Evolution of Angular Angular is a JavaScript based open-source framework for building client-side web applications. So, let us first understand Javascript. JavaScript runs on the client side of the web, which can be used to design or program how the web pages behave on the occurrence of an event. Typically, JavaScript is used for interface interactions, slideshows and other interactive components. JavaScript evolved quickly and has also been used for server-side programming (like in Node.js), game development, etc. JavaScript deals with the dynamic content, which is an important aspect of web development. Dynamic content refers to constantly changing content and it adapts to specific users. For example, JavaScript can be used to determine whether or not to render the mobile version of the website by checking the device, which is accessing the website. This encouraged web developers to start creating their own custom JavaScript libraries for reducing the number