Limitations of JavaScript

JavaScript is a lightweight, interpreted programming language. It is designed for creating network-centric applications. It is complementary to and integrated with Java. It is very easy to implement because it is integrated with HTML. It is open and cross-platform.

Limitations

We cannot treat JavaScript as a full-fledged programming language. It lacks the following important features:

• Client-side JavaScript does not allow the reading or writing of files. It has been kept for security reasons.
• JavaScript could not used for networking applications because there is no such support available.
• JavaScript doesn't have any multithreading or multiprocessor capabilities. 
• JavaScript is primarily single-threaded, meaning it can execute only one operation at a time within the main thread.
• Different web browsers (Chrome, Firefox, Edge, Safari) implement JavaScript engines differently, leading to inconsistencies in how JavaScript code is executed.
• Unlike compiled languages such as C++ or Rust, JavaScript is an interpreted language, which generally makes it slower.