As you are aware previously Web pages were static, offering less user interaction beyond clicking links and loading new pages. To overcome these problems JavaScript arrived, which is a lightweight client-side programming language:

  • The very first reason to learn javascript is the only programming language which actually understand by browser

  • JavaScript is a dynamically typed programming language. It is most commonly used as a part of web pages. Most popular application Like Gmail Facebook built using javascript

  • As it is a dynamically typed language it is easier to learn, and understand, it has a very short learning curve unlike other programming languages such as Java, C++, etc.

  • If you are a c, c++ or java developer then you can also learn javascript because where c,c++ and java are static typed and synchronous unlikely javascript is dynamic typed and execute in an asynchronous manner

  • If you want to make smartphone application then javascript is a great language to learn nowadays you can create mobile applications in javascript using libraries like React Native , cordova, etc. there is a most popular application like Instagram, Facebook ad manager, myntra, Uber eats, etc are built-in javascript

  • It is not limited to webpages and mobile applications. You can build your backend server in javascript using node js big organizations like Paytm use javascript for backend servers.

  • JavaScript is able to communicate with the server in the background without interrupting the user interaction taking place in the foreground which is its asynchronous property.

So if you will learn javascript only once then you can code the entire stack like the frontend, backend, and Mobile App without knowing any other language.

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