Difference between react.js and Ajax

Question

When I googled about React.js what I got is: React.js is a Framework that is used to create user interfaces. If a particular part of the website is frequently updated that means

Answer 1

To simply put, React is a JavaScript library built by Facebook. It is commonly looked as a framework because of its many extensions but the official docs label it as a library for building user interfaces. Ajax on the other hand is not a library or a framework or a language at all. Ajax is a technique used by programmers to call web APIs without having the flow of your code be interrupted at all. At the end of that day, your JavaScript code is run synchronously line by line and Ajax is run asynchronously within your synchronous code but in a way in which it will never pause your code from and have it wait for the API call to be sent and received. With Ajax, sending and receiving data is all done in the background so you won't have to worry about the delay that it takes to get that data. You can actually use Ajax in your React code. Ajax uses something called Fetch to actually call an API and you can use a variety of methods to handle the data that you receive from the API such as .then and .catch or Async/Await. You also aren't required to use Fetch at all, there are other third party ways of calling an API with Ajax such as by using Axios. I'd advise you to watch a video on how to use these different tools because when you figure out how they all work, you'll find that React and Ajax can be used together to build a great application. Hope this helped, please vote however way you felt about this answer. I'm pretty new to this website.