Easy to learn and use
JavaScript syntax is formed from the Java programming language and is easy to learn in order to write code. Developers use JavaScript in almost every website and mobile app to create client-side scripts. Node.js has also gained significant popularity in the last decade for backend coding. Many major streaming and video platforms have been developed on Node.js.
Platform Independence
Unlike other programming languages, JavaScript can be embedded into any web page and used with many other web development mechanisms and languages. By writing something in it, you can run JavaScript code on any machine. In this way, JavaScript makes application development platform-independent.
Reducing the load on the server
You can use JavaScript to reduce server load and network congestion because it can perform logical operations and do most of the server work on the client side. For example, consider the process of filling out a registration form. The JavaScript quickly checks to see if you entered a 10-digit number for the cell phone field. If these requests were sent to the server, your page would reload with every error, making the registration process very slow and tedious.
Improving the user interface
JavaScript creates websites that make it easy to find and process complex information. Developers use JavaScript to enhance functionality and readability, as well as improve user interaction with the site.
Support for Parallelism
JavaScript can execute several different sets of instructions in parallel. On a server, Node.js can handle multiple responses to server requests while needing less bandwidth.