There are many programming languages. So why should we learn JavaScript? In this article, we will look at six aspects that are important when choosing a programming language, and finally, with a general argument, we will conclude that JavaScript generally performs better than other programming languages!

A: Is JavaScript available to everyone for free?

Undoubtedly JavaScript is the most open programming language! ECMAScript and its specifications are under ISO standards. JavaScript is an open source programming language and will always be free. In the future, I will tell you more about the open source nature of your service. But at the same time, I say in this article that open source is a strong reason for the increasing development of a programming language or a software or ... We know that all browsers are competing with each other, even Chrome and MozillaFireFox are fierce competitors. But the interesting thing is that all browsers give up in favor of the JavaScript language and commit together to support JavaScript.

Two: Is JavaScript beautiful?

Both yes and no! This is because if we consider a simple piece of code (as a calculator program) ‌, we come to the conclusion that JavaScript is not the pinnacle of finesse; However, it is a very flexible programming language that has a very beautiful and delicate logic core. (I mean the subtlety, the principle, and the comprehensibility of the core of JavaScript).

Three: Is JavaScript useful?

I say in one sentence. The most beautiful and best programming language in the world is useless! Unless you can write any program you want and run it on any platform with any kernel.
Any programming language that provides this feature is called a Cross Platform. In the not-so-distant past, being a cross-platform was just a program that ran on Windows, Mac, and Linux operating systems. But now we have two more interactive systems: the web and mobile phones (Android, iOS and BlackBerry).
Fortunately, with JavaScript, you can run any program on any platform with any operating system. Through Chrome Apps, PhoneGap, ReactNative, TideSDK, etc., you can target all the operating systems that just came to your mind and write programs for them in JavaScript. You can use HTML5 for graphical user interfaces. HTML5 integrates with JavaScript so you can create web applications.
JavaScript has libraries and platforms that you can use in any field you want. You can use TensorFlow.js to program in AI, image processing, neural networks, deep learning, and more.
You can use ReactNative to write both Andoird and iOS at the same time.
You can use Node.js and JSON files to communicate with the server, and you practically do not need languages ​​like PHP or ASP to discuss server-side programming (Server-Side - Back-End).
And the hundreds of libraries and frameworks that are not useful in this article.

Four: Is JavaScript fast enough?

JavaScript engines have evolved tremendously from slow translators to fast and timely compilers. JavaScript is now fast enough for most applications and of course new ideas are under development to speed up JavaScript fast enough for all remaining applications.
The asm.js subset is a subset of JavaScript that runs very fast on current engines. asm.js compiles almost 70% faster than C ++! Asm.js, for example, can be used to implement critical algorithmic components in the performance of web applications. Asm.js can also be used to transfer C ++ based games to the web operating system

Five: Is JavaScript widely used?

Widely used language has two very key advantages. First, such a language is best documented and well supported. Secondly, it is used by many programmers, which means that you will never get into trouble and have at least one correct answer to each question.
These days, JavaScript documentation, tutorials, and support come in a variety of forms. Such as books, folders, blog posts, email newsletters, forums, etc.

Six: Does JavaScript have a future?
There are several reasons why JavaScript has a good future.
First: This language is constantly evolving at a high speed
Second, there are many innovations related to JavaScript. For example, asm.js, TypeScript, ParallelJS or ...) ‌ I will talk more about libraries, frameworks and JavaScript subsets in the future.
Third: The web platform, of which JavaScript is an integral part, rapidly evolving, maturing and ingenious.
Fourth: And most importantly, JavaScript is supported by many companies and no individual, organization or company supports it.

Conclusion:

Given this, JavaScript will and will perform much, much better than many programming languages. But it certainly is not great, but at the moment it is very difficult for other programming languages ​​to beat it.