If code written in HTML is more secure and scalable. JavaScript in HTML. Javascript is made its first appearance in December 1995 to the world and it was called by the name “LiveScript”. An HTML table is represented in the DOM by the HTMLTableElement. Externe JavaScript is ideaal wanneer de code wordt toegepast en de functie wordt aangeroepen op meerdere pagina's. In my article on Understanding the Critical Rendering Path, I wrote about the effect JavaScript files have on the Critical Rendering Path. When it comes to web development there is front-end web development and back end-web development. Since HTML5 need to communicate with the server and wait for its response, it is lesser faster and hence it feels more suitable for desktop applications. A JavaScript file will have extension as .jsand it will be included in HTML files using