JavaScript is an object-based client-side scripting language that is popular and used to create dynamic and interactive web pages. Javascript is an interpreted language usually used with HTML, and programs written in JavaScript are called lightweight scripts.

Earlier, JavaScript was named LiveScript, but later, Netscape changed its name to JavaScript because its origin was from Java which was very popular at that time. JavaScript released its first look for Netscape 2.0 under the name "LiveScript" in 1995.

Where Is JavaScript Being Used?

  • JavaScript can interact with HTML DOM elements and dynamically control the webpage.
  • Client-side validation in the webpage is done using JavaScript.
  • Components such as drop-down menus, pop-up windows, dialog boxes, etc., are created using JavaScript.
  • Javascript is used to load data asynchronously without refreshing the webpage.
  • JavaScript is used extensively in the development of online games.

Advantages of JavaScript

  • Speed: JavaScript is a client-side scripting language. It is fast because all its code functions run immediately on the client machine instead of contacting the server and waiting for a response.
  • Simplicity: JavaScript is relatively easy to learn and code.
  • Versatility: JavaScript works well with other languages and is utilized in various applications.
  • Server Load: Being on the client side reduces the requirement on the website server.

What Does the Script Mean?

A script is a set of instructions given in the form of code. Instructions are designed for either the web browser (client-side scripting) or the server (server-side scripting). Scripts provide changes to the web page.

What Does Client-Side Scripting Mean?

The client is the structure or system on which the Web browser runs. JavaScript is the primary client-side scripting language for the Web. Client-side scripts get interpreted by the browser. The server is where the Web page and other content reside. The server sends pages to the user/client on request. This single programming language facilitates this combined handling of client-server.

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