JavaScript often abbreviated as JS, is a high-level, interpreted programming language. It is a language which is also characterized as dynamic, weakly typed, prototype-based and multi-paradigm.

Alongside HTML and CSS, JavaScript is one of the three core technologies of the World Wide Web. JavaScript enables interactive web pages and thus is an essential part of web applications. The vast majority of websites use it, and all major web browsers have a dedicated JavaScript engine to execute it.

As a multi-paradigm language, JavaScript supports event-driven, functional, and imperative (including object-oriented and prototype-based) programming styles. It has an API for working with text, arrays, dates, regular expressions, and basic manipulation of the DOM, but the language itself does not include any I/O, such as networking, storage, or graphics facilities, relying for these upon the host environment in which it is embedded.

Initially only implemented client-side in web browsers, JavaScript engines are now embedded in many other types of host software, including server-side in web servers and databases, and in non-web programs such as word processors and PDF software, and in runtime environments that make JavaScript available for writing mobile and desktop applications, including desktop widgets.

Although there are strong outward similarities between JavaScript and Java, including language name, syntax, and respective standard libraries, the two languages are distinct and differ greatly in design; JavaScript was influenced by programming languages such as Self and Scheme.



There are lot of advantages of using JavaScript in Web Technologies.

  1. Interpreted languages: JavaScript is an interpreted language. It requires no compilation process so no compiler is required. The browser interprets JavaScript as it HTML tags.
  2. Easy to learn: The syntax of JavaScript is very easy. Any person can learn it very easily and use it to develop dynamic and attractive websites.
  3. Easy to Debug and Test: JavaScript code is interpreted line by line. The errors are indicated along with line number. It is very easy to find error in the code, correct it and test it gain.
  4. Event-Based Programming: JavaScript is an event-based language. It means that different code segment are executed when certain event occur. For example, a code segment may execute when the user clicka button or moves a mouse over an object etc.
  5. Procedural Capabilities: JavaScript provides all capabilities of a procedural language. It provides condition checking, loops and branching facilities that can be executed in a web page.
  6. Platform Independence:JavaScript is platform independed language. Any JavaScript-enabled browser can understand and interpreted JavaScript code. Any JavaScript code is executed on different types of hardware a JavaScript program written for.



  1. Javascript Fundamentals
    • What is JavaScript? Complete Introduction with Hello World! Example
    • Javascript Variable: Declare, Assign a Value with Example
    • JavaScript Array Methods: Create with Example
    • For, While and Do While LOOP in JavaScript (with Example)
    • JavaScript Conditional Statements: IF, Else, Else IF (Example)
  2. Advance Javascript
    • Javascript Define & Call Functions with Example
    • Cookies in JavaScript: Set, Get & Delete Example
    • JavaScript DOM Tutorial with Example
    • Object Oriented JavaScript (OOJS) Tutorial with Example
    • Internal & External JavaScript: Learn with Example
    • Practical Code Examples using JavaScript
    • JavaScript Interview Questions & Answers
    • JavaScript Unit Testing Frameworks
    • Typescript vs JavaScript: What’s the Difference?
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