FWIW, Mathjax doesn't have much to do with AJAX calls. AJAX is just ubiquitous and it's easier to use without frameworks nowadays. React is a library that solv

FWIW, Mathjax doesn't have much to do with AJAX calls. AJAX is just ubiquitous and it's easier to use without frameworks nowadays. React is a library that solves different problems from the frameworks that made AJAX easier like Prototype and jQuery. React helps folk build UIs through interesting data-models and the ShadowDOM. AJAX is required by anything but the most trivial React projects to make server-side requests. Hope that helps :)