of the Internet, and it’s the language of the future. There are many other languages for programming, but JavaScript is the one that’s in the browser.

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