Java Script is a programming scripting languages which is used on the Web. The main basic idea of Java Script is used to enhance HTML pages and is commonly found embedded in HTML code. It is an interpreted language which no need to be compiled. Java Script pages are interact with an events, exhibit special effects, accept variable text, validate data, create cookies, detect a user’s browser, etc. Java Script works with HTML pages and developer needs to know HTML to harness this scripting language’s full potential. There are two ways to use Java Script in an HTML file. The first one involves embedding all the Java Script code in the HTML code and the second method makes use of a separate Java Script file that’s called from within a Script element.