The React framework was built to solve one main problem: handling large applications with data that changes over time. This course introduces students to React, the front-end JavaScript library, and its popular accompanying package, React Router. By the end of this course, students will have built a functioning web application and compiled a series of projects into a portfolio. This course provides professionals with the skills needed to develop applications using React. We begin with basics of React, such as components, JSX, props, and state to build a basic functioning app. Then, we dive into more fundamental concepts like unidirectional flow to truly understand how React works and what else we can use it to accomplish.