The script that changes the whole world, into simple and Fun .Yes , JAVASCRIPT. Today , we are living in a modern Era of experiencing digital aspects in everything you consume. To Travel, To Buy , To Pay , To Eat, and so on. For this, majority of consumption will either happens through an app or a web service. Have you ever thought about how's or what made this application running? If Yes, Give a thumbs, either not Do the same, lol. Well, Just Joking. Don't worry! I'm Your Friend Here, Going to explain what and How the application is build and made run. On very Basic, an application is build into two bigger parts, and usually techies will call it as Frontend and Backend. Huh! Backend is something very abstract to users. And here we comes the Frontend, here we are. The end where everyone of us becoming a consumer through this, experiencing every digital things through the User Interface [UI]. That's what Frontend role for. While getting deep inside the Frontend, we will be pushed through different parts like, HTML, CSS, JAVASCRIPT. The Hypertextmarkuplanguage[HTML] is skeleton for your application and the CascadingStylesheet [CSS] is what, how you style your application and the final one indeed my Favourite one JAVASCRIPT[JS].I always used to say Javascript is Fun and that's true. Well, Let's come to a quick and short point, about this( ps : Have a remember of this- keyword in your mind,this is one of crucial concepts here,will see later).And you've structured and styled page with HTML and CSS respectively. And you will get several clickable interfaces and buttons over there, inorder to do those actions, a skeleton must function right? If there is no Function you are considered as dead .Yes, Js entry Here. For every action there is a function have to happen, and here he/she is JavaScript. We will dig a little deep in upcoming posts. Hope you all liked this. A Heart Thanks and Always Grateful for.