In general JavaScript is running code in a non-blocking way. This means that code which is is taking some time to finish (like accessing an API, reading content from the local file system etc.) is being executed in the background and in parallel the code execution is continued. This behaviour is being described by term asynchronous programming.
In the last part we've connected the first pieces of the React front-end application to the back-end. However, some pieces are still missing. In this last part of this tutorial series we're going to further complete our front-end application so that the user will also be able to edit todo items and set todo items to completed.
In this part we're now ready to return to the React front-end application (which we've started to implemented in the first part).
This is the second part of the The _MERN Stack Tutorial - Building A React CRUD Application From Start To Finish_ series. In the first part we've started to implement the front-end React application of the MERN stack todo application. In this second part we'll be focusing on the back-end and build a server by using Node.js and Express.
In this tutorial series we're going to explore the MERN stack by building a real-world application from start to finish.