JavaScript Overview

JavaScript is considered to be one of the most famous scripting languages of all time. Please don’t confuse JavaScript with Java; we shall discuss the difference amongst them later. JavaScript, by definition, is a Scripting Language of the World Wide Web. The main usage of JavaScript is to add various Web functionalities, Web form validations, browser detections, creation of cookies and so on. JavaScript, along with VBScript, is one of the most popular scripting languages and that is why it is supported by almost all web browsers available today like Firefox, Opera or the most famous Internet Explorer.

Books. See notes, when I’ve finished adding them

JavaScript was originally designed in order to add interactivity to the Web Pages or HTML pages. Previously, the interactivity was achieved through the use of forms made in JavaScript but later JavaScript was used to add more dynamic and interactive features. JavaScript, as mentioned before, is a scripting language which falls under the category of light-weight programming languages. Using JavaScript is quite easy as the web programmer can easily embed the JavaScript code into the HTML pages. Another interesting fact about JavaScript is that it doesn’t require the user to purchase any license. Another advantage of using JavaScript is that it is already interpreted, which is the reason it is also called as an interpreted language. Interpreted language means that the JavaScript execute simply without any preliminary compilation; which is another reason why it is called as light-weight programming language.