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

Ajax

We are using ajax to send http requests. And we can't re-render a particular area of the page(DOM) by using ajax alone. We need jquery to re-render the page after an ajax call came up with the respond. Actually comparing jquery+HTML and React.js far better than comparing ajax and React.js.

React.js

The role of the react.js is dividing page(DOM) into small peaces(Components). ex:- Profile image area, Main Navigation, Sidebar, Textfield, Button. etc. from Big peaces to small peaces. Most importantly we can bind functionalities into these components. Ex:- Let's assume users need a popup to upload a profile image by clicking on above "Profile image area". We can write a function to open a popup. And also we can write another function to upload profile image to the database. In this way we can use ajax inside the React.js

Please follow this tutorial.