Test your front-end against a real API
A hosted REST-API ready to respond to your AJAX requests
When you reference a .js framework or library from your ASP.NET application, it makes sense to use the development version when you’re working on your own machine.
Referencing the development versions brings more useful error messages and integration with the React Developer tools.
But, you wouldn’t want to use these in production for performance reasons.
When you run the site in production, you’d want to reference the minified production versions of the React scripts.
Source: Introducing Vue.js | DotNetCurry
Also see: “VueJS vs Angular vs ReactJS with Demos”: