JavaScript Overview (JNNC Technologies)

JavaScript is an object-based scripting language, which is very popular and used to create dynamic and interactive web pages.

• What is JavaScript?
• Where is JavaScript being Used?
• Advantages of JavaScript.
• Client and Server side Scripting.

• Where is JavaScript being Used?

  • JavaScript can Interact with HTML DOM elements and dynamically control the webpage.
  • You can perform client-side validation using Javascript.
  • Using JavaScript, you can create drop-down menus, popup windows and dialog boxes.
  • JavaScript can be used to load asynchronous data without refreshing the webpage.
  • JavaScript can be used in game development.

  Advantages of JavaScript

  • Speed: Being client-side scripting language, JavaScript is very fast since all of its code functions run immediately instead of letting it to contact the server and wait for an answer.
  • Simplicity: JavaScript is relatively easy to learn and code.
  • Versatility: JavaScript act nicely with other languages and also used in a massive variety of applications.
  • Server Load: Having in the client-side, it reduces the requirement on the website server.

  Client and Server side Scripting

  A script is a set of instructions given in the form of codes. The instructions are designed either for the Web browser (client-side scripting) or for the server (server-side scripting). Scripts provide change to a Web page.
  The client is the structure or system on which the Web browser runs. JavaScript is the major client-side scripting language for the Web. Client-side scripts gets 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 combine handling of client-server is facilitated by this single programming language.