What is the javascript code?

javascript is a programming language that is used to make web pages interactive.it runs on your visitor's computer and so does not require constant download from your website.

Javascript is not similar with HMTL javascript is different.. here's a full description from wikipedia. JavaScript is an object-oriented scripting language used to enable programmatic access to objects within both the client application and other applications. It is primarily used in the form of client-side JavaScript, implemented as an integrated component of the web browser, allowing the development of enhanced user interfaces and dynamic websites. JavaScript is a dialect of the ECMAScript standard and is characterized as a dynamic, weakly typed, prototype-based language with first-class functions. JavaScript was influenced by many languages and was designed to look like Java, but to be easier for non-programmers to work with