JavaScript is a versatile and widely-used programming language primarily known for its role in web development. It was originally designed to make web pages interactive and dynamic, but its capabilities have expanded significantly. Here’s an overview of its key features and concepts:
JavaScript is an object-based scripting language which is lightweight and cross-platform.
JavaScript is not a compiled language, but it is a translated language. The JavaScript Translator (embedded in the browser) is responsible for translating the JavaScript code for the web browser.
It was introduced in the year 1995 for adding programs to the webpages in the Netscape Navigator browser.
Features of javascript
JavaScript boasts several key features that make it a versatile and powerful programming language:
Client-Side Execution: It runs on the client side (in the user’s web browser), which reduces server load and makes web pages more responsive because they can process data and update the interface without needing to reload the entire page.
Dynamic Typing: Variables in JavaScript are dynamically typed, meaning you don’t have to specify the data type of a variable when declaring it. This flexibility simplifies coding but requires careful attention to data types to avoid unexpected behaviors.
Interactivity: JavaScript allows developers to create interactive elements on web pages. This includes responding to user actions such as clicks, hovers, and keystrokes, making web pages dynamic and engaging.
Security: JavaScript’s sandboxed environment in web browsers restricts access to the user’s system, ensuring security by preventing malicious activities.
Object-Oriented: Although primarily a prototype-based object-oriented language, JavaScript supports object-oriented programming principles such as encapsulation, inheritance, and polymorphism.
