How to stop /#/ in browser with react-router?

For the versions 1, 2 and 3 of react-router, the correct way to set the route to URL mapping scheme is by passing a history implementation into the history parameter of <Router>. From the histories documentation:

In a nutshell, a history knows how to listen to the browser's address bar for changes and parses the URL into a location object that the router can use to match routes and render the correct set of components.

Versions 2 and 3

In react-router 2 and 3, your route configuration code will look something like this:

import { browserHistory } from 'react-router'
ReactDOM.render (( 
 <Router history={browserHistory} >
   ...
 </Router> 
), document.body);

Version 1

In version 1.x, you will instead use the following:

import createBrowserHistory from 'history/lib/createBrowserHistory'
ReactDOM.render (( 
  <Router history={createBrowserHistory()} >
   ...
  </Router> 
), document.body);

Source: Version 2.0 Upgrade Guide

Version 4

For the upcoming version 4 of react-router, the syntax has changed a great deal and it is required is to use BrowserRouter as the router root tag.

import BrowserRouter from 'react-router/BrowserRouter'
ReactDOM.render (( 
  <BrowserRouter>
   ...
 <BrowserRouter> 
), document.body);

Source React Router Version 4 Docs

Router.run(routes, Router.HistoryLocation, function (Handler) {
  React.render(<Handler/>, document.body);
});

For the current version 0.11 and forward, you need to add Router.HistoryLocation to Router.run(). <Routes> are now deprecated. See the Upgrade Guide for the 0.12.x HistoryLocation implementation.