They're forms that submit stuff to a server and get a response
What kind of response? Asuming no React,
a. json
b. SSR-html?
If,
a. Now you've got to process that response, handle errors and finally render into html. You'll be either imperatively replacing DOM nodes, interpolating string templates or both. Probably re-binding event handlers after that.
b. You'll be merging your server-rendered html to your current view. Re-binding event handlers if you've got any interactive stuff (e.g your SSR came with a modal link) and god knows what else.
a. json
b. SSR-html?
If,
a. Now you've got to process that response, handle errors and finally render into html. You'll be either imperatively replacing DOM nodes, interpolating string templates or both. Probably re-binding event handlers after that.
b. You'll be merging your server-rendered html to your current view. Re-binding event handlers if you've got any interactive stuff (e.g your SSR came with a modal link) and god knows what else.
React is a million times better than this.